AT1368

1-Channel Synchronous Buck PWM Controller

with Power Good Reset

2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

Fax: 886-3-563-0879

2

Pin Configuration

Ordering Information

Part number

Package

Marking

AT1368A

SSOP16

AT1368AR

AT1368B

SSOP16

AT1368BR

AT1368B

TSSOP16

AT1368BP

A: fosc =300KHz B: fosc =600KHz

Pin Description

Symbol

Pin No.

Descript

Symbol

Pin

No.(A/B)

Descript

FB

1

Inverting input to error

amplifier

SCP

9

Short-Circuit protection

COMP

2

Error amplifier output

CTL

10

Chip enable, high active

PVCC

3

Power blocks power

supply

NC

11

-

PDRV

4

Output for Pch-MOSFET

IN1

12

VCC monitor voltage

adjustable input pin

NDRV

5

Output for Nch-MOSFET

RESET

13

Power Good indicator

PGND

6

Power blocks ground

IN2

14

3V3 output monitor

adjustable input pin

GND

7

Control blocks ground

SS

15

Sotf-start

VCC

8

Control blocks power

supply

3V3

16

Output voltage 3.3V