AT1397A/B
Preliminary Product Information
6-Channel DC-DC Converter for DSC
PVCC3
OUT3M
OUT3S
VBAT
VBG
VLENS
+3V
CH3
VBAT
Voltage-Mode
Synchronous
Step-Down
VCC
GND
C1
R1
PGND3
FB3
R2
COMP3
SS3
PVCC1
VBAT
COMP1
CH1
LX1
VDSP_Core
+1V8
Current-Mode
Synchronous
Step-Down
PWM
PGND1
FB1
SS1
PVCC2
VBAT
CH2
VDSP_IO
+3V3
Current-Mode
Synchronous
Step-Down
PWM
LX2
COMP2
PGND2
FB2
SS2
/SDOK
Figure 1. Using /SDOK to drive external P-MOSFET that gates 3V power to LENs after 3.3V I/O voltage is in regulation
7F, No.9, Park Avenue 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
1/10/2006
REV:1.0
14
AIMTRON [ AIMTRON TECHNOLOGY ]
