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TPS78925DBVR产品简介:
ICGOO电子元器件商城为您提供TPS78925DBVR由Texas Instruments设计生产,在icgoo商城现货销售,并且可以通过原厂、代理商等渠道进行代购。 TPS78925DBVR价格参考。Texas InstrumentsTPS78925DBVR封装/规格:PMIC - 稳压器 - 线性, Linear Voltage Regulator IC Positive Fixed 1 Output 2.5V 100mA SOT-23-5。您可以下载TPS78925DBVR参考资料、Datasheet数据手册功能说明书,资料中有TPS78925DBVR 详细功能的应用电路图电压和使用方法及教程。
参数 | 数值 |
产品目录 | 集成电路 (IC)半导体 |
描述 | IC REG LDO 2.5V 0.1A SOT23-5低压差稳压器 100mA 2.5V LDO |
产品分类 | |
品牌 | Texas Instruments |
产品手册 | |
产品图片 | |
rohs | 符合RoHS无铅 / 符合限制有害物质指令(RoHS)规范要求 |
产品系列 | 电源管理 IC,低压差稳压器,Texas Instruments TPS78925DBVR- |
数据手册 | |
产品型号 | TPS78925DBVR |
产品种类 | 低压差稳压器 |
供应商器件封装 | SOT-23-5 |
其它名称 | 296-8148-6 |
包装 | Digi-Reel® |
单位重量 | 13 mg |
商标 | Texas Instruments |
回动电压—最大值 | 390 mV |
安装类型 | 表面贴装 |
安装风格 | SMD/SMT |
封装 | Reel |
封装/外壳 | SC-74A,SOT-753 |
封装/箱体 | SOT-23-5 |
工作温度 | -40°C ~ 125°C |
工厂包装数量 | 3000 |
最大功率耗散 | 0.555 W |
最大工作温度 | + 125 C |
最大输入电压 | 10 V |
最小工作温度 | - 40 C |
最小输入电压 | + 2.7 V |
标准包装 | 1 |
电压-跌落(典型值) | - |
电压-输入 | 2.7 V ~ 10 V |
电压-输出 | 2.5V |
电流-输出 | 100mA |
电流-限制(最小值) | - |
稳压器拓扑 | 正,固定式 |
稳压器数 | 1 |
系列 | TPS78925 |
线路调整率 | 0.04 % / V |
负载调节 | 12 mV |
输入偏压电流—最大 | 0.017 mA |
输出电压 | 2.5 V |
输出电流 | 100 mA |
输出端数量 | 1 Output |
输出类型 | Fixed |
TPS78915, TPS78918, TPS78925, TPS78928, TPS78930 ULTRALOW-POWER LOW-NOISE 100-mA LOW-DROPOUT LINEAR REGULATORS SLVS300A – SEPTEMBER 2000 – REVISED MAY 2001 (cid:0) 100-mA Low-Dropout Regulator DBV PACKAGE (cid:0) (TOP VIEW) Available in 1.5-V, 1.8-V, 2.5-V, 2.8-V, 3.0-V (cid:0) Output Noise Typically 56 µVRMS IN 1 5 OUT (TPS78930) (cid:0) Only 17 µA Quiescent Current at 100 mA GND 2 (cid:0) 1 µA Quiescent Current in Standby Mode EN 3 4 BYPASS (cid:0) Dropout Voltage Typically 115 mV at 100 mA (TPS78930) TPS78930 (cid:0) GROUND CURRENT Over Current Limitation vs (cid:0) –40°C to 125°C Operating Junction JUNCTION TEMPERATURE Temperature Range 21 (cid:0) 5-Pin SOT-23 (DBV) Package VI = 4 V 20 Co = 4.7 µF description 19 IO = 100 mA The TPS789xx family of low-dropout (LDO) A µ voltage regulators offers the benefits of – low-dropout voltage, ultralow-power operation, ent 18 IO = 1 mA r low-output noise, and miniaturized packaging. ur These regulators feature low-dropout voltages d C 17 n and ultralow quiescent current compared to u o conventional LDO regulators. An internal resistor, Gr 16 in conjunction with an external bypass capacitor, creates a low-pass filter to reduce the noise. The 15 TPS78930 exhibits only 56 µV of output RMS voltage noise using 0.01 µF bypass and 10 µF 14 –40–25–10 5 20 35 50 65 80 95 110 125 output capacitors. Offered in a 5-terminal small outline integrated-circuit SOT-23 package, the TJ – Junction Temperature – °C TPS789xx series devices are ideal for TPS78930 micropower operations, low output noise, and OUTPUT SPECTRAL NOISE DENSITY where board space is limited. vs FREQUENCY The usual PNP pass transistor has been replaced 1200 by a PMOS pass element. Because the PMOS Hz VI = 4 V pass element behaves as a low-value resistor, the Co = 4.7 µF dropout voltage is very low, typically 115 mV at nV/ 1000 C(byp) = 0.1 µF – 100 mA of load current (TPS78930), and is y directly proportional to the load current. The nsit 800 quiescent current is ultralow (17 µA typically) and De e is stable over the entire range of output load s oi 600 current (0 mA to 100 mA). Intended for use in N portable systems such as laptops and cellular ral IO = 100 mA ct phones, the ultralow-dropout voltage feature and e 400 p ultralow-power operation result in a significant S ut increase in system battery operating life. p IO = 1 mA ut 200 O 0 100 1k 10k 100k f – Frequency – Hz Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright 2001, Texas Instruments Incorporated Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1
