AP3703 datasheet(1/11 Pages) BCDSEMI

tên linh kiện	AP3703

Giải thích chi tiết về linh kiện	LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER

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LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER

AP3703

Preliminary Datasheet

1

BCD Semiconductor Manufacturing Limited

Feb. 2009 Rev. 1.0

General Description

The AP3703 is a high performance AC/DC power sup-

ply controller for battery charger and adapter applica-

tions. The device uses Pulse Frequency Modulation

(PFM) method to build discontinuous conduction

mode (DCM) flyback power supplies.

The AP3703 provides accurate constant voltage, con-

stant current (CV/CC) regulation while removing the

opto-coupler and secondary control circuitry. It also

eliminates the need of loop compensation circuitry

while maintaining stability. The AP3703 achieves

excellent regulation and high average efficiency, yet

meets the requirement for no-load consumption less

than 100mW.

The AP3703 is available in SOT-23-5 package.

Features

·

Primary Side Control for Rectangular Constant

Current and Constant Voltage Output

·

Secondary CV/CC Control Circuitry Eliminating

Opto-Coupler

·

No Need for Control Loop Compensation

Circuitry

·

Flyback Topology in DCM Operation

·

Random Frequency Modulation to Reduce

System EMI

·

Built-in Soft Start

·

Open Feedback Protection

·

Over Voltage Protection

·

Short Circuit Protection

·

Small SOT-23-5 package to achieve compact size

and less component

Applications

·

Adapters/Chargers for Cell/Cordless Phones,

PDAs, MP3 and Other Portable Apparatus

·

Standby and Auxiliary Power Supplies

·

LED Driver

Figure 1. Package Type of AP3703

SOT-23-5

Số phần tương tự - AP3703

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BCD Semiconductor Manuf...	AP3700	186Kb / 10P	LOW POWER PWM CONTROLLER FOR OFF-LINE BATTERY CHARGER
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	AP3700AZ-E1	228Kb / 11P	LOW POWER PWM CONTROLLER FOR OFF-LINE BATTERY CHARGER
	AP3700AZ-G1	228Kb / 11P	LOW POWER PWM CONTROLLER FOR OFF-LINE BATTERY CHARGER
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