CF-Y2 - Panasonic PC Service Manual (repair manual). Page 85

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34
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
Main 34 Charge
C547
0.01u
FDW256P
Q99
FAIRCHILD
TSSOP8
Pch-MOSFET
1
D
2
S
3
S
4
G
8 D
7 S
6 S
5 D
C554
0.1u
B
1608
50V
C552
1u
2125
25V
C551
1u
2125
25V
SENSE+
026:H3
PGND
R522
0.18
2125
BATVOL
SGND
R523
470K
VA3
DCIN&BATT
MA2J72900L
D53
1
2
CHGDA
022:D4
25V
C558
10u
B
3225
XP0331200L
Q95
3
6
4
2
1
R514
33
C545
1u
B
1608
R508
10
SENSE-
026:H3
R524
1K
C556
0.1u
B
1608
C549
1u
B
1608
R519
1
25V
C557
10u
B
3225
CHGON
022:F7;034:B9
UNR9213J0L
Q100
3
1
2
PGND
R515
100
25V
C544
1u
2125
R511
27K
0.5%
R521
0.22
2125
R518
1
C555
0.1u
B
1608
R512
10K
0.5%
FDS6690A
Q97
FAIRCHILD
SOP8
Nch-MOSFET
@partN
1
S
2
S
3
S
4
G
8
D
7
D
6
D
5
D
1SS357(TPH3F)
D54
1
2
CHGON
022:F7;034:J8
C548
0.01u
MAX1772EEI-TG068
IC59
@packa
MAXIM
1 DCIN
2 LDO
3 CLS
4 REF
28
IINP
27
CSSP
26
CSSN
25
BST
5 CCS
6 CCI
7 CCV
8 GND
9 GND
10 ICHG
11 ACIN
12 ACOK
13 REFIN
14 ICTL
24
DHI
23
LX
22
DLOV
21
DLO
20
PGND
19
CSIP
18
CSIN
17
BATT
16
CELLS
15
VCTL
ACIN
SGND
R517
4.7
16V
C560
10u
B
3225
SGND
R513
1K
R516
4.7
R510
47K
FDS6690A
Q98
FAIRCHILD
SOP8
Nch-MOSFET
@partN
1
S
2
S
3
S
4
G
8
D
7
D
6
D
5
D
PGND
919AS-220M=P3
L51
10x10x4.5
1
2
C550
0.1u
B
1608
R520
0.22
2125
R509
1K
6.3V
C546
10u
2125
B
SGND
16V
C559
10u
B
3225
C553
0.1u
B
1608
50V
2SK3503-T1-A
Q96
@compC
2
G
3
D
1
S
EP10QY03
D55
2
1
R507
150K
CELLS(16) :              VCELLS < 0.20V     -> 2 serieses
            0.40V      < VCELLS < VLDO-0.5V -> 3 serieses
            VLDO-0.25V < VCELLS < VLDO      -> 4 serieses
REF(4) : 4.096Vtyp.(4.072
4.120V)
VREFIN = 3.3V
VREFIN / 32
VREFIN / 55typ.(0.06V) : PowerOFF
VREFIN / 100(0.033V) : powerOFF
uCom_Low : 0.4V
uCom_VREF = 5V
LOWSIDE-FET: Nch , ID > 8A , RDS(on) < 100m
Ω
 , Qg < 10nC
LDO(2) : 5.4Vtyp.(5.25
5.55V)
VICHG = Ichg x Rsense x GICHG x R (GICHG = 1msec)
  VICHG : 0
3V
VBATT = CELLS x (VREF + ((VREF x VVCTL)/(10 x VREFIN)))
ICHG  = VREF x VICTL / (Rsense x VREFIN x 20)
0.5
_R : 8.358 - 8.413 - 8.47 V
0.5
_R : 2.124 - 2.19 - 2.26 A
The nominal differential voltage between CSIP to CSIN is 204mV(typ.).(189
219mV)
                         voltage between CSSP to CSSN is 204mV(typ.).(189
219mV)
Di         : IF>1.8A(maximumu current as set by Rsense)
f=1 / ( 2 x 
π
 x R(LDO(2)->DLOV(22)) x C(DLOV(22)->GND) )
  f=1/(2x
π
x33x0.1u)=48.2KHz
VICTL = VREFIN/32 
 VREFIN
shutdown -- VREFIN/55(typ.) , VREFIN/100(min.)
Rsense     : 0.05
Ω
(0.15 x3 , Ichg(max)=4A) , 0.11
Ω
(0.22 x2 , Ichg(max)=1.8A)
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