AP139 300mA LOW-NOISE CMOS LDO Features General Description • Very Low Dropout Voltage The AP139 is a positive voltage linear regulator utilizing CMOS • Low Current Consumption: Typ. 45μA, max. 60uA technology. The features that include low quiescent current • Output Voltage: 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 3.0V (45μA typ.), low dropout voltage, and high output voltage 3.3V, and 3.5V accuracy, make it ideal for battery applications. EN input • Guaranteed 300mA Output connected to the device will produce a low bias current. • Input Range from 2.7 up to 5.5V The space-saving SOT25 package is attractive for “pocket” and “hand held” applications. • Thermal Shutdown • Current Limiting This rugged device has both thermal shutdown, and current limit • Stability with Low ESR Capacitors protections to prevent device failure under the “worst” operating • Low Temperature Coefficient conditions. • Lead Free Package: SOT25 • SOT25: Available in “Green” Molding Compound In a low noise, regulated supply application, a 10nF capacitor is (No Br, Sb) necessary to be placed in between Bypass and Ground. • Lead Free Finish/RoHS Compliant (Note 1) The AP139 is stable with a low ESR output capacitor of 1.0μF or greater. Applications • Personal Communication Devices • Home Electric/Electronic Appliances • PC Peripherals • Battery-Powered Devices Ordering Information AP139 - XX W X - 7 Output Voltage Package Lead Free Packing 15 :1.5V W : SOT25 L : Lead Free 7 : T a pe & Reel 18 :1.8V G : Green 20 :2.0V 25 :2.5V 28 :2.8V 30 :3.0V 33 :3.3V 35 :3.5V Package Packaging 7” Tape and Reel Device Code (Note 2) Quantity Part Number Suffix AP139-XXWL-7 W SOT25 3000/Tape & Reel -7 Lead-free AP139-XXWG-7 W SOT25 3000/Tape & Reel -7 Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. AP139 Rev. 6 1 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated

AP139 300mA LOW-NOISE CMOS LDO Pin Assignments Pin Descriptions ( Top View ) VOUT BYP Pin Pin No. Description 5 4 Name V 1 Power Supply IN GND 2 Ground AP139 EN 3 Enable Pin BYP 4 Bypass Signal Pin V 5 Output OUT 1 2 3 VIN GND EN SOT25 Block Diagram VIN VOUT Current Limit 1uA Thermal Shutdown R1 EN BYP - AMP + Vref R2 GND Absolute Maximum Ratings Symbol Parameter Rating Unit V Input Voltage +6 V IN I Output Current P /(V -V ) mA OUT D IN O V Output Voltage GND - 0.3 to V + 0.3 V OUT IN ESD Classification B T Operating Junction Temperature Range -40 to +125 ºC OP T Maximum Junction Temperature 150 ºC MJ P Internal Power Dissipation 250 mW D AP139 Rev. 6 2 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated

AP139 300mA LOW-NOISE CMOS LDO Recommended Operating Conditions Symbol Parameter Min Max Unit V Input voltage 2.7 5.5 V IN I Output Current 0 300 mA OUT T Operating Ambient Temperature -40 85 °C A Electrical Characteristics (T = +25ºC, unless otherwise noted) A Symbol Parameter Test Conditions Min Typ. Max Unit V Input Voltage Note 3 - 5.5 V IN I Quiescent Current I = 0mA - 45 60 μA Q O I Standby Current V = 5.0V, V = 0V, V < V - 2.0 3.0 μA STB IN OUT EN EL V Output Voltage Accuracy I = 1mA, V = 5V -2 - 2 % OUT O IN V Temperature OUT - 50 - ppm/ oC Coefficient I = 1mA to 300mA, V Dropout Voltage O V ≥2.8V - - 0.45 V DROPOUT V = V - 1.5% O OUT O(NOM) I Output Current 300 - - mA OUT I Current Limit V > 1.05V 300 450 - mA LIMIT OUT Ishort Short Circuit Current Vcc = 5V, Vout < 1.05V - 150 300 mA △V Line Regulation I = 1mA, V = (V +1V) to 5.5V - 0.1 0.3 % LINE OUT IN OUT △V Load Regulation I = 1mA to 300mA, V = 5V - 0.3 1 % LOAD O IN f = 1KHz - 60 - I = 100mA, PSRR Power Supply Rejection O f = 10KHz - 50 - dB C = 2.2μF ceramic O f = 100KHz - 40 - I = 100mA, f = 1KHz - 75 - O PSRR Power Supply Rejection C = 2.2μF ceramic, f = 10KHz - 55 - dB O C = 20nF f = 100KHz - 30 - BYP V Output ON 1.7 - - V EH EN Input Threshold V Output OFF - - 0.8 V EL I Enable Pin Current - - <0.1 μA EN Over Temperature OTS - 130 - oC Shutdown Over Temperature OTH - 20 - oC Hysteresis θ Thermal Resistance SOT25 (Note 4) 226 ºC/W JA θ Thermal Resistance SOT25 (Note 4) 34 ºC/W JC Notes: 3. VIN(MIN) = VOUT + VDROPOUT. 4. Test conditions for SOT25: Devices mounted on FR-4 PC board, MRP, 1 oz. copper, single sided, calibrate at TJ=85 ºC, measure at TA=25 ºC, no heat Sink, no air flow. AP139 Rev. 6 3 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated

