Datasheet

33
LTC1703
1703fa
TYPICAL APPLICATIO S
U
Complete 2-Step Notebook Power Supply (Continued From the Previous Page)
D1 TO D7: MOTOROLA
[phone]
Q1 TO Q5, QT1A/1B, QB1A/1B:
INTERNATIONAL RECTIFIER
(310) 22-3331
QT2, QB2: FAIRCHILD
[phone]
L1, L2, L3: PANASONIC
[phone]
L4, L5: COILTRONICS
[phone]
1 2 3 4 5 6 7 8 9
10 11 12 13 14
28 27 26 25 24 23 22 21 20 19 18 17 16 15
PV
CC
BOOST1 BG1 TG1 SW1 I
MAX1
FCB RUN/SS1 COMP1 SGND FB1 SENS VID0 VID1
I
MAX2
BOOST2
BG2
TG2
SW2
PGND
FAULT
RUN/SS2
COMP2
FB2
V
CC
VID4 VID3 VID2
LTC1703
+
+
+
V
OUT4
0.9V TO 2V
12A
1µF
180µF, 4V
× 6
L3, 0.8µH
ETQP6F0R8L
D5 MBRD- 835L
QB1A IRF7811
QB1B IRF7811
QT1A IRF7811
QT1B IRF7811
D6
MBR0520LT1
1µF
18.7k, 1%
R18, 1M
0.22µF
200pF
15pF
100k
220pF
10k
1µF
24.9k, 1%
D7 MBR0520LT1
QT2
NDS8926
QB2 NDS8926
L4 2.2µF
DO3316P-222
1µF
150µF
6V × 2
POINT A
L5, 0.33µH
DO3316P-331HC
V
OUT3
1.5V 3A
180µF
4V
11.5k
1%
10.2k 1%
2200pF
10Ω
1k
1µF
1703 TA02
100k
15pF
220pF
0.22µF
1µF
VID0 VID1 VID2 VID3 VID4
COREVENABLE
1.5V ENABLE
FAULT
0.1µF