High Precision CC/CV Primary-Side Regulation Controller

Features

l Low Start-Up Current (<8uA)

l Primary-Side Feedback Control with PFM Operation

l Built-In Adjustable Load Regulation Compensation

l Constant Voltage/Constant Current Operation

l Output Short Protection

l FB Pin Open/Short Protection

l Soft Driver

l 2ms Soft-start

l OVP (Over Voltage Protection) on Vcc Pin

l On Chip OTP Protection

l SOT-26 Package with Few External Components Needed

Description

The GR1215 is a high performance primary side feedback controller with PFM operation for flyback converter. It minimizes the components counts and is available in a tiny SOT-26 package. Those make it an ideal design for low cost application. It provides functions of low startup current, green-mode power-saving operation, VCC over-voltage protection, and FB pin abnormal conditions sensing to prevent the circuit being damaged from the abnormal conditions.

Applications

l Mobile Phone Charger

l Lower Power AC/DC Adapter

Typical Application Information

Package