Linear Technology DC1721B-A, Demo Manual

Page: 10 / 12

10
dc1721bf
DEMO MANUAL
DC1721B-A/DC1721B-B
SCHEMATIC DIAGRAM
5 5
4 4
3 3
2 2
1 1
D
D
C
C
B
B
A
A
CHARGE
ENABLE
DISABLE
AND POWER MANAGER
R20
NOT ON THE BOARD
FROM PAGE 2
1. ALL RESISTORS ARE IN OHMS, 0603. ALL CAPACITORS ARE IN MICROFARADS, 0603.
NOTE: UNLESS OTHERWISE SPECIFIED
15V
GND
GND
THERMAL REGULATION FOR Q7 DURING 'INSTANT-ON' OPERATION
OPTIONAL THERMAL PROTECTION FOR Q6 DURING VOUT-SYS SHORT CIRCUIT
6.25A LIMIT
-A
LTC4000EGN
U2
-B
ASSY *
21.5K
LTC4000EGN-1
RIFB1
OPT
*
RIL
18.2K 2.00K
TMR
TMR
CHRG
CHRG
ITH
VIN+
RUN
VOUT
BIAS
NTC
BIAS
NTC
BIAS
INTVCC
VIN+
VIN
BIAS
IL
IL
IL
SIZE DATE:
IC NO.
R
EV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: (408)434-0507 Milpitas, CA 95035 Phone: (408)432-1900 1630 McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
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. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
Wednesday, February 06, 2013
12
STEP UP/DOWN BATTERY CHARGER
LT
DAVID B.
N/A
LTC4000EGN / EGN-1, LTC3789EGN DEMO CIRCUIT 1721B
SIZE DATE:
IC NO.
R
EV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: (408)434-0507 Milpitas, CA 95035 Phone: (408)432-1900 1630 McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
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. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
Wednesday, February 06, 2013
12
STEP UP/DOWN BATTERY CHARGER
LT
DAVID B.
N/A
LTC4000EGN / EGN-1, LTC3789EGN DEMO CIRCUIT 1721B
SIZE DATE:
IC NO.
R
EV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: (408)434-0507 Milpitas, CA 95035 Phone: (408)432-1900 1630 McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
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. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
Wednesday, February 06, 2013
12
STEP UP/DOWN BATTERY CHARGER
LT
DAVID B.
N/A
LTC4000EGN / EGN-1, LTC3789EGN DEMO CIRCUIT 1721B
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
R
EV
DAVID B.
PRODUCTION
2
1-29-13
__
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
R
EV
DAVID B.
PRODUCTION
2
1-29-13
__
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
R
EV
DAVID B.
PRODUCTION
2
1-29-13
__
+ -
U3
LTC1540CMS8
+ -
U3
LTC1540CMS8
GND
1
V-
2
IN+
3
IN-
4
HYST
5
6 REF
6
V+
7
OUT
8
E15E15
RCL 24K RCL 24K
CBIAS 1uF 10V CBIAS 1uF 10V
RNTC3 10K RNTC3 10K
Q8
2N7002L
Q8
2N7002L
1
3 2
RCS 10m RCS 10m
R48 10K R48 10K
R39 OPT R39 OPT
U2U2
VM
25
RST
26
IIMO N
27
IL/IFB
28
ENC
1
IBMO N
2
CX
3
CL
4
TMR
5
GND
6
FLT
7
CHRG
8
BIAS
9
NTC
10
FBG
11
BFB
12
BAT
13
BGATE
14
CSN
15
CSP
16
OFB
17
IGATE
18
IID
19
ITH
20
CC
21
CLN
22
IN
23
GND
24
CCX OPT CCX OPT
C35 0.01uF C35 0.01uF
E14
NTC
E14
NTC
R49 100K R49 100K
Q9 2N7002L Q9 2N7002L
1
3 2
E10
IBMON
E10
IBMON
R54 0 R54 0
C33 4.7uF 10V C33 4.7uF 10V
RC1
14.7K
RC1
14.7K
R42
O
PT
R42
O
PT
RBFB2 84.5K RBFB2 84.5K
CC2
0.1uF
CC2
0.1uF
RVM1 36.5K RVM1 36.5K
E17E17
CTMR 0.1uF CTMR 0.1uF
RIFB1
*
RIFB1
*
R46 2.2K R46 2.2K
CIBMON 1000pF CIBMON 1000pF
CBAT 2.2uF
0805
25V CBAT 2.2uF
0805
25V
RNTC2 10K RNTC2 10K
J5
GND
J5
GND
R51 0 R51 0
Q6 Si7135D Q6 Si7135D
4
5
1 2 3
6 7 8
J4
BAT 14.6V / 5A
J4
BAT 14.6V / 5A
R56 68.1K R56 68.1K
GRN RED
LED2
GRN RED
LED2
2
3
1
4
R43
O
PT
R43
O
PT
E20E20
R53 OPT R53 OPT
R62 OPT R62 OPT
E11
IIMON
E11
IIMON
RVM2
10K
RVM2
10K
RIL
*
RIL
*
CIN 1uF
1210
50V CIN 1uF
1210
50V
CIIMON 1000pF CIIMON 1000pF
RBFB1 1.00M RBFB1 1.00M
R58
38.3K
R58
38.3K
ROFB2 84.5K ROFB2 84.5K
RIG 10M RIG 10M
R59 1.00M R59 1.00M
D9
BZT52C3V0S
D9
BZT52C3V0S
1 2
+ -
U4
LTC1540CMS8
+ -
U4
LTC1540CMS8
GND
1
V-
2
IN+
3
IN-
4
HYST
5
6 REF
6
V+
7
OUT
8
CC1 OPT CC1 OPT
R45 1.00M R45 1.00M
CNTC
OPT
CNTC
OPT
JP1JP1
1
2
3
J3
VOUT-SYS
J3
VOUT-SYS
R52 0 R52 0
E18E18
R50 20K R50 20K
R57 20K R57 20K
CL 2.2uF
0805
25V CL 2.2uF
0805
25V
RCX 10K RCX 10K
E12
FLT
E12
FLT
R47 4.7K R47 4.7K
F1 6.3A F1 6.3A
R55 10K R55 10K
ROFB1 1.00M ROFB1 1.00M
Q7
Si7135D
Q7
Si7135D
4
5
1 2 3
6 7 8
R38 OPT R38 OPT
E13
CHRG
E13
CHRG
R44 38.3K R44 38.3K
Downloaded from
Arrow.com.
Downloaded from
Arrow.com.
Downloaded from
Arrow.com.
Downloaded from
Arrow.com.
Downloaded from
Arrow.com.
Downloaded from
Arrow.com.
Downloaded from
Arrow.com.
Downloaded from
Arrow.com.
Downloaded from
Arrow.com.
Downloaded from
Arrow.com.