AP7344 DUAL 300mA HIGH PSRR LOW NOISE LDO WITH ENABLE Description Pin Assignments The AP7344 is a Dual low dropout regulator with high output voltage accuracy, low R , high PSRR, low output noise and low quiescent DSON (Top View) current. This regulator is based on a CMOS process. Each of regulators includes a voltage reference, error amplifier, current limit circuit and an enable input to turn on/ off output. With the integrated resistor network fixed output voltage versions can be delivered. With its low power consumption and line and load transient response, the AP7344 is well suited for low power handheld communication equipment. X2-DFN1612-8 The AP7344 is packaged in X2-DFN1612-8 package and allows for smallest footprint and dense PCB layout. Features Applications Low V and Wide V Range: 1.7V to 5.25V IN IN Guarantee Output Current: 300mA Smart Phone/PAD V Accuracy 1% RF Supply OUT Ripple Rejection: 75dB at 1kHz Cameras Low Output Noise: 60Vrms from 10Hz to 100kHz Portable Video Quiescent Current as Low as 50A Portable Media Player V Fixed 1.2V to 3.6V Wireless Adapter OUT Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Wireless Communication Halogen and Antimony Free, Green Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See AP7344 Pin Descriptions Pin Number Pin Name Function GND 1, 4 Ground V 2 Channel 1 Output Voltage pin OUT1 V 3 Channel 2 Output Voltage pin OUT2 Chanel 2 Enable pin. This pin should be driven either high or low and must not EN2 5 be floating. Driving this pin high enables channel 2 output, while pulling it low puts Chanel 2 regulator into shutdown mode. V 6 Input Voltage pin IN2 V IN1 7 Input Voltage pin Chanel 1 Enable pin. This pin should be driven either high or low and must not EN1 8 be floating. Driving this pin high enables channel 1 output, while pulling it low puts Chanel 1 regulator into shutdown mode. In PCB layout, prefer to use large copper area to cover this pad for better Thermal PAD thermal dissipation, then 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 IN1 OUT1 IN1 V OUT1 R1 1 R1 1 Error Amp. Error Amp. R2 1 R2 1 Vref Vref Current Limit Current Limit GND EN1 EN1 GND V V IN2 IN2 R1 2 R1 2 Error Amp. Error Amp. R2 2 R2 2 Vref Vref Current Limit Current Limit EN2 VOUT2 EN2 VOUT2 AP7344 (No Discharge) AP7344 (With Discharge) 2 of 15 AP7344 November 2016 Diodes Incorporated www.diodes.com Document number: DS37368 Rev. 2 - 2 NEW PRODUCT