AT1369
Preliminary Product Information
2-Channel Synchronous Buck PWM Controller
with Power Good Reset
Pin Configuration
Ordering Information
Part number
AT1369A
Package
SSOP20
SSOP20
Marking
AT1369AR
AT1369BR
AT1369B
A: fosc =300KHz B: fosc =600KHz
Pin Description
Symbol Pin No.
Descript
Symbol
SS2
Pin
Descript
No.(A/B)
FB1
1
Inverting input to error
amplifier 1
11
Sotf-start 2
COMP1
PVCC
2
3
Error amplifier1 output
Power blocks power
supply
SCP
CTL
12
13
Short-Circuit protection
Chip enable, high active
PDRV1
4
Output1 for Pch-MOSFET VCC
14
Control blocks power
supply
NDRV1
NDRV2
PDRV2
5
6
7
Output1 for Nch-MOSFET GND
Output2 for Nch-MOSFET RESET
15
16
17
Control blocks ground
Power Good indicator
VCC monitor voltage
adjustable input pin
Adjustable Reset input
Output voltage 3.3V
Output2 for Pch-MOSFET
IN1
PGND
8
9
Power blocks ground
Error amplifier1 output
EI
18
19
COMP2
3V3
FB2
10
Inverting input to error
amplifier 2
SS1
20
Sotf-start 1
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
WWW: http://www.aimtron.com.tw
Email: service@aimtron.com.tw
2
GMT [ GLOBAL MIXED-MODE TECHNOLOGY INC ]
