(cid:22) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:6)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:3)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:8)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:9)(cid:10)(cid:11)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:6)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:3)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:8)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:9)(cid:10)(cid:11) (cid:12)(cid:9)(cid:13)(cid:14) (cid:15)(cid:10)(cid:16) (cid:15)(cid:17)(cid:18)(cid:19)(cid:9)(cid:20) (cid:20)(cid:19)(cid:21)(cid:1)(cid:15)(cid:9)(cid:14)(cid:16)(cid:20) SLUS317B − JANUARY 2000 − REVISED FEBRUARY 2004 (cid:1) Fast Transient Response 5-PIN TO-220 (cid:1) 10-mA to 3-A Load Current T PACKAGE (TOP VIEW) (cid:1) Short Circuit Protection (cid:1) Maximum Dropout of 450-mV at 3-A Load Current (cid:1) Separate Bias and VIN Pins (cid:1) Available in Adjustable or Fixed-Output Voltages (cid:1) 5-Pin Package Allows Kelvin Sensing of Load Voltage 5-PIN TO-263 (cid:1) TD PACKAGE Reverse Current Protection (TOP VIEW) Note: Tab = Ground description The UC382 is a low-dropout-linear regulator providing a quick response to fast load changes. Combined with its precision onboard reference, the UC382 excels at driving GTL and BTL buses. Due to its fast response to load transients, the total capacitance required to decouple the regulator’s output can be significantly decreased when compared to standard LDO linear regulators. Dropout voltage (VIN to VOUT) is only 450 mV maximum at 100°C and 350 mV typical at 3-A load. The onboard bandgap reference is stable with temperature and scaled for a 1.2-V input to the internal-power amplifier. The UC382 is available in fixed-output voltages of 1.5 V, 2.1 V, or 2.5 V. The output voltage of the adjustable version can be set with two external resistors. If the external resistors are omitted, the output voltage defaults to 1.2 V. block diagram VB 1 R1 R2 UC382−ADJ OPEN 0 UC382−1 (1.5 V) 2 k 500 Ω UC382−2 (2.1 V) 2 k 1.5 kΩ UC382−3 (2.5 V) 2 k 2.16 kΩ THERMAL SHUTDOWN 2 VIN 1.2 V BANDGAP + REFERENCE SHORT R1 R2 CIRCUIT SENSE 3 5 4 GND ADJ VOUT UDG-00080 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. All trademarks are the property of their respective owners. (cid:23)(cid:20)(cid:16)(cid:10)(cid:1)(cid:2)(cid:14)(cid:17)(cid:16)(cid:18) (cid:10)(cid:9)(cid:14)(cid:9) (cid:24)(cid:25)(cid:26)(cid:27)(cid:28)(cid:29)(cid:30)(cid:31)(cid:24)(cid:27)(cid:25) (cid:24)! "#(cid:28)(cid:28)$(cid:25)(cid:31) (cid:30)! (cid:27)(cid:26) %#&’(cid:24)"(cid:30)(cid:31)(cid:24)(cid:27)(cid:25) ((cid:30)(cid:31)$) Copyright  2000−2004, Texas Instruments Incorporated (cid:23)(cid:28)(cid:27)(#"(cid:31)! "(cid:27)(cid:25)(cid:26)(cid:27)(cid:28)(cid:29) (cid:31)(cid:27) !%$"(cid:24)(cid:26)(cid:24)"(cid:30)(cid:31)(cid:24)(cid:27)(cid:25)! %$(cid:28) (cid:31)*$ (cid:31)$(cid:28)(cid:29)! (cid:27)(cid:26) (cid:14)$+(cid:30)! (cid:17)(cid:25)!(cid:31)(cid:28)#(cid:29)$(cid:25)(cid:31)! !(cid:31)(cid:30)(cid:25)((cid:30)(cid:28)( ,(cid:30)(cid:28)(cid:28)(cid:30)(cid:25)(cid:31)-) (cid:23)(cid:28)(cid:27)(#"(cid:31)(cid:24)(cid:27)(cid:25) %(cid:28)(cid:27)"$!!(cid:24)(cid:25). ((cid:27)$! (cid:25)(cid:27)(cid:31) (cid:25)$"$!!(cid:30)(cid:28)(cid:24)’- (cid:24)(cid:25)"’#($ (cid:31)$!(cid:31)(cid:24)(cid:25). (cid:27)(cid:26) (cid:30)’’ %(cid:30)(cid:28)(cid:30)(cid:29)$(cid:31)$(cid:28)!) POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1

(cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:6)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:3)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:8)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:9)(cid:10)(cid:11)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:6)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:3)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:8)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:9)(cid:10)(cid:11) (cid:22) (cid:12)(cid:9)(cid:13)(cid:14) (cid:15)(cid:10)(cid:16) (cid:15)(cid:17)(cid:18)(cid:19)(cid:9)(cid:20) (cid:20)(cid:19)(cid:21)(cid:1)(cid:15)(cid:9)(cid:14)(cid:16)(cid:20) SLUS317B − JANUARY 2000 − REVISED FEBRUARY 2004 absolute maximum ratings over operating free-air temperature (unless otherwise noted)†(cid:1) VB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 V VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5 V Output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 V to 6.0 V Storage temperature, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C stg Junction temperature, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 150°C J Lead temperature (soldering, 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C †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. (cid:2)Currents are positive into, negative out of the specified terminal. Consult Packaging Section of Databook for thermal limitations and considerations of packages. AVAILABLE OPTIONS(1) PACKAGED DEVICES TO-220 (T) TO−263 (TD)(2) TTJJ OUTPUT VOLTAGE OUTPUT VOLTAGE 1.5 V 2.1 V 2.5 V 1.2 V or ADJ 1.5 V 2.1 V 2.5 V 1.2 V or ADJ –40°C to 100°C 282T-1 282T-2 282T-3 282T-ADJ 282TD-1 282TD-2 282TD-3 282TD-ADJ 0°C to 100°C 382T-1 382T-2 382T-3 382T-ADJ 382TD-1 382TD-2 382TD-3 382TD-ADJ 1. For more package and ordering information, see the Package Option Addendum located at the end of this data sheet. 2. For 50 piece reel, add KTTT (e.g., UC282TDKTTT−1); for 500 piece reel, add TR (e.g., UC282TDTR−1). electrical characteristics, T = −40°C to 100°C for the UC282-X series and 0°C to 100°C for the A UC382-X, VB = 5 V, VIN = 3.3 V, VOUT = 2.5 V for the UC382-ADJ, T = T , (unless otherwise stated) A J UC382-3 fixed 2.5 V, 3-A family PARAMETERS TEST CONDITIONS MIN TYP MAX UNITS UC382-3 2.475 2.500 2.525 V OOuuttppuutt vvoollttaaggee ((IIVVOOUUTT == 110000 mmAA)) UC282-3 2.450 2.500 2.525 V Load regulation IVOUT = 10 mA to 3 A 0.5 4 mV VIN PSSR 80 100 dB VB PSSR 50 60 dB IVOUT = 3 A, TJ = 25°C 350 425 mV VVIINN ddrrooppoouutt vvoollttaaggee == VVIINN−−VVOOUUTT IVOUT = 3 A, UC382-3 350 450 mV IVOUT = 3 A, UC282-3 350 500 mV IVOUT = 3 A, UC382-3 1.8 2.10 V VVBB ddrrooppoouutt == VVBB−−VVOOUUTT IVOUT = 3 A, UC282-3 1.8 2.20 V Short circuit current limit 3.3 4.5 A IVOUT = 10 mA 6 11 mA VVBB ccuurrrreenntt IVOUT = 3 A 18 60 mA VIN current IVOUT = 3 A 2.94 2.97 A 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

