AP3703 View Datasheet(PDF) - BCD Semiconductor

Part Name

Description

Manufacturer

AP3703

LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER

BCD Semiconductor 

Preliminary Datasheet

LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER

Functional Block Diagram

AP3703

5

FB

0.1V

COMP

UVLO

pfm

OVP

pro

&

OCkP

Tonsec

Detector

Tons

VCC

3

Regulator

&

Bias

UVLO

4

CS

4.0V

EA

Tons

S&H

V+

Vea

COMP

V+

pfm_d

Vea

COMP

0.5V

pfm

LEB Delay

430ns

t

pfm_d

COMP

0.46V

Tons

VDD

I

3.75V COMP

0.75*I

CV_ctrl

RQ

S

RQ

CC_ctrl

S

pfm

1

Driver

OUT

2

GND

Figure 3. Functional Block Diagram of AP3703

Feb. 2009 Rev. 1.0

BCD Semiconductor Manufacturing Limited

3

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