TPS78915, TPS78918, TPS78925, TPS78928, TPS78930 ULTRALOW-POWER LOW-NOISE 100-mA LOW-DROPOUT LINEAR REGULATORS SLVS300A – SEPTEMBER 2000 – REVISED MAY 2001 description (continued) The TPS789xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current to 1 µA typical at T = 25°C. The TPS789xx is offered in 1.5 V, 1.8 V, 2.5 V, 2.8 V, and 3.0 V. J AVAILABLE OPTIONS TJ VOLTAGE PACKAGE PART NUMBER SYMBOL 1.5 V TPS78915DBVT† TPS78915DBVR‡ PDWI 1.8 V TPS78918DBVT† TPS78918DBVR‡ PDXI –40°C to 125°C 2.5 V SSOOTT-2233 TPS78925DBVT† TPS78925DBVR‡ PDYI ((DDBBVV)) 2.8 V TPS78928DBVT† TPS78928DBVR‡ PDZI 3.0 V TPS78930DBVT† TPS78930DBVR‡ PEAI †The DBVT indicates tape and reel of 250 parts. ‡The DBVR indicates tape and reel of 3000 parts. functional block diagram TPS78915/18/25/28/30 IN OUT EN 150 k Current Limit / Thermal Vref Protection GND Bypass Terminal Functions TERMINAL II//OO DDEESSCCRRIIPPTTIIOONN NAME NO. BYPASS 4 I The external bypass capacitor, in conjunction with an internal resistor, creates a low-pass filter to further reduce regulator noise. EN 3 I Active low enable. GND 2 Regulator ground IN 1 I The IN terminal is the input to the device. OUT 5 O The OUT terminal is the regulated output of the device. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS78915, TPS78918, TPS78925, TPS78928, TPS78930 ULTRALOW-POWER LOW-NOISE 100-mA LOW-DROPOUT LINEAR REGULATORS SLVS300A – SEPTEMBER 2000 – REVISED MAY 2001 detail description The TPS789xx uses a PMOS pass element to dramatically reduce both dropout voltage and supply current over more conventional PNP-pass-element LDO designs. The PMOS pass element is a voltage-controlled device and, unlike a PNP transistor, it does not require increased drive current as output current increases. Supply current in the TPS789xx is essentially constant from no load to maximum load. The TPS789xx family of low-dropout (LDO) regulators have been optimized for use in battery-operated equipment. They feature extremely low dropout voltages, low output noise, low quiescent current (17 µA typically), and enable inputs to reduce supply currents to 1 µA when the regulators are turned off. The internal voltage reference is a key source of noise in a LDO regulator. The TPS789xx has a BYPASS pin which is connected to the voltage reference through a 150-kΩ internal resistor. The 150-kΩ internal resistor, in conjunction with an external bypass capacitor connected to the BYPASS pin, creates a low pass filter to reduce the voltage reference noise and, therefore, the noise at the regulator output. Note that the output will start up slower as the bypass capacitance increases due to the RC time constant at the bypass pin that is created by the internal 150-kΩ resistor and external capacitor. Current limiting and thermal protection prevent damage by excessive output current and/or power dissipation. The device switches into a constant-current mode at approximately 350 mA; further load reduces the output voltage instead of increasing the output current. The thermal protection shuts the regulator off if the junction temperature rises above approximately 165°C. Recovery is automatic when the junction temperature drops approximately 25°C below the high temperature trip point. The PMOS pass element includes a back gate diode that conducts reverse current when the input voltage level drops below the output voltage level. A voltage of 1.7 V or greater on the EN input will disable the TPS789xx internal circuitry, reducing the supply current to 1 µA. A voltage of less than 0.9 V on the EN input will enable the TPS789xx and will enable normal operation to resume. The EN input does not include any deliberate hysteresis, and it exhibits an actual switching threshold of approximately 1.5 V. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)(cid:0) Input voltage range(cid:1)(cid:7)(cid:5)(cid:5)(cid:4)(cid:6)(cid:8)(cid:5)(cid:3)(cid:2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 13.5 V Voltage range at EN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to V + 0.3 V I Voltage on OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Peak output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally limited ESD rating, HBM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 kV Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating virtual junction temperature range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 150°C J Storage temperature range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C stg †Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: All voltage values are with respect to network ground terminal. DISSIPATION RATING TABLE DERATING FACTOR TA ≤ 25°C TA = 70°C TA = 85°C BOARD PACKAGE RθJC RθJA ABOVE TA = 25°C POWER RATING POWER RATING POWER RATING Low K‡ DBV 65.8 °C/W 259 °C/W 3.9 mW/°C 386 mW 212 mW 154 mW High K§ DBV 65.8 °C/W 180 °C/W 5.6 mW/°C 555 mW 305 mW 222 mW ‡The JEDEC Low K (1s) board design used to derive this data was a 3 inch x 3 inch, two layer board with 2 ounce copper traces on top of the board. §The JEDEC High K (2s2p) board design used to derive this data was a 3 inch x 3 inch, multilayer board with 1 ounce internal power and ground planes and 2 ounce copper traces on top and bottom of the board. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3
TPS78915, TPS78918, TPS78925, TPS78928, TPS78930 ULTRALOW-POWER LOW-NOISE 100-mA LOW-DROPOUT LINEAR REGULATORS SLVS300A – SEPTEMBER 2000 – REVISED MAY 2001 recommended operating conditions MIN NOM MAX UNIT Input voltage, VI (see Note 2) 2.7 10 V Continuous output current, IO (see Note 3) 0 100 mA Operating junction temperature, TJ –40 125 °C NOTES: 2. To calculate the minimum input voltage for your maximum output current, use the following formula: VI(min) = VO(max) + VDO (max load) 3. Continuous output current and operating junction temperature are limited by internal protection circuitry, but it is not recommended that the device operate under conditions beyond those specified in this table for extended periods of time. electrical characteristics over recommended operating free-air temperature range, µ VI = VO(typ) + 1 V, IO = 1 mA, EN = 0 V, Co = 4.7 F (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT TJ = 25°C, 2.7 V < VI < 10 V 1.5 TTPPSS7788991155 TJ = –40°C to 125°C, 2.7 V < VI < 10 V 1.455 1.545 TJ = 25°C, 2.8 V < VI < 10 V 1.8 TTPPSS7788991188 TJ = –40°C to 125°C, 2.8 V < VI < 10 V 1.746 1.854 TJ = 25°C, 3.5 V < VI < 10 V 2.5 OOuuttppuutt vvoollttaaggee ((sseeee NNoottee 44)) TTPPSS7788992255 VV TJ = –40°C to 125°C, 3.5 V < VI < 10 V 2.425 2.575 TJ = 25°C, 3.8 V < VI < 10 V 2.8 TTPPSS7788992288 TJ = –40°C to 125°C, 3.8 V < VI < 10 V 2.716 2.884 TJ = 25°C, 4.0 V < VI < 10 V 3 TTPPSS7788993300 TJ = –40°C to 125°C, 4.0 V < VI < 10 V 2.910 3.090 EN = 0 V, 10 µA < IO < 100 mA, 17 TJ = 25°C QQuuiieesscceenntt ccuurrrreenntt ((GGNNDD ccuurrrreenntt)) ((sseeee NNootteess 44 aanndd 55)) µµAA EN = 0 V, IO = 100 mA, 28 TJ = –40°C to 125°C EN = 0 V, IO = See Note 4 Load regulation 12 mV TJ = 25°C VO + 1 V < VI ≤ 10 V, TJ = 25°C, 0.04 See Note 4 OOuuttppuutt vvoollttaaggee lliinnee rreegguullaattiioonn ((∆∆VVOO//VVOO)) ((sseeee NNoottee 55)) %%//VV VO + 1 V < VI ≤ 10 V, 0.1 TJ = –40°C to 125°C, See Note 4 Output noise voltage (TPS78930) BCWo = = 1 300 µ0F H, z tIoO 5 =0 1k0H0z m, CA(,b y pT)J = = 0 2.051°C µF 56 µVRMS Output current limit VO = 0 V, See Note 4 350 750 mA EN = VI, 2.7 < VI < 10 V 1 µA SSttaannddbbyy ccuurrrreenntt TJ = –40°C to 125°C 2 µA NOTES: 4. The minimum IN operating voltage is 2.7 V or VO(typ) + 1 V, whichever is greater. The maximum IN voltage is 10 V. The minimum output current is 10 µA and the maximum output current is 100 mA. 5. If VO≤ 1.8 V then VImin = 2.7 V, VImax = 10 V: VO(cid:5)VImax(cid:2)2.7 V(cid:6) Line Reg. (mV) (cid:3) (cid:5)%(cid:4)V(cid:6) (cid:0) 100 (cid:0)1000 If VO ≥ 2.5 V then VImin = VO + 1 V, VImax = 10 V: VO(cid:5)VImax(cid:2)(cid:5)VO(cid:1)1 V(cid:6)(cid:6) Line Reg. (mV) (cid:3) (cid:5)%(cid:4)V(cid:6) (cid:0) 100 (cid:0)1000 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS78915, TPS78918, TPS78925, TPS78928, TPS78930 ULTRALOW-POWER LOW-NOISE 100-mA LOW-DROPOUT LINEAR REGULATORS SLVS300A – SEPTEMBER 2000 – REVISED MAY 2001 electrical characteristics over recommended operating free-air temperature range, µ VI = VO(typ) + 1 