DC912A - Schematic

A
B
C
D
E
NOTES:
GND
4
VBAT
E1
L2
15uH
CDRH2D18/HP-150NC
L1
15uH
CDRH2D18/HP-150NC
VIN
4
3V-10V
5
GND
RUN/SS
U1
LT3487EDD
Off
2
E7
On
2
2
SWP
VPOS
3
3.0V
45mA
90mA
3.6V
60mA
110mA
90mA
A
10
E6
C10
0.1uF, 16V
X5R
GND
2
2
* OUTPUT CURRENTS
IOUT1
IOUT2
VOUT1 = 15V
VOUT2 = -8V
5V
9
C11
0.1uF
X5R
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
VIN
3
C7
0.1uF, 16V
X5R
E8
Q1
2N7002
1
R3
100K
1
C6
10uF, 16V
X5R
3
RUN
FVP
C5
10pF
VOUT1 *
FVN
C9
27pF
1
JP1
Output
1
R1
549K
1%
Exposed Pad
Bottom Side
7
C8
10uF, 10V
X5R
3
VIN
CAP
R2
324K
1%
E5
VBAT
4
DN
GND
C4
0.1uF
X5R
11
E4
8
3
C3
2.2uF, 25V
X5R
SWN
L3
15uH
CDRH2D18/HP-150NC
VOUT2 *
C2
Opt.
C1
1uF
X5R
6
E3
150mA
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.
This Circuit Is Proprietary To Linear Technology And
Supplied For Use With Linear Technology Parts.
C
LINEAR TECHNOLOGY CORPORATION
1630 McCARTHY BLVD.
MILPITAS, CA. 95035
408-432-1900
408-434-0507 FAX
Title
1
Boost and Inverting DC/DC Converters
Size
Document Number
Date:
Friday, May 05, 2006
Demo Circuit 912A
D
Sheet
Rev
LT3487EDD
1
E
of
1
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