Preliminary Datasheet

380kHz, 3A Asynchronous DC - DC Buck Converter

AP3203

Mar. 2011 Rev. 1. 0

BCD Semiconductor Manufacturing Limited

3

TR: Tape & Reel

Blank: Tube

Functional Block Diagram

S

R

Q

Q

Internal Bias

and Regulator

Oscillator

90k/380k

2

1

5V

M1

0.12

BS

Current

Sense

Amplifier

CLK

SLOP COMP

7

5

4

3

M2

10

SW

GND

Error

Amplifier

6

COMP

FB

1.222

0.6

Short

Protection

Comparator

Shutdown

Comparator

0.4/1.5V

1.3V

8

SS

PWM

Comparator

IN

EN

6 A

Internal

Pull High

Figure 3. Functional Block Diagram of AP3203

Ordering Information

AP3203

-

Circuit Type

Package

MP: PSOP-8

Package

Temperature

Range

Part Number

Marking ID

Packing Type

AP3203MP-G1

3203MP-G1

Tube

PSOP-8

-40 to 85ºC

AP3203MPTR-G1

3203MP-G1

Tape & Reel

BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant

and green.

G1: Green