Description

LP3773CA is a  high performance constant voltage and constant current control chip (CV/CC) without requiring  opto-coupler and the secondary control circuitry ，using Pulse Frequency Modulation (PFM) method to build discontinuous conduction mode (DCM) flyback power supplies and applicable to the isolation of the flyback type power supply . LP3773CA built-in high VCBO power triode， is the best choice for the  low  power adapter and charger.  LP3773CA adopting unique output line loss compensation technology, can effectively compensate the loss of output current on the output line voltage drop by adjusting the FB partial pressure resistance tolerance.

Features

•   1) Built-in high voltage power triode

•   2) The valley opening technology，improving the system efficiency

•   3) High precision constant pressure constant current characteristics

•   4) <75 mw standby power consumption to meet US DoE VI

•   5) The unique output line loss compensation technology

•   6) Open circuit protection, over voltage protection, short circuit protection,over temperature protection

 

Application

Adapter, battery charger, standby power supply，LED drive power supply，Upgrading the best choice - linear power supply and RCC switching power supply

 

Recommended Power Usage

 

Model	Vin：90VAC~265VAC，50/60Hz
LP3773CA	5.0W

 

Schematic Circuit Diagram

 

Pin Definition

 

order information

Model	Definition	Packing	Print
LP3773CA	SOP7	3000pcs/real	LP3773 CAxxxx