V, IO = 1 mA, EN = 0 V, Co = 4.7 F (unless otherwise noted) (continued) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT High level enable input voltage 2.7 V < VI < 10 V 1.7 V Low level enable input voltage 2.7 V < VI < 10 V 0.9 V f = 1 kHz, Co = 10 µF, Power supply ripple rejection (TPS78930) 85 dB TJ = 25°C, C(byp) = 0.01 µF EN = 0 V –1 0 1 µA IInnppuutt ccuurrrreenntt ((EENN)) EN = VI –1 1 µA IO = 50 mA, TJ = 25°C 60 IO = 50 mA, TJ = –40°C to 125°C 125 TTPPSS7788992288 IO = 100 mA, TJ = 25°C 122 IO = 100 mA, TJ = –40°C to 125°C 245 DDrrooppoouutt vvoollttaaggee ((sseeee NNoottee 66)) mmVV IO = 50 mA, TJ = 25°C 57 IO = 50 mA, TJ = –40°C to 125°C 115 TTPPSS7788993300 IO = 100 mA, TJ = 25°C 115 IO = 100 mA, TJ = –40°C to 125°C 230 NOTE 6. IN voltage equals VO(typ) – 100 mV; The TPS78930 output voltage is set to 2.9 V. The TPS78915, TPS78918, and TPS78925 dropout voltage is limited by the input voltage range limitations. TYPICAL CHARACTERISTICS Table of Graphs FIGURE vs Output current 1, 2, 3 VVOO OOuuttppuutt vvoollttaaggee vs Junction temperature 4, 5, 6 Ground current vs Junction temperature 7 Output spectral noise density vs Frequency 8 – 10 Root mean squared output noise vs Bypass capacitance 11 Zo Output impedance vs Frequency 12 VDO Dropout voltage vs Junction temperature 13 Ripple rejection vs Frequency 14 – 16 VO Output voltage, enable voltage vs Time (start-up) 17 – 19 Line transient response 20, 22 Load transient response 21, 23 Equivalent series resistance (ESR) vs Output current 24, 25 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5
TPS78915, TPS78918, TPS78925, TPS78928, TPS78930 ULTRALOW-POWER LOW-NOISE 100-mA LOW-DROPOUT LINEAR REGULATORS SLVS300A – SEPTEMBER 2000 – REVISED MAY 2001 TYPICAL CHARACTERISTICS TPS78925 TPS78915 OUTPUT VOLTAGE OUTPUT VOLTAGE vs vs OUTPUT CURRENT OUTPUT CURRENT 2.515 1.515 2.510 TVCJIo = == 3 24.55.7° V CµF 1.510 TVCJIo = == 2 24.57.7° V CµF – V 2.505 – V 1.505 e e g g a a Volt 2.500 Volt 1.500 ut ut p p ut ut O 2.495 O 1.495 – – O O V V 2.490 1.490 2.485 1.485 0 20 40 60 80 100 0 20 40 60 80 100 IO – Output Current – mA IO – Output Current – mA Figure 1 Figure 2 TPS78930 TPS78915 OUTPUT VOLTAGE OUTPUT VOLTAGE vs vs OUTPUT CURRENT JUNCTION TEMPERATURE 3.015 1.515 VI = 4.0 V VI = 2.7 V Co = 4.7 µF Co = 4.7 µF 3.010 TJ = 25°C 1.510 IO = 1 mA V V – 3.005 – 1.505 e e g g a a olt olt V 3.000 V 1.500 ut ut p p ut ut – O 2.995 – O 1.495 O VO IO = 100 mA V 2.990 1.490 2.985 1.480 0 20 40 60 80 100 –40 –25 –10 5 20 35 50 65 80 95 110 125 IO – Output Current – mA TJ – Junction Temperature – °C Figure 3 Figure 4 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS78915, TPS78918, TPS78925, TPS78928, TPS78930 ULTRALOW-POWER LOW-NOISE 100-mA LOW-DROPOUT LINEAR REGULATORS SLVS300A – SEPTEMBER 2000 – REVISED MAY 2001 TYPICAL CHARACTERISTICS TPS78925 TPS78930 OUTPUT VOLTAGE OUTPUT VOLTAGE vs vs JUNCTION TEMPERATURE JUNCTION TEMPERATURE 2.515 3.015 VI = 3.5 V VI = 4 V Co = 4.7 µF Co = 4.7 µF 2.510 3.010 IO = 1 mA – V 2.505 – V 3.005 e e IO = 1 mA g g a a olt olt V 2.500 V 3.000 ut ut p p ut IO = 100 mA ut IO = 100 mA – O 2.495 – O 2.995 O O V V 2.490 2.990 2.485 2.985 –40 –25 –10 5 20 35 50 65 80 95 110 125 –40 –25 –10 5 20 35 50 65 80 95 110 125 TJ – Junction Temperature – °C TJ – Junction Temperature – °C Figure 5 Figure 6 TPS78930 TPS78930 GROUND CURRENT OUTPUT SPECTRAL NOISE DENSITY vs vs JUNCTION TEMPERATURE FREQUENCY 21 1200 VI = 4 V Hz VI = 4 V 20 Co = 4.7 µF V/ 1000 CC(ob =y p4). 7= µ0F.1 µF n µA 19 IO = 100 mA sity – 800 – n nt 18 IO = 1 mA De nd Curre 17 al Noise 600 IO = 100 mA rou ectr 400 G 16 p S put IO = 1 mA 15 ut 200 O 14 0 –40 –25 –10 5 20 35 50 65 80 95 110 125 100 1k 10k 100k TJ – Junction Temperature – °C f – Frequency – Hz Figure 7 Figure 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7
