DC1830B - Schematic

5
4
3
2
1
24
RBFB1
1M
RBFB3
84.5k
OPT
U1 *
D1
BZT52C3V0S-7-F
SOD323
IL/IFB
2
VOUT- SYS
E11
GND
E12
J7
BAT
CBAT
150uF
35V
E6
GND
E13
BAT
E14
GND
NTC
NTC
14
BIAS
13
E15
CNTC
OPT
R2
OPT
RST
RCX
CCX
OPT
RCL
24.3k
CBIAS
1uF
16V
*
CHRG_LED
ENABLE
GND
E21
GND
CIBMON
1000pF
R4
E17
IIMON
BIAS
D3
RED
D2
GREEN
R5
2.2k
100k
DISABLE
E7
DISABLE
E8
*
OPTIONAL THERMAL PROTECTION FOR Q1
DURING VOUT-SYS SHORT CIRCUIT
R18
4.7k
JP3
ENABLE
FLT_LED
R6
4.7k
R7
D4
RED
100k BIAS
E9
LED_PWR
THERMAL REGULATION FOR Q2
DURING 'INSTANT-ON' OPERATION
U1
R16
38.3k
4
IN-
5
HYST
6
+
-
3
Q6
OUT
2N7002L
4
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 0603.
ASSY TP CKT. FOR Q1 REG CKT. FOR Q2
LTC4000
LTC4000
-A
-B
LTC4000-1
-C
NOT LOADED
LOADED
LTC4000-1
-D
NOT LOADED
LOADED
R21
Q2 / R22
RIFB1
RIL
ROFB2
CBGATE
SI7135DP
OPT
84.5k
2.2uF
10nF
LOADED
0 OHM
OPT
LRC-LRZ-2010LF-R000
SI7135DP
OPT
68.1k
18.2k
18.2k
RCX
10.0k
CL
OPT
2k
OPT
84.5k
0 OHM OPT
10.0k 2.2uF
OPT
10nF
NOT LOADED
0 OHM
LRC-LRZ-2010LF-R000
68.1k
2k
OPT
0 OHM
OPT
LOADED
NOT LOADED
CUSTOMER NOTICE
6 REF
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
NOTE: UNLESS OTHERWISE SPECIFIED
DISABLE
JP1
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
1
R17
1Meg
E10
GND
RST_LED
ENABLE
OPT
8 1
2
IN+
GND
R15
20k
GND
6 REF
7
3
V-
2N7002L
NTC
V+
1
RNTC2
10k
2
R12
1Meg
8
R14
78.7k
2
HYST
6
OUT
R13
10k
2
5
+
-
V+
IN-
V-
R10
20k
IN+
4
Q5
U3
LTC1540CMS8
1
R11
38.3k
3
3
IL/IFB
7
R9
46.4k
C1
4.7uF
10V
R19
100k
*
BIAS
U2
LTC1540CMS8
RST
E18
BIAS
B
JP4
FLT
RNTC3
10k
NOT ON THE BOARD
IBMON
CIIMON
1000pF
CHRGB
CHRG
*
C
J8
J9
TMR
2
GND
GND
28
GND
CCL
OPT
10
8
29
CL
IL / IFB
4
TMR
*
RIL
CIL
OPT
GND
R3
OPT
7
CX
DISABLE
JP2
B
D
E16
ENABLE
A
9
3
CTMR
0.1uF
CHARGE
R8
10k
VOUT- SYS
CL1 - CL5
OPT
1206 X
5
PLCS
BIAS
GND
BIAS
6
IIMON
CHRG
ENC
RVM2
2.49k
CVM
OPT
IL/IFB
TMR
1
*
RIFB1
J5
12
1
E5
VM
RVM1
35.7k
VIN+
5
VIN+
3V - 60V
IBMON
IN
CIN
1uF
50V
1210
J4
C
+
BIAS
FLT
27
07 - 03 - 12
NTC
CLN
11
E4
DATE
DAVID B.
ITH
E3
26
APPROVED
PRODUCTION FAB
LTC4000EUFD / LTC4000EUFD - 1
VIN
RIS1
0.015
DESCRIPTION
1
*
CHRGB
OPT
GND
REV
-
CL
50V
1206
F3
FUSE
OPT
RBFB2
15
21
17
18
19
20
*
ROFB2
OFB
R1
BAT
BIAS
VIN
TO DC / DC
BGATE
J3
CC
OPT
23
0.1uF
4.22k
25
PULLUP
ROFBX
OPT
*
R21
0
IID
R20
CBGATE
RBFBX
OPT
16
CC2
RC1
ROFB1
1M
7
6
5
8
*
CIGATE
OPT
ITH
E20
RIG
OPT
CSP
CC1
OPT
E19
RBG
OPT
CSN
J2
3
2
1
CHRGB
GND
3
2
1
4
GND
7
6
5
8
COUT
2.2uF
50V
1206
22
E22
IGATE
E2
Q4
OPT
BFB
GND
RCS
0.01
ECO
J6
F2
FUSE
FBG
4
Q3
OPT
7
6
5
8
4
VOUT
1
REVISION HISTORY
F1
FUSE
OPT
Q2 / R22
3
2
1
E1
2
*
7
6
5
8
4
J1
VOUT
FROM DC / DC
3V - 30V
D
3
Q1
Si7135DP
3
APPROVALS
PCB DES.
NC
APP ENG.
DAVE B.
TECHNOLOGY
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
BATTERY CHARGER CONTROL AND POWER MANAGEMENT
SIZE
IC NO.
N/A
SCALE = NONE
2
DATE:
LTC4000EUFD / LTC4000EUFD - 1
DEMO CIRCUIT 1830B - A / B / C / D
07 - 03 - 12
SHEET 1
1
REV.
1
OF
1
A
Similar pages