(cid:22) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:6)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:3)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:8)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:9)(cid:10)(cid:11)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:6)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:3)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:8)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:9)(cid:10)(cid:11) (cid:12)(cid:9)(cid:13)(cid:14) (cid:15)(cid:10)(cid:16) (cid:15)(cid:17)(cid:18)(cid:19)(cid:9)(cid:20) (cid:20)(cid:19)(cid:21)(cid:1)(cid:15)(cid:9)(cid:14)(cid:16)(cid:20) SLUS317B − JANUARY 2000 − REVISED FEBRUARY 2004 electrical characteristics, T = −40°C to 100°C for the UC282-X series and 0°C to 100°C for the A UC382-X, VB = 5 V, VIN = 3.3 V, VOUT = 2.5 V for the UC382-ADJ, T = T , (unless otherwise stated) A J UC382-2 fixed 2.1 V, 3-A family PARAMETERS TEST CONDITIONS MIN TYP MAX UNITS UC382-2 2.079 2.100 2.121 V OOuuttppuutt vvoollttaaggee ((IIVVOOUUTT == 110000 mmAA)) UC282-2 2.058 2.100 2.121 V Load regulation IVOUT = 10 mA to 3 A 0.5 4 mV VIN PSSR 80 100 dB VB PSSR 52 62 dB IVOUT = 3 A, TJ = 25°C 350 425 mV VVIINN ddrrooppoouutt vvoollttaaggee == VVIINN−−VVOOUUTT IVOUT = 3 A, UC382-2 350 450 mV IVOUT = 3 A, UC282-2 350 500 mV IVOUT = 3 A, UC382-2 1.8 2.10 V VVBB ddrrooppoouutt == VVBB−−VVOOUUTT IVOUT = 3 A, UC282-2 1.8 2.20 V Short circuit current limit 3.3 4.5 A IVOUT = 10 mA 6 11 mA VVBB ccuurrrreenntt IVOUT = 3 A 18 60 mA VIN current IVOUT = 3 A 2.94 2.97 A UC382-1 fixed 1.5 V, 3-A family PARAMETERS TEST CONDITIONS MIN TYP MAX UNITS UC382-1 1.485 1.500 1.515 V OOuuttppuutt vvoollttaaggee ((IIVVOOUUTT == 110000 mmAA)) UC282-1 1.470 1.500 1.515 V Load regulation IVOUT = 10 mA to 3 A 0.5 4 mV VIN PSSR 80 100 dB VB PSSR 55 65 dB IVOUT = 3 A, TJ = 25°C 350 425 mV VVIINN ddrrooppoouutt vvoollttaaggee == VVIINN−−VVOOUUTT IVOUT = 3 A, UC382-1 350 450 mV IVOUT = 3 A, UC282-1 350 500 mV IVOUT = 3 A, UC382-1 1.8 2.10 V VVBB ddrrooppoouutt == VVBB−−VVOOUUTT IVOUT = 3 A, UC282-1 1.8 2.20 V Short circuit current limit 3.3 4.5 A IVOUT = 10 mA 6 11 mA VVBB ccuurrrreenntt IVOUT = 3 A 18 60 mA VIN current IVOUT = 3 A 2.94 2.97 A POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3

(cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:6)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:3)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:8)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:9)(cid:10)(cid:11)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:6)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:3)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:8)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:9)(cid:10)(cid:11) (cid:22) (cid:12)(cid:9)(cid:13)(cid:14) (cid:15)(cid:10)(cid:16) (cid:15)(cid:17)(cid:18)(cid:19)(cid:9)(cid:20) (cid:20)(cid:19)(cid:21)(cid:1)(cid:15)(cid:9)(cid:14)(cid:16)(cid:20) SLUS317B − JANUARY 2000 − REVISED FEBRUARY 2004 electrical characteristics, T = −40°C to 100°C for the UC282-X series and 0°C to 100°C for the A UC382-X, VB = 5 V, VIN = 3.3 V, VOUT = 2.5 V for the UC382-ADJ, T = T , (unless otherwise stated) A J UC382-ADJ adjustable, 3-A family PARAMETERS TEST CONDITIONS MIN TYP MAX UNITS UC382-ADJ 1.188 1.200 1.212 V AADDJJ vvoollttaaggee ((IIVVOOUUTT == 110000 mmAA)) UC282-ADJ 1.176 1.200 1.212 V Load regulation IVOUT = 10 mA to 3 A 0.5 4 mV VIN PSSR VOUT programmed for 2.5 V 80 100 dB VB PSSR VOUT programmed for 2.5 V 50 60 dB IVOUT = 3 A, TJ = 25°C 350 425 mV VVIINN ddrrooppoouutt vvoollttaaggee == VVIINN−−VVOOUUTT IVOUT = 3 A, UC382-ADJ 350 450 mV IVOUT = 3 A, UC282-ADJ 350 500 mV IVOUT = 3 A, UC382-ADJ 1.8 2.10 V VVBB ddrrooppoouutt == VVBB−−VVOOUUTT IVOUT = 3 A, UC282-ADJ 1.8 2.20 V Short circuit current limit 3.3 4.5 A IVOUT = 10 mA 6 11 mA VVBB ccuurrrreenntt IVOUT = 3 A 18 60 mA VIN current IVOUT = 3 A 2.94 2.97 A pin descriptions ADJ: In the adjustable version, the user programs the output voltage with two external resistors. The resistors should be 0.1% for high accuracy. The output amplifier is configured as a non-inverting-operational amplifier. The resistors should meet the criteria of R3 || R4 < 100 Ω. Connect ADJ to VOUT for an output voltage of 1.2 V. Note that the point at which the feedback network is connected to the output is the Kelvin sense point. For -1, -2, and -3 versions, ADJ pin is tied to VOUT to obtain specified output voltage. GND: For accurate results, the GND pin should be referenced to the load ground. VB: Supplies power to all circuits of the regulator except the collector of the output-power transistor. The 2-V headroom from VB to VOUT allows the use of a Darlington output stage for inherently-low-output impedance and fast response. (Dropout is derated for junction temperatures below 0°C.) VIN: Supplies the current to the collector of the output-power transistor only. The dropout (VIN−VOUT) is under 100 mV for light loads; maximum dropout is 450 mV at 3 A for T = 0°C to 100°C. (Dropout is derated for junction J temperatures over 100°C.) At full load, the majority of the VB current is going to the load. VOUT: This pin should be connected to the load via a low impedance path. Avoid connectors which add significant inductance and resistance. Note that even though a Kelvin sense is available through a 5-pin package, care must be taken since voltage drops along wire traces add to the dropout voltage. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

(cid:22) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:6)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:3)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:8)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:9)(cid:10)(cid:11)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:6)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:3)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:8)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:9)(cid:10)(cid:11) (cid:12)(cid:9)(cid:13)(cid:14) (cid:15)(cid:10)(cid:16) (cid:15)(cid:17)(cid:18)(cid:19)(cid:9)(cid:20) (cid:20)(cid:19)(cid:21)(cid:1)(cid:15)(cid:9)(cid:14)(cid:16)(cid:20) SLUS317B − JANUARY 2000 − REVISED FEBRUARY 2004 pin descriptions (continued) DROPOUT VOLTAGE (V − V ) DROPOUT VOLTAGE (V − V ) B OUT IN OUT vs vs LOAD CURRENT LOAD CURRENT 1.9 400 TJ = 27(cid:1)C TJ = 27(cid:1)C V V m Voltage - 1.8 Voltage - 300 Dropout Dropout - DO 1.7 - DO 200 V V 1.6 100 0 1 2 3 100 mA 1 A 2 A 3 A I − Load Current − A L IL - Load Current - A Figure 1 Figure 2 APPLICATION INFORMATION The UC382 is easy to use. The adjustable version requires two 0.1% resistors to set the output voltage. The fixed versions of the UC382 require no external resistors. All versions of the UC382 require decoupling capacitors on the input and output. In a typical application, VB and VIN are driven from switching power supplies which may have large filter capacitors at their outputs. If the UC382 is further than 12 inches from the power supply, it is recommended to add local decoupling as close as possible to the linear regulator. Decouple the output of the UC382 with at least 100 µF of high-quality tantalum or Sanyo OSCON capacitors close to the VOUT pin for maximum stability. Many applications involving Ultra-Fast GTL or BTL applications require additional capacitance close to the load. The exact amount will vary according to speed and magnitude of the load transients and the tolerance allowed for transients on VOUT. When specifying the decoupling capacitors, the series resistance of the capacitor bank is an important factor in its ability to filter load transients. The UC382 allows for Kelvin sensing the voltage at the load. This improves regulation performance and eliminates the voltage drops due to wire-trace resistance. This voltage drop must be added to the headroom (VIN to VOUT and VB to VOUT). The dropout of 450 mV is measured at the pins and does not include additional drops due to trace resistance. The minimum load current is 10 mA. Two or more UC382’s may be used in parallel. While stable, this arrangement does degrade the transient response. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5

(cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:6)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:3)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:8)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:9)(cid:10)(cid:11)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:6)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:3)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:8)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:9)(cid:10)(cid:11) (cid:22) (cid:12)(cid:9)(cid:13)(cid:14) (cid:15)(cid:10)(cid:16) (cid:15)(cid:17)(cid:18)(cid:19)(cid:9)(cid:20) (cid:20)(cid:19)(cid:21)(cid:1)(cid:15)(cid:9)(cid:14)(cid:16)(cid:20) SLUS317B − JANUARY 2000 − REVISED FEBRUARY 2004 OPEN LOOP PHASE OPEN LOOP GAIN vs vs FREQUENCY FREQUENCY 70 0 60 50 40 g B e d d n - 30 e - −90 ai as G h P 20 10 0 −10 −180 100 1 k 10 k 100 k 1 M 10 M 100 1 k 10 k 100 k 1 M 10 M f − Frequency − Hz f − Frequency − Hz Figure 3 Figure 4 POWER SUPPLY REJECTION RATIO (VB INPUT) vs B FREQUENCY d − 60 T) U P N B I 50 V o ( ati 40 R n o cti 30 e ej R y pl 20 p u S r e w 10 o P R - R 0 S P 100 1 k 10 k 100 k 1 M 10 M f − Frequency − Hz Figure 5 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

(cid:22) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:6)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:3)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:8)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:9)(cid:10)(cid:11)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:6)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:3)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:8)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:9)(cid:10)(cid:11) (cid:12)(cid:9)(cid:13)(cid:14) (cid:15)(cid:10)(cid:16) (cid:15)(cid:17)(cid:18)(cid:19)(cid:9)(cid:20) (cid:20)(cid:19)(cid:21)(cid:1)(cid:15)(cid:9)(cid:14)(cid:16)(cid:20) SLUS317B − JANUARY 2000 − REVISED FEBRUARY 2004 APPLICATION INFORMATION 5 V 1µF CER 1 V = 1.2 V IRF 3.3 V VB O 2 VIN VOUT 4 520 + + 4.7µF UC382−ADJ 100µF 121 Ω PULSE TANT TANT R1 GENERATOR ADJ 5 GND 3 UDG-00081 Figure 6. Transient Test Circuit 10 mA to 3 A/(cid:1)s Load Transient Response ∆ µ Figure 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7

(cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:6)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:3)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:8)(cid:7) (cid:1)(cid:2)(cid:3)(cid:4)(cid:3)(cid:5)(cid:9)(cid:10)(cid:11)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:6)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:3)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:8)(cid:7) (cid:1)(cid:2)(cid:8)(cid:4)(cid:3)(cid:5)(cid:9)(cid:10)(cid:11) (cid:22) (cid:12)(cid:9)(cid:13)(cid:14) (cid:15)(cid:10)(cid:16) (cid:15)(cid:17)(cid:18)(cid:19)(cid:9)(cid:20) (cid:20)(cid:19)(cid:21)(cid:1)(cid:15)(cid:9)(cid:14)(cid:16)(cid:20) SLUS317B − JANUARY 2000 − REVISED FEBRUARY 2004 APPLICATION INFORMATION +5 V +4.7µF CER KELVIN SENSE POINT 1 +3.3 V VB +1.8 V 2 VIN VOUT 4 OUTPUT +4.7µF UC382−ADJ R3 +330µF 2.2µF TANT 60 Ω OSCON CER ADJ 5 GND R4 3 120Ω UDG-00082 Figure 8. Typical UC382-ADJ Application +5 V KELVIN SENSE + 4.7µF 1 POINT VB +1.5 V 2 VIN VOUT 4 OUTPUT UC382−1 +330µF 2.2µF OSCON CER ADJ 5 GND 3 UDG-00083 Figure 9. Typical UC382-1, -2, or -3 Application 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

