AP7346 DUAL HIGH ACCURACY CURRENT LIMIT LDO WITH ENABLE Description Pin Assignments The AP7346 is a dual high accuracy current limit ,low dropout Top View regulator with high output voltage accuracy, low R , high PSRR, DS(ON) low output noise and low quiescent current. This regulator is based on a CMOS process. 6 5 4 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. 1 2 3 With its low power consumption and line and load transient response, the AP7346 is well suited for low power handheld communication equipment. X2-DFN1212-6 The AP7346 is packaged in X2-DFN1212-6 package and allows for smallest footprint and dense PCB layout. Applications Features Fingerprint Modular Low V and Wide V Range: 1.7V to 5.25V Smart Phone/PAD IN IN High Accuracy Current Limit: 157mA+/- 25mA 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 1.2V to 3.6V Wireless Communication OUT Totally Lead-Free & and Fully RoHS Compliant (Notes 1 & 2) 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 AP7346 Pin Descriptions Pin Number Pin Name Function 1 V Channel 1 output voltage pin OUT1 2 V Channel 2 output voltage pin OUT2 3 GND Ground Chanel 2 enable pin. This pin should be driven either high or low and must not 4 EN2 be floating. Driving this pin high enables channel 2 output, while pulling it low puts Chanel 2 regulator into shutdown mode. V 5 Power input pin IN Chanel 1 enable pin. This pin should be driven either high or low and must not 6 EN1 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 EN1 V IN EN2 With Discharge 2 of 14 AP7346 July 2015 Diodes Incorporated www.diodes.com Document number: DS38082 Rev. 1 - 2 NEW PRODUCT