AP131 300mA LOW DROPOUT LINEAR REGULATOR WITH SHUTDOWN Features General Description • Input Voltage Range is from 2.7 to 5.5V The AP131 is a 300mA, fixed output voltage, low dropout linear • Dropout Voltage 400mV at 300mA Output Current regulator. The Device included pass element, error amplifier, • Guaranteed 300mA Output Current band-gap, current limit and thermal shutdown circuitry. The • Internal Ron = 1.5Ω PMOS draws no Base Current device is ON when the EN pin is set to logic high level. • Low Quiescent Current 50µA The characteristics of low dropout voltage and less quiescent • Output Voltage: 1.5V/1.8V/2.0V/2.5V/2.8V/ current make it good for some critical current applications, for • 2.9V/3.0V/3.3V/ 3.5V; Accuracy 2% example, some battery powered devices. The typical quiescent • Active Low Shutdown Function (EN pin) current is approximately 50µA from zero to maximum load. Due • Fast Transient Response to the internal flexible design, it results in extensively fixed output • Good Load Regulation voltage versions and makes it convenient to use for applications. • Current Limit and Thermal Shutdown Protection Built-in current-limit and thermal-shutdown functions prevent any • Short Circuit Current Fold-Back fault condition from IC damage. An external capacitor can be • Lead Free package: SOT25 connected to the BP pin and reduce the output noise. • SOT25: Available in “Green” Molding Compound (No Br, Sb) • Lead Free Finish/RoHS Compliant (Note 1) Applications • Battery Powered Device • Wireless Communication • CD-ROM, DVD, and LAN Card • PC Peripheral Ordering Information AP131 - 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 29 :2.9V 30 :3.0V 33 :3.3V 35 :3.5V Package Packaging 7” Tape and Reel Device Code (Note 2) Quantity Part Number Suffix AP131-XXWL-7 W SOT25 3000/Tape & Reel -7 Lead-free AP131-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. AP131 Rev. 7 1 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated

AP131 300mA LOW DROPOUT LINEAR REGULATOR WITH SHUTDOWN Pin Assignment ( Top View ) IN 1 5 OUT 2 EN 3 4 BP SOT25 Pin Description Pin Name Description IN Input Voltage GND Ground EN Enable Pin BP Band-gap OUT Output Voltage Block Diagram IN OUT Error Current Amp Limit - + EN Enable Bandgap 1.08V Thermal Shutdown GND BP AP131 Rev. 7 2 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated

AP131 300mA LOW DROPOUT LINEAR REGULATOR WITH SHUTDOWN Absolute Maximum Ratings Symbol Parameter Rating Unit V Input Voltage +6 V CC T Operating Junction Temperature Range -40 to +125 ºC OP T Storage Temperature Range -65 to +150 ºC ST P Power Dissipation, P @ T = 25ºC SOT25 250 mW D D A 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 AP131 Rev. 7 3 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated

AP131 300mA LOW DROPOUT LINEAR REGULATOR WITH SHUTDOWN Electrical Characteristics T = 25ºC, C = 1µF, C = 10µF, unless otherwise specified. A IN OUT Symbol Parameter Conditions Min Typ. Max Unit V Dropout Voltage (Note 3) I = 300mA - 400 500 mV DROP L I Current Limit (Note 4) V = 5V, V = 0V 350 450 - mA LIMIT IN OUT I Short Circuit Current V < 1.05V - 150 300 mA short OUT I =1mA, V =(V +1V ) ΔV Line Regulation OUT IN OUT - 0.1 0.3 %/V LINE to 5.5V ΔV Load Regulation (Note 5) I = 1~300mA, V = 5V - 30 35 mV LOAD L IN Output Voltage Accuracy I = 1mA, V = 5V -2 - +2 % L IN ΔVOUT Output Voltage Temperature PPM/ - 50 150 Coefficient (Note 6) ºC F = 100Hz, PSRR Ripple Rejection C = 1μF, C = 10uF, - 60 - dB IN O I = 100mA L I Standby Current I = 0mA, V = 5V, EN = 0V - - 5 μA SB L IN I Quiescent Current I = 0mA, V = 5V, EN = 5V - 50 100 μA Q L IN I Enable Pin Current - - < 0.1 μA EN V Output ON 1.5 - V V ENON IN Enable Pin Voltage V Output OFF 0 - 0.8 V ENOFF C = 0.1μF, C = 1μF, T Enable Delay Time BP OUT - 8 - μS DELAY I = 30mA OUT θ Thermal Resistance SOT25 (Note 7) 163 OC/W JA Junction-to-Ambient θ Thermal Resistance SOT25 (Note 7) 53 OC/W JC Junction-to-Case Notes: 3. Dropout voltage is defined as the input to output differential voltage. Dropout is measured at constant junction temperature by using pulsed ON time, and the criterion is VOUT inside target value ±2%. This test is skipped at the condition of VIN<3V. 4. Current limit is measured at constant junction temperature by using pulsed testing with a low ON time. 5. Regulation is measured at constant junction temperature by using pulsed testing with a low ON time. 6. Guaranteed by design. 7. Test conditions for SOT25: Device mounted on FR-4 substrate PC board, 2oz copper, with minimum recommended pad layout. AP131 Rev. 7 4 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated

AP131 300mA LOW DROPOUT LINEAR REGULATOR WITH SHUTDOWN Typical Characteristics 70 AP131 PSRR vs. Frequency AP131 Vout vs. Load Current 3.095 65 3.09 60 3.085 55 3.08 50 3.075 B) 45 3.07 R (d 3450 Vout3.30.6056 R 3.055 S 30 3.05 P 25 3.045 20 3.04 15 3.035 10 3.03 5 3.025 0 3.02 0 30 60 90 120 150 180 210 240 270 300 330 10 100 1K 10K 100K 1M Load Current (uA) Frequency (Hz) AP131 GND Current vs. Input Voltage AP131 Dropout vs. Load 55 450 50 VOUT=3.3V 400 45 A)40 350 urrent (u233505 pout (V) 223050000 D C20 Dro 150 N15 G10 100 5 50 0 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 0 50 100 150 200 250 300 Input Voltage (V) Load (Io) (mA) Typical Application Circuit ON EN AP131 OFF EN IN OUT VOUT V IN GND BP C IN C 1uF OUT C 10uF BP 0.1uF AP131 Rev. 7 5 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated

AP131 300mA LOW DROPOUT LINEAR REGULATOR WITH SHUTDOWN 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 AP131-15W SOT25 DA AP131-18W SOT25 DD AP131-20W SOT25 DF AP131-25W SOT25 DK AP131-28W SOT25 DN AP131-29W SOT25 DO AP131-30W SOT25 DP AP131-33W SOT25 DS AP131-35W SOT25 DU Package Information (All Dimensions in mm) AP131 Rev. 7 6 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated

AP131 300mA LOW DROPOUT LINEAR REGULATOR WITH SHUTDOWN 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. AP131 Rev. 7 7 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: D iodes Incorporated: AP131-15WG-7 AP131-18WG-7 AP131-20WG-7 AP131-25WG-7 AP131-28WG-7 AP131-29WG-7 AP131-30WG- 7 AP131-33WG-7 AP131-35WG-7 AP131-20WL-7 AP131-18WL-7