The AP3776B is a high performance AC/DC power supply controller for battery charger and adapter applications. It can meet less than 10mW standby power for “Super Star” charger criteria. The device uses Pulse Frequency Modulation (PFM) method to build discontinuous conduction mode (DCM) flyback power supplies.

 

The AP3776B provides accurate constant voltage (CV), constant current (CC) and outstanding dynamic performance without requiring an opto-coupler. It also eliminates the need of loop compensation circuitry while maintaining stability.

 

The AP3776B achieves excellent regulation and high average efficiency, less than 10mW no-load power consumption and less than 1s startup time. When AP3776B is used with AP4341, APR343 or APR3415, good under-shoot performance and higher conversion efficiency can be achieved.

 

The AP3776B is available in SO-8 package.

Primary Side Control for Eliminating Opto-coupler

10mW No-load Input Power

Compensation for External Component Temperature Variations

Flyback Topology in DCM Operation

Random Frequency Adjustment to Reduce System EMI

Semi-valley Turn on for the Higher Efficiency

Built-in Soft Start

Over Voltage Protection

Over Temperature Protection

Short Circuit Protection

AP4341, APR343 or APR3415 Awaking Signal Detection

Audio Noise Reduction

Internal Cable Compensation

SO-8 Package

Totally Lead-Free & Fully RoHS Compliant

Halogen and Antimony Free. “Green” Device