TPS78915, TPS78918, TPS78925, TPS78928, TPS78930 ULTRALOW-POWER LOW-NOISE 100-mA LOW-DROPOUT LINEAR REGULATORS SLVS300A – SEPTEMBER 2000 – REVISED MAY 2001 TYPICAL CHARACTERISTICS TPS78930 TPS78930 OUTPUT SPECTRAL NOISE DENSITY OUTPUT SPECTRAL NOISE DENSITY vs vs FREQUENCY FREQUENCY 800 2 Hz 700 VCIo = = 4 1 V0 µF Hz 1.8 VIOI == 41 0V0 mA V/ C(byp) = 0.1 µF V/ 1.6 Co= 10 µF n 600 µ – – y y 1.4 ensit 500 ensit 1.2 C(byp) = 0.001 µF D D e e ois 400 ois 1 C(byp) = 0.01 µF ctral N 300 IO = 100 mA ctral N 0.8 pe pe 0.6 S 200 IO = 1 mA S put put 0.4 Out 100 Out 0.2 VI = 4.3 V C(byp) = 0.1 µF 0 0 100 1k 10k 100k 100 1k 10k 100k f – Frequency – Hz f – Frequency – Hz Figure 9 Figure 10 ROOT MEAN SQUARED OUTPUT NOISE OUTPUT IMPEDANCE vs vs BYPASS CAPACITANCE FREQUENCY S) 300 2 RM VI = 4 V V( 1.8 Co = 4.7 µF µ 250 – 1.6 e s Ω ut Noi 200 nce – 1.4 p a 1.2 d Out 150 mped 1 are ut I Squ 100 VO = 3 V utp 0.8 ean – Oo 0.6 IO = 1 mA M Z ot 50 0.4 Ro IO = 100 mA S – VO = 1.5 V 0.2 M 0 0 R 0.00001 0.0001 0.001 0.01 0.1 1 10 100 1 k 10 k 100 k 1 M C(bypass) – Bypass Capacitance – µF f – Frequency – Hz Figure 11 Figure 12 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS78915, TPS78918, TPS78925, TPS78928, TPS78930 ULTRALOW-POWER LOW-NOISE 100-mA LOW-DROPOUT LINEAR REGULATORS SLVS300A – SEPTEMBER 2000 – REVISED MAY 2001 TYPICAL CHARACTERISTICS TPS78930 TPS78930 DROPOUT VOLTAGE RIPPLE REJECTION vs vs JUNCTION TEMPERATURE FREQUENCY 135 120 125 VCIo = = 2 4.9.7 V µ,F IO = 100 mA 110 VCIo = = 4 1 V0 µF 115 C(byp) = 0.1 µF 100 V 105 m age – 8955 n – dB 9800 IO = 1 mA Volt 75 ctio out 65 Reje 70 Drop 55 pple 60 – O 45 Ri 50 D V 35 40 IO = 100 mA 25 15 IO = 1 mA 30 5 20 –40 –25 –10 5 20 35 50 65 80 95 110 125 10 100 1 k 10 k 100 k 1 M TJ – Junction Temperature – °C f – Frequency – Hz Figure 13 Figure 14 TPS78930 TPS78930 RIPPLE REJECTION RIPPLE REJECTION vs vs FREQUENCY FREQUENCY 100 120 VI = 4 V 90 IO = 1 mA 110 Co = 10 µF C(byp) = 0.001 µF 80 100 B 70 B 90 d d – – IO = 1 mA n 60 n 80 o o cti cti eje 50 eje 70 R R ple 40 IO = 100 mA ple 60 p p Ri 30 Ri 50 IO = 100 mA 20 VI = 4 V 40 Co = 10 µF 10 C(byp) = 0.01 µF 30 0 20 10 100 1 k 10 k 100 k 1 M 10 100 1 k 10 k 100 k 1 M f – Frequency – Hz f – Frequency – Hz Figure 15 Figure 16 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9
TPS78915, TPS78918, TPS78925, TPS78928, TPS78930 ULTRALOW-POWER LOW-NOISE 100-mA LOW-DROPOUT LINEAR REGULATORS SLVS300A – SEPTEMBER 2000 – REVISED MAY 2001 TYPICAL CHARACTERISTICS TPS78930 OUTPUT VOLTAGE, ENABLE VOLTAGE vs TIME (START-UP) V – e 5 g a olt V 0 e bl a n E 3 V – e g 2 a olt VI = 4 V put V 1 IVOO = = 1 30 0V mA ut C(byp) = 0.01 µF – OO 0 CTJo == 2150° VCCµIOF = = 4 4V.7 µF V 0 1 2 3 4 5 6 7 8 9 10 t – Time – ms Figure 17 TPS78930 TPS78930 OUTPUT VOLTAGE, ENABLE VOLTAGE OUTPUT VOLTAGE, ENABLE VOLTAGE vs vs TIME (START-UP) TIME (START-UP) V V – – e 5 e 5 g g a a olt olt e V 0 e V 0 bl bl a a En En C(byp) = 0.001 µF C(byp) = 0.1 µF 3 3 V V – – e e ag 2 ag 2 C(byp) = 0.01 µF olt VI = 4 V olt utput V 1 ICVOO(b = y= 1p 30) 0V= m0.A001 µF utput V 1 IVVOIO == = 41 3 0V 0V mA – OO 0 TCJo == 2150° CµF – OO 0 CTJo == 2150° CµF V V 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 0 10 20 30 40 50 60 70 80 90 100 t – Time – ms t – Time – ms Figure 18 Figure 19 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS78915, TPS78918, TPS78925, TPS78928, TPS78930 ULTRALOW-POWER LOW-NOISE 100-mA LOW-DROPOUT LINEAR REGULATORS SLVS300A – SEPTEMBER 2000 – REVISED MAY 2001 TYPICAL CHARACTERISTICS TPS78915 TPS78915 LINE TRANSIENT RESPONSE LOAD TRANSIENT RESPONSE V m A – m ge 20 d – 100 put Volta 0 rent Loa Out –20 Cur 0 – O V 3.7 mV – V ge – 0 Voltage 2.7 ange In ut Volta–200 – Input ICOo = = 1 40.7 m µAF – ChVO Outp–400 VCIo = = 2 1.70 VµF VI ∆ 0 20 40 60 80 100 120 140 160 180 200 0 20 40 60 80 100 120 140 160 180 200 t – Time – µs t – Time – µs Figure 20 Figure 21 TPS78930 TPS78930 LINE TRANSIENT RESPONSE LOAD TRANSIENT RESPONSE A m V ge – 5 ICOo = = 1 40.7 m µAF ent – 100 a r Volt Cur ut 4.5 ut p p n ut – I 4 O 0 VI – O I V 100 m Output Voltage – –22000 – Change InVOput Voltage – mV ––1200000 VI = 4 V – O ∆ Out Co = 4.7 µF V 0 20 40 60 80 100 120 140 160 180 200 0 20 40 60 80 100 120 140 160 180 200 t – Time – µs t – Time – µs Figure 22 Figure 23 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 11