AP139 300mA LOW-NOISE CMOS LDO Typical Application IN V V OUT IN OUT AP139 BYP GND EN C1 C2 C3 1uF 10nF 1uF Typical Performance Characteristics Vcc Vs Quiescent Current 100 90 80 A) μ 70 nt ( 60 e Curr 50 nt 40 e c es 30 ui Q 20 TA=25℃ 10 0 3.5 4 4.5 5 5.5 6 Vcc (V) Power Supply Rejection Ratio Power Supply Rejection Ratio 0 0 Iout = 100mA BP = 10nF -10 -10 -20 -20 100mA -30 -30 PSRR (dB) ---654000 BP = 1nF BP = 5nF PSRR (dB) ---654000 10mA 1mA -70 -70 BP = 10nF -80 -80 BP = 20nF -90 -90 1.0E+00 1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06 1.0E+00 1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06 Frequency (Hz) Frequency (Hz) AP139 Rev. 6 4 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated

AP139 300mA LOW-NOISE CMOS LDO Typical Performance Characteristics (Continued) Power Supply Rejection Ratio Vout Vs Current Limit 0 0.7 BP=0 -10 0.6 100mA -20 0.5 -30 A) PSRR (dB) ---654000 10mA Current Limit (00..34 1mA 0.2 -70 0.1 -80 Vcc=5V -90 0 1.5 1.8 2 2.5 2.8 3 3.3 3.5 1.0E+00 1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06 Frequency (Hz) Vout (V) Vcc Vs Short Current 400 350 300 A) m250 urrent (200 TVoopu tt=o1 b.5oVttom C ort 150 Vout=1.8V Sh Vout=2.5V 100 Vout=3.3V 50 0 3.5 4 4.5 5 5.5 6 Vcc (V) Functional Description The AP139 of CMOS regulators contain a PMOS pass transistor, Enable voltage reference, error amplifier, over-current protection, The enable pin normally floats high. When actively, pulled low, thermal shutdown. the PMOS pass transistor shuts off, and all internal circuits are powered down. In this state, the quiescent current is less than The P-channel pass transistor receives data from the error 2μA. This pin behaves much like an electronic switch. amplifier, over-current protection, and thermal protection circuits. During normal operation, the error amplifier compares the output External Capacitor voltage to a precision reference. The over-current and thermal The AP139 is stable with a low ESR output capacitor to ground of shutdown circuits become active when the junction temperature 1.0μF or greater. It can keep stable even with higher ESR exceeds 130oC, or the current exceeds 300mA. During thermal capacitors. A second capacitor is recommended between the shutdown, the output voltage remains low. Normal operation is input and ground to stabilize V . The input capacitor should be IN restored when the junction temperature drops below 110oC. larger than 0.1μF to have a beneficial effect. All capacitors should be placed in close proximity to the pins. A “quiet” ground The AP139 switches from voltage mode to current mode when termination is desirable. the load exceeds the rated output current. This prevents over-stress. AP139 Rev. 6 5 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated

AP139 300mA LOW-NOISE CMOS LDO Marking Information (1) SOT25 ( Top View ) 5 4 7 XX : Identification code Y : Year 0~9 XX Y W X W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week 1 2 3 X : a~z : Lead Free A~Z : Green Part Number Package Identification Code AP139-15W SOT25 N0 AP139-18W SOT25 N1 AP139-20W SOT25 N2 AP139-25W SOT25 N3 AP139-28W SOT25 N4 AP139-30W SOT25 N5 AP139-33W SOT25 N6 AP139-35W SOT25 N7 Package Information (All Dimensions in mm) AP139 Rev. 6 6 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated

AP139 300mA LOW-NOISE CMOS LDO IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated. AP139 Rev. 6 7 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated

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