Panasonic Toughbook CF-18BHKZXDM Service Manual page 91

Main 37 Charger
1
2
3
4
5
6
7
018:F7
8
9
10
11
A B
DCIN&BATT
NEC
SOP8
Pch/Nch
4 G2
3 S2
2 G1
B 1 S1
3225
UPA1792G
Q87
C516
10u
25V
PGND
PGND
DCIN
0.1u 1608
50V
C517
SGND
VA3
R450
470K
R448
10K
D 3
3LN01S-TL
2
G
3
S 1
Q86
CHGEN Q85
2
UNR9214J0L 1608
1
SGND
CHGPWM
018:D4
C D
Q1:Nch SYNC FET
D2 5
D2
6
D1
7
Q2:Pch CTL FET
D1
8
L31
1 2
919AS-160M=P3
PGND
1 DCIN 20
INFET
2 ICL# BGATE 19
PGND
3 ACP/SHDN# 18
PGND
150K
4.7
4 RT 17
TGATE
R455 1005
R454
1%
5 FAULT# 16
CLP
1005
0.1u
6 GND 15
CLN
1500p
1608
C590
7 VFB 14
FLAG#
1005
C6 50V
8 NTC 13
BATMON
5.6K
B
9 ITH 12 3K
BAT
1%
C519
R453
0.1u 10 PROG 11 3K
CSP
50V 1%
C521
0.01u
100K
R451
1%
1005
R452
36.5K
1%
1005
D 3
3LN01S-TL
2
G
S 1
Q92
SGND
PGND
SGND
E F
CHARGE
R462 33m
5%
2125
1/4W
B B
16V
R463
2012
3225 3225
5%
NU
C525
1/4W
10u
PGND PGND
036:G3
INFET
036:I3
SENSE+
B
0.1u
DCIN&BATT
50V
C524
R458
4.7K
PGND
R456
1005
R457
1005
ERA3YKB104V
R459
100K
0.1%
1608
ERA3YKB104V
R460
100K
0.1%
1608
ERA3YEB333V
VREF=1.19V 1%
R461
33K
0.1%
1608
SGND
G H I
16V
C526
10u
J