TPS78915, TPS78918, TPS78925, TPS78928, TPS78930 ULTRALOW-POWER LOW-NOISE 100-mA LOW-DROPOUT LINEAR REGULATORS SLVS300A – SEPTEMBER 2000 – REVISED MAY 2001 TYPICAL CHARACTERISTICS TPS78930 TPS78930 TYPICAL REGIONS OF STABILITY TYPICAL REGIONS OF STABILITY EQUIVALENT SERIES RESISTANCE (ESR) EQUIVALENT SERIES RESISTANCE (ESR) vs vs OUTPUT CURRENT OUTPUT CURRENT 100 100 VIN = 4 V VIN = 4 V Ω Ω e – CVOo == 43. 7V µF e – CVOo == 130 V µF c c n n a a esist 10 Region of Instability esist 10 Region of Instability R R s s e e ri ri e e S S nt nt e e uival 1 Region of Stability uival 1 q q E E Region of Stability – – R R S S E E 0.1 0.1 0 25 50 75 100 0 25 50 75 100 IO – Output Current – mA IO – Output Current – mA Figure 24 Figure 25 12 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS78915, TPS78918, TPS78925, TPS78928, TPS78930 ULTRALOW-POWER LOW-NOISE 100-mA LOW-DROPOUT LINEAR REGULATORS SLVS300A – SEPTEMBER 2000 – REVISED MAY 2001 APPLICATION INFORMATION The TPS789xx family of low-dropout (LDO) regulators have been optimized for use in battery-operated equipment. They feature extremely low dropout voltages, low output noise, low quiescent current (17 µA typically), and enable inputs to reduce supply currents to 1 µA when the regulators are turned off. A typical application circuit is shown in Figure 26. TPS789xx 1 VI IN 4 BYPASS 5 OUT VO 1 µF 3 .01 µF EN + 4.7 µF GND 2 ESR = 0.2 Ω Figure 26. Typical Application Circuit external capacitor requirements Although not required, a 0.047-µF or larger ceramic input bypass capacitor, connected between IN and GND and located close to the TPS789xx, is recommended to improve transient response and noise rejection. A higher-value electrolytic input capacitor may be necessary if large, fast-rise-time load transients are anticipated and the device is located several inches from the power source. Like all low dropout regulators, the TPS789xx requires an output capacitor connected between OUT and GND to stabilize the internal control loop. The minimum recommended capacitance is 4.7 µF. The ESR (equivalent series resistance) of the capacitor should be between 0.2 Ω and 10 Ω. to ensure stability. Capacitor values larger than 4.7 µF are acceptable, and allow the use of smaller ESR values. Capacitances less than 4.7 µF are not recommended because they require careful selection of ESR to ensure stability. Solid tantalum electrolytic, aluminum electrolytic, and multilayer ceramic capacitors are all suitable, provided they meet the requirements described above. Most of the commercially available 4.7 µF surface-mount solid tantalum capacitors, including devices from Sprague, Kemet, and Nichico, meet the ESR requirements stated above. Multilayer ceramic capacitors may have very small equivalent series resistances and may thus require the addition of a low value series resistor to ensure stability. CAPACITOR SELECTION PART NO. MFR. VALUE MAX ESR† SIZE (H × L × W)† T494B475K016AS KEMET 4.7 µF 1.5 Ω 1.9 × 3.5 × 2.8 195D106x0016x2T SPRAGUE 10 µF 1.5 Ω 1.3 × 7.0 × 2.7 695D106x003562T SPRAGUE 10 µF 1.3 Ω 2.5 × 7.6 × 2.5 TPSC475K035R0600 AVX 4.7 µF 0.6 Ω 2.6 × 6.0 × 3.2 †Size is in mm. The ESR maximum resistance is in ohms at 100 kHz and TA = 25°C. Contact the manufacturer for the minimum ESR values. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 13
TPS78915, TPS78918, TPS78925, TPS78928, TPS78930 ULTRALOW-POWER LOW-NOISE 100-mA LOW-DROPOUT LINEAR REGULATORS SLVS300A – SEPTEMBER 2000 – REVISED MAY 2001 APPLICATION INFORMATION external capacitor requirements (continued) The external bypass capacitor, used in conjunction with an internal resistor to form a low-pass filter, should be a low ESR ceramic capacitor. For example, the TPS78930 exhibits only 56 µV of output voltage noise using RMS a 0.01 µF ceramic bypass capacitor and a10 µF ceramic output capacitors. Note that the output will start up slower as the bypass capacitance increases due to the RC time constant at the bypass pin that is created by the