AP7343 300mA HIGH PSRR LOW NOISE LDO WITH ENABLE Description Pin Assignments The AP7343 is a low dropout regulator with high output voltage (Top View) (Bottom View) accuracy, low R , high PSRR, low output noise, and low DS(ON) quiescent current. This regulator is based on a CMOS process. The AP7343 includes a voltage reference, error amplifier, current limit EP circuit, and an enable input to turn it on and off. With the integrated resistor network fixed output voltage versions can be delivered. With its low power consumption and line and load transient response, X2-DFN1010-4 (Type B) the AP7343 is well suited for low-power handheld communication equipment. PIN1 V , PIN2 GND, PIN3 EN, PIN4 V OUT IN The AP7343 is packaged in the X2-DFN1010-4 (Type B) and SOT25 (Top View) packages, allowing for the smallest footprint and a dense PCB layout. V V IN 1 5 OUT GND 2 EN 3 4 NC SOT25 Features Applications Low V and Wide V Range: 1.7V to 5.25V Smart Phone/Tablet IN IN Guarantee Output Current: 300mA RF Supply V Accuracy 1% Cameras OUT Ripple Rejection 75dB at 1kHz Portable Video Low Output Noise, 60Vrms from 10Hz to 100kHz Portable Media Player Quiescent Current as Low as 35A Wireless Adapter V Fixed 0.9V to 3.6V Wireless Communication OUT Moisture Sensitivity: Level 1 Per J-STD-020 Terminals: SOT25: Finish - Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208 X2-DFN1010-4 (Type B): Finish - NiPdAu over Copper Leads, Solderable per MIL-STD-202, Method 208 Weight: SOT25: 0.016 grams (Approximate) X2-DFN1010-4 (Type B): 0.001 grams (Approximate) Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen- and Antimony-Free. Green Device (Note 3) For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. AP7343 Typical Applications Circuit V IN V OUT V V IN OUT COUT AP7343 1F CIN 1F EN GND Pin Descriptions Pin Number Pin Name Function X2-DFN1010-4 SOT25 (Type B) 1 5 V Power Output Pin OUT 2 2 GND Ground Enable Pin 3 3 EN This pin should be driven either high or low and must not be floating. Driving this pin high enables the regulator, while pulling it low puts the regulator into shutdown mode 4 1 Power Input Pin VIN 4 NC No connection In PCB layout, prefer to use large copper area to cover this pad for better thermal dissipation, then EP Exposed Pad connect this area to GND or leave it open. However, do not use it as GND electrode function alone Functional Block Diagram V V V V IN OUT IN OUT Thermal Thermal VREF Current Limit VREF Current Limit Shutdown Shutdown GND GND EN EN AP7343D (With Discharge) AP7343 (Without Discharge) 2 of 19 January 2021 AP7343 Diodes Incorporated www.diodes.com Document number: DS37952 Rev. 9 - 2