Demo manual dc101, Sche atic diagra w w, Smart battery charger – Linear DC101 User Manual
Page 2: Smart battery charger with smbus interface
2
DEMO MANUAL DC101
SMART BATTERY CHARGER
SCHE ATIC DIAGRA
W
W
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
GND
SW
BOOST
GND
GND
UV
GND
OVP
CLP
CLN
COMP1
SENSE
GND
GND
V
CC1
V
CC2
V
CC3
PROG
V
C
UV
OUT
GND
COMP2
BAT
SPIN
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
MCLR
–
RA0/AN0
RA1/AN1
RA2/AN2
RA3/AN3
RA4
RA5/AN4
V
SS
OSC1
OSC2
RCO
CCP2
CCP1
SCL
RB7
RB6
RB5
RB4
RB3
RB2
RB1
RB0/INT
V
DD
V
SS
RC7
RC6
RC5
SDA
U2
LT1511
C11
10
µ
F
25V
Q4
MMBT3904LT1
C4
1
µ
F
25V
C3
33
µ
F
25V
Q1
2N7002LT1
Q3
2N7002LT1
C10
10
µ
F
25V
C5
1
µ
F
25V
C8
0.1
µ
F
C2
10
µ
F
10V
C9
0.47
µ
F
25V
D5
MBRS340T3
D3
MBRS340T3
L1
20
µ
H
E1
E2
D4
BAS16LT1
R10
0.05
Ω
1/2W
C9
0.1
µ
F
24V
2A
J2
CENTER POST
IS POSITIVE
C16
100pF
50V
R20
200
Ω
1/10W
1%
R2
301
Ω
1/10W
1%
R18
1k
1/10W
1%
5V
BOLD LINES INDICATE HIGH CURRENT PATHS
R3
1k
1/10W
1%
R24
10k
5%
R15
21.5k
1/10W
0.1%
R23
22
Ω
R8
0.033
Ω
1/2W
5V
R19
200
Ω
1/10W
1%
R14
330
Ω
R13
143k
1/10W
0.1%
C7
0.015
µ
F
25V
5%
C6
0.047
µ
F
D6
BAS16LT1
C12
10
µ
F
25V
J1
AMP-787441-1
SMART BATTERY
CONNECTOR
C18
10
µ
F
10V
TP1
TP2
TP3
TP4
TP5
C20
10
µ
F
25V
+
R12
100k
1/10W
0.1%
(+)
(+)
CLK
CLK
DATA
DATA
(T)
(T)
(–)
(–)
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
R11
510
Ω
R16
3.32k
1/10W
1%
R17
1.05k
1/10W
1%
V
OUT
V
IN
2
DC IN
13
5V
4
GND
U3
LT1129IST-5
TAB
+
C17
0.1
µ
F
Q2
2N7002LT1
UNLESS OTHERWISE SPECIFIED:
1. ALL RESISTANCES ARE IN OHMS, 1/10W, 5%
2. ALL CAPACITANCES ARE IN MICROFARADS, 50V, 10%
C14
33pF
SHUTDOWN
R4
3.32k
1%
U1
PIC16C73-20PS
CHARGER
ADJUSTMENT RANGE
PWM1: 3FFh = 22.4V
000h = 6V
PWM2:
3FFh = 4.1A
000h = 0A
C15
33pF
Y1
4MHz
R7
3.32k
1%
5V
JPR1
RESET
C1
0.1
µ
F
R26
10k
R5
330
Ω
D1
RED
(SMB)
S1
5V
RESET
R6
330
Ω
D2
GRN
(
µ
P)
E3
DC OUT
E4
R1
3.32k
1/10W
1%
R9
100k
R21
22k
5%
5V
R25
22k
5%
5V
E5
DC101 SD
E6
E7
SMBCLK
SMBDATA
INT
R22
22k
5%
5V
Smart Battery Charger with SMBus Interface