AP3766 Ver la hoja de datos (PDF) - BCD Semiconductor

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AP3766

LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER

BCD Semiconductor 

Preliminary Datasheet

LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER

General Description

Features

AP3766

The AP3766 is a high performance AC/DC power sup- · Primary Side Control for Rectangular Constant

ply controller for battery charger and adapter applica-

Current and Constant Voltage Output

tions. The device uses Pulse Frequency Modulation · Sub-microampere Start-up Current

(PFM) method to build discontinuous conduction · 30mW No-load Input Power Feasible

mode (DCM) flyback power supplies.

· Tight CC Regulation Performance

The AP3766 provides accurate constant voltage, con- · Eliminates Opto-coupler and Secondary CV/CC

stant current (CV/CC) regulation while removing the

opto-coupler and secondary control circuitry. It also

·

Control Circuitry

Eliminates Control Loop Compensation Circuitry

eliminates the need of loop compensation circuitry · Flyback Topology in DCM Operation

while maintaining stability. The AP3766 achieves · Random Frequency Modulation to Reduce

excellent regulation and high average efficiency, yet

System EMI

meets the requirement for no-load consumption less · Built-in Soft Start

than 30mW.

· Open Feedback Protection

The AP3766 is available in SOT-23-6 package.

· Short Circuit Protection

· SOT-23-6 Package

Applications

· Adapters/Chargers for Cell/Cordless Phones,

PDAs, MP3 and Other Portable Apparatus

· LED Drivers

· Standby and Auxiliary Power Supplies

Feb. 2010 Rev. 1. 0

SOT-23-6

Figure 1. Package Type of AP3766

BCD Semiconductor Manufacturing Limited

1

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