PACKAGE OPTION ADDENDUM www.ti.com 18-May-2004 PACKAGING INFORMATION ORDERABLEDEVICE STATUS(1) PACKAGETYPE PACKAGEDRAWING PINS PACKAGEQTY UC282T-1 ACTIVE TO/SOT KC 5 50 UC282T-2 ACTIVE TO/SOT KC 5 50 UC282T-3 ACTIVE TO/SOT KC 5 50 UC282T-ADJ ACTIVE TO/SOT KC 5 1000 UC282TD-1 OBSOLETE PFM KTT 5 UC282TD-2 OBSOLETE PFM KTT 5 UC282TD-3 OBSOLETE PFM KTT 5 UC282TD-ADJ OBSOLETE PFM KTT 5 UC282TDKTTT-1 ACTIVE PFM KTT 5 50 UC282TDKTTT-2 ACTIVE PFM KTT 5 50 UC282TDKTTT-3 ACTIVE PFM KTT 5 50 UC282TDKTTT-ADJ ACTIVE PFM KTT 5 50 UC282TDTR-1 ACTIVE PFM KTT 5 500 UC282TDTR-2 ACTIVE PFM KTT 5 500 UC282TDTR-3 ACTIVE PFM KTT 5 500 UC282TDTR-ADJ ACTIVE PFM KTT 5 500 UC382T-1 ACTIVE TO/SOT KC 5 50 UC382T-2 ACTIVE TO/SOT KC 5 50 UC382T-3 ACTIVE TO/SOT KC 5 50 UC382T-ADJ ACTIVE TO/SOT KC 5 50 UC382TD-1 OBSOLETE PFM KTT 5 UC382TD-2 OBSOLETE PFM KTT 5 UC382TD-3 OBSOLETE PFM KTT 5 UC382TD-ADJ OBSOLETE PFM KTT 5 UC382TDKTTT-1 ACTIVE PFM KTT 5 50 UC382TDKTTT-2 ACTIVE PFM KTT 5 50 UC382TDKTTT-3 ACTIVE PFM KTT 5 50 UC382TDKTTT-ADJ ACTIVE PFM KTT 5 50 UC382TDTR-1 ACTIVE PFM KTT 5 500 UC382TDTR-2 ACTIVE PFM KTT 5 500 UC382TDTR-3 ACTIVE PFM KTT 5 500 UC382TDTR-ADJ ACTIVE PFM KTT 5 500 (1)Themarketingstatusvaluesaredefinedasfollows: ACTIVE:Productdevicerecommendedfornewdesigns. LIFEBUY:TIhasannouncedthatthedevicewillbediscontinued,andalifetime-buyperiodisineffect. NRND:Notrecommendedfornewdesigns.Deviceisinproductiontosupportexistingcustomers,butTIdoesnotrecommendusingthispartin anewdesign. PREVIEW:Devicehasbeenannouncedbutisnotinproduction.Samplesmayormaynotbeavailable. OBSOLETE:TIhasdiscontinuedtheproductionofthedevice.

None

MECHANICAL DATA MSOT008B – JANUARY 1995 – REVISED SEPTEMBER 2000 KC (R-PSFM-T5) PLASTIC FLANGE-MOUNT 0.420 (10,67) 0.113 (2,87) 0.185 (4,70) 0.156 (3,96) DIA 0.380 (9,65) 0.103 (2,62) 0.175 (4,46) 0.146 (3,71) 0.055 (1,40) 0.045 (1,14) 0.147 (3,73) 0.137 (3,48) 0.340 (8,64) 0.330 (8,38) 1.037 (26,34) 0.125 (3,18) 0.997 (25,32) (see Note C) 1 5 0.040 (1,02) 0.122 (3,10) 0.067 (1,70) 0.030 (0,76) 0.102 (2,59) 0.010 (0,25) M 0.268 (6,81) 0.025 (0,64) 0.012 (0,30) 4040208/E 09/00 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. Lead dimensions are not controlled within this area. D. All lead dimensions apply before solder dip. E. The center lead is in electrical contact with the mounting tab. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1

IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI. Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: Products Applications Amplifiers amplifier.ti.com Audio www.ti.com/audio Data Converters dataconverter.ti.com Automotive www.ti.com/automotive DSP dsp.ti.com Broadband www.ti.com/broadband Interface interface.ti.com Digital Control www.ti.com/digitalcontrol Logic logic.ti.com Military www.ti.com/military Power Mgmt power.ti.com Optical Networking www.ti.com/opticalnetwork Microcontrollers microcontroller.ti.com Security www.ti.com/security Telephony www.ti.com/telephony Video & Imaging www.ti.com/video Wireless www.ti.com/wireless Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright  2004, Texas Instruments Incorporated