internal 150 kΩ resistor and external capacitor. power dissipation and junction temperature Specified regulator operation is assured to a junction temperature of 125°C; the maximum junction temperature should be restricted to 125°C under normal operating conditions. This restriction limits the power dissipation the regulator can handle in any given application. To ensure the junction temperature is within acceptable limits, calculate the maximum allowable dissipation, P , and the actual dissipation, P , which must be less than D(max) D or equal to P . D(max) The maximum-power-dissipation limit is determined using the following equation: TJmax(cid:1)TA PD(max)(cid:2) R (cid:0)JA Where: TJmax is the maximum allowable junction temperature. RθJA is the thermal resistance junction-to-ambient for the package, see the dissipation rating table. TA is the ambient temperature. The regulator dissipation is calculated using: PD(cid:2)(cid:3)VI(cid:1)VO(cid:4)(cid:0)IO Power dissipation resulting from quiescent current is negligible. Excessive power dissipation will trigger the thermal protection circuit. regulator protection The TPS789xx PMOS-pass transistor has a built-in back diode that conducts reverse current when the input voltage drops below the output voltage (e.g., during power down). Current is conducted from the output to the input and is not internally limited. If extended reverse voltage operation is anticipated, external limiting might be appropriate. The TPS789xx features internal current limiting and thermal protection. During normal operation, the TPS789xx limits output current to approximately 350 mA. When current limiting engages, the output voltage scales back linearly until the overcurrent condition ends. While current limiting is designed to prevent gross device failure, care should be taken not to exceed the power dissipation ratings of the package. If the temperature of the device exceeds approximately 165°C, thermal-protection circuitry shuts it down. Once the device has cooled down to below approximately 140°C, regulator operation resumes. 14 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS78915, TPS78918, TPS78925, TPS78928, TPS78930 ULTRALOW-POWER LOW-NOISE 100-mA LOW-DROPOUT LINEAR REGULATORS SLVS300A – SEPTEMBER 2000 – REVISED MAY 2001 MECHANICAL DATA DBV (R-PDSO-G5) PLASTIC SMALL-OUTLINE 0,50 0,95 0,20 M 0,30 5 4 0,15 NOM 1,70 3,00 1,50 2,60 1 3 Gage Plane 3,00 2,80 0,25 0°–8° 0,55 0,35 Seating Plane 1,45 0,05 MIN 0,10 0,95 4073253-4/F 10/00 NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Body dimensions do not include mold flash or protrusion. D. Falls within JEDEC MO-178 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 15
PACKAGE OPTION ADDENDUM www.ti.com 5-Feb-2007 PACKAGING INFORMATION OrderableDevice Status(1) Package Package Pins Package EcoPlan(2) Lead/BallFinish MSLPeakTemp(3) Type Drawing Qty TPS78915DBVR ACTIVE SOT-23 DBV 5 3000 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78915DBVRG4 ACTIVE SOT-23 DBV 5 3000 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78915DBVT ACTIVE SOT-23 DBV 5 250 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78915DBVTG4 ACTIVE SOT-23 DBV 5 250 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78918DBVR ACTIVE SOT-23 DBV 5 3000 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78918DBVRG4 ACTIVE SOT-23 DBV 5 3000 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78918DBVT ACTIVE SOT-23 DBV 5 250 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78918DBVTG4 ACTIVE SOT-23 DBV 5 250 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78925DBVR ACTIVE SOT-23 DBV 5 3000 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78925DBVRG4 ACTIVE SOT-23 DBV 5 3000 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78925DBVT ACTIVE SOT-23 DBV 5 250 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78925DBVTG4 ACTIVE SOT-23 DBV 5 250 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78928DBVR ACTIVE SOT-23 DBV 5 3000 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78928DBVRG4 