DC1923A - Schematic

5
4
3
2
1
REVISION HISTORY
VIN
E1
VIN
2.4V - 15V
RUN
ON
OFF
R3
OPT
JP1
RUN
4
RUN
MPPC
5
MPPC
C10
10pF
VCC
3
ON
OFF
U1
LTC3129EUD-1
R5
OPT
MPPC
JP2
R6
OPT
VCC
VS1
VCC
GND
PWM
-
2
PRODUCTION FAB
J.NOON
01 - 02 - 13
JP4
VCC PWM
13
14
BST2
C3
10uF
25V
1210
E3
VCC
E5
PGOOD
PWM
VS3 7
VS2 8
VS3
VS1 9
VS1
GND
GND
GND
VS2
VS3
VS2
E4
JP5
VS3
JP6
C
* VOUT JUMPER CONFIGURATION
JP6 / VS3
VCC
GND
D
* VOUT
5.0V / 200mA
VIN > VOUT
C4
1uF
25V
PGOOD
PWM 10
VS2
VS1
VOUT
R1
2M
VOUT 12
VCC
C7
OPT
6.3V
B
SW2
16
C9
2.2uF
R4
2M
MPPC
VCC
GND
C
VIN
DATE
PGOOD 11
PGND
RUN
APPROVED
C6
22nF
50V
VIN
17
R2
2M
DESCRIPTION
VOUT
15
2
GND
VIN
SW1
C5
22nF
50V
1
GND
REV
L1
EPL3015 -103
C2
1uF
25V
BST1
E2
C1
22uF
25V
1210
6
+
D
C8
OPT
7343
ECO
JP5 / VS2
JP4 / VS1
LTC3129 - 1
VOUT
GND
GND
GND
2.5V
GND
GND
VCC
GND
VCC
GND
3.3V
4.1V
GND
VCC
VCC
5.0V
VCC
GND
GND
6.9V
VCC
GND
VCC
VCC
VCC
GND
8.2V
12V
VCC
VCC
VCC
15V
B
FIXED FREQ
BURST MODE
JP3
CUSTOMER NOTICE
A
NOTE: UNLESS OTHERWISE
SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0402
ALL CAPACITORS ARE IN MICROFARADS, 0603.
5
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
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
4
3
APPROVALS
PCB DES.
NC
APP ENG.
J.NOON
SCALE = NONE
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
15V, 200mA SYNCHRONOUS BUCK - BOOST DC / DC
CONVERTER WITH 1.3uA QUIESCENT CURRENT
SIZE
IC NO.
REV.
LTC3129EUD-1
N/A
2
DEMO CIRCUIT 1923A
DATE: 01 - 02 - 13
2
SHEET 1
1
OF
1
A
5
4
3
2
1
D
D
VOUT
VOUT
PGOOD
PGOOD
DUST PWR VOUT
VOUT
C
NC
CAUTION: ONLY
CONNECT IF VOUT IS
CONFIGURED FOR 3.3V
J1
3
1
3
5
7
9
11
Q1
ZXMN2F30FH
VSUPPLY
NC
GND
PGOOD
KEY
VBAT
RSVD
EHORBAT
I/O 2
I/O 1
+5V
V+
2
4
6
8
10
12
SMH-106-02-L-D-05
2
1
C
PGOOD
JP7
PGOOD
GND
B
B
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.
A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
APPROVALS
PCB DES.
NC
APP ENG.
J.NOON
SCALE = NONE
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
15V, 200mA SYNCHRONOUS BUCK - BOOST DC / DC
CONVERTER WITH 1.3uA QUIESCENT CURRENT
SIZE
IC NO.
REV.
LTC3129EUD-1
N/A
2
DEMO CIRCUIT 1923A
DATE: 01 -02 - 13
2
SHEET 2
1
OF
2
A
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