ACTIVE SOT-23 DBV 5 3000 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78928DBVT ACTIVE SOT-23 DBV 5 250 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78928DBVTG4 ACTIVE SOT-23 DBV 5 250 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78930DBVR ACTIVE SOT-23 DBV 5 3000 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78930DBVRG4 ACTIVE SOT-23 DBV 5 3000 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78930DBVT ACTIVE SOT-23 DBV 5 250 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) TPS78930DBVTG4 ACTIVE SOT-23 DBV 5 250 Green(RoHS& CUNIPDAU Level-1-260C-UNLIM noSb/Br) (1)Themarketingstatusvaluesaredefinedasfollows: ACTIVE:Productdevicerecommendedfornewdesigns. LIFEBUY:TIhasannouncedthatthedevicewillbediscontinued,andalifetime-buyperiodisineffect. NRND:Notrecommendedfornewdesigns.Deviceisinproductiontosupportexistingcustomers,butTIdoesnotrecommendusingthispartin anewdesign. PREVIEW:Devicehasbeenannouncedbutisnotinproduction.Samplesmayormaynotbeavailable. OBSOLETE:TIhasdiscontinuedtheproductionofthedevice. (2)EcoPlan-Theplannedeco-friendlyclassification:Pb-Free(RoHS),Pb-Free(RoHSExempt),orGreen(RoHS&noSb/Br)-pleasecheck http://www.ti.com/productcontentforthelatestavailabilityinformationandadditionalproductcontentdetails. Addendum-Page1
PACKAGE OPTION ADDENDUM www.ti.com 5-Feb-2007 TBD:ThePb-Free/Greenconversionplanhasnotbeendefined. Pb-Free(RoHS):TI'sterms"Lead-Free"or"Pb-Free"meansemiconductorproductsthatarecompatiblewiththecurrentRoHSrequirements forall6substances,includingtherequirementthatleadnotexceed0.1%byweightinhomogeneousmaterials.Wheredesignedtobesoldered athightemperatures,TIPb-Freeproductsaresuitableforuseinspecifiedlead-freeprocesses. Pb-Free(RoHSExempt):ThiscomponenthasaRoHSexemptionforeither1)lead-basedflip-chipsolderbumpsusedbetweenthedieand package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible)asdefinedabove. Green(RoHS&noSb/Br):TIdefines"Green"tomeanPb-Free(RoHScompatible),andfreeofBromine(Br)andAntimony(Sb)basedflame retardants(BrorSbdonotexceed0.1%byweightinhomogeneousmaterial) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incomingmaterialsandchemicals.TIandTIsuppliersconsidercertaininformationtobeproprietary,andthusCASnumbersandotherlimited informationmaynotbeavailableforrelease. InnoeventshallTI'sliabilityarisingoutofsuchinformationexceedthetotalpurchasepriceoftheTIpart(s)atissueinthisdocumentsoldbyTI toCustomeronanannualbasis. Addendum-Page2
PACKAGE MATERIALS INFORMATION www.ti.com 11-Mar-2008 TAPE AND REEL INFORMATION *Alldimensionsarenominal Device Package Package Pins SPQ Reel Reel A0(mm) B0(mm) K0(mm) P1 W Pin1 Type Drawing Diameter Width (mm) (mm) Quadrant (mm) W1(mm) TPS78915DBVR SOT-23 DBV 5 3000 180.0 9.0 3.15 3.2 1.4 4.0 8.0 Q3 TPS78915DBVT SOT-23 DBV 5 250 180.0 9.0 3.15 3.2 1.4 4.0 8.0 Q3 TPS78918DBVR SOT-23 DBV 5 3000 180.0 9.0 3.15 3.2 1.4 4.0 8.0 Q3 TPS78918DBVT SOT-23 DBV 5 250 180.0 9.0 3.15 3.2 1.4 4.0 8.0 Q3 TPS78925DBVR SOT-23 DBV 5 3000 180.0 9.0 3.15 3.2 1.4 4.0 8.0 Q3 TPS78925DBVT SOT-23 DBV 5 250 180.0 9.0 3.15 3.2 1.4 4.0 8.0 Q3 TPS78928DBVR SOT-23 DBV 5 3000 180.0 9.0 3.15 3.2 1.4 4.0 8.0 Q3 TPS78928DBVT SOT-23 DBV 5 250 180.0 9.0 3.15 3.2 1.4 4.0 8.0 Q3 TPS78930DBVR SOT-23 DBV 5 3000 180.0 9.0 3.15 3.2 1.4 4.0 8.0 Q3 TPS78930DBVT SOT-23 DBV 5 250 180.0 9.0 3.15 3.2 1.4 4.0 8.0 Q3 PackMaterials-Page1
PACKAGE MATERIALS INFORMATION www.ti.com 11-Mar-2008 *Alldimensionsarenominal Device PackageType PackageDrawing Pins SPQ Length(mm) Width(mm) Height(mm) TPS78915DBVR SOT-23 DBV 5 3000 182.0 182.0 20.0 TPS78915DBVT SOT-23 DBV 5 250 182.0 182.0 20.0 TPS78918DBVR SOT-23 DBV 5 3000 182.0 182.0 20.0 TPS78918DBVT SOT-23 DBV 5 250 182.0 182.0 20.0 TPS78925DBVR SOT-23 DBV 5 3000 182.0 182.0 20.0 TPS78925DBVT SOT-23 DBV 5 250 182.0 182.0 20.0 TPS78928DBVR SOT-23 DBV 5 3000 182.0 182.0 20.0 TPS78928DBVT SOT-23 DBV 5 250 182.0 182.0 20.0 TPS78930DBVR SOT-23 DBV 5 3000 182.0 182.0 20.0 TPS78930DBVT SOT-23 DBV 5 250 182.0 182.0 20.0 PackMaterials-Page2
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