DC397A_15 Datasheet, PDF (1/1 Pages) Linear Technology – SCHEMATIC, LT1930A/31A, 2.2MHz, SOT-23 DC/DC CONVERTER PCB

LTC CONFIDENTIAL - For Customer Use Only
VIN
5V
E1
1
B
L1
2.2uH
LPO1704-222M
D1
ZHCS400
ON
JP1
OFF
SHDN
E3
1
2 ^C1
1uF
16V
C2
2.2uF
16V
U1
C3
R1 _10pF
115K
4 _SHDN
FB ³
GND
2
E4
1
LT1930A
R2
13.3K
BOOST
C4
2.2uF
16V
VOUT
12V 250mA
1
E2
C5
1uF
16V
VIN
10-16V
E5
1
ECO
A
REVISION HISTORY
REV
DESCRIPTION
DATE
1
INITIATED
02/13/01
2 MFR SPECS CONFIG DIAGRAM ERROR : CORRECT INDUCTOR PIN-OUT. 3/26/01
3 ADD R7; CHG L1, L2, L3.
6/6/01
4 CORR L2,L3 MFR#: WAS 92Y-153/5. R MV C5;CHG C4,D2,3; C6 TO C5 01/17/02
5 DEMO BOARD RELEASE
01/30/02
APPROVED
L2A
3.3uH
CMD5D13-4371-T004
2
1
C7
1uF
25V
D2
UPS140
2
VOUT
12V 250mA
1
E6
VIN
12V
E9
1
L3A
3.3uH
CMD5D13-4371-T004
2
1
C13
1uF
25V
L3B
3.3uH
4
3
ON
JP2
OFF
SHDN
E7
1
2
R7
118K
C8
1uF
16V
C9
2.2uF
16V
GND
E8
1
VOUT
-12V 250mA
1
E10
R3 _C10
U2
115K _OPT.
4 _SHDN
LT1930A
FB ³
R4
13.3K
SEPIC
L2B
3.3uH
C11
C12
2.2uF
1uF
16V
16V
ON
JP3
OFF
SHDN
E11
1
2 ^C14
1uF
16V
C15
2.2uF
16V
U3
R5
105K
4 _SHDN
NFB ³
C16
OPT.
C17
C18
C19
2.2uF
2.2uF
1uF
16V
16V
16V
R6
13.3K
D3
UPS140
GND
LT1931A
1 _E12
1
1
INVERTER
B
UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN INCHES
TOLERANCE ON ANGLE - - -
2 PLACES - - - 3 PLACES - - -
INTERPRET DIM AND TOL
PER ASME Y14.5M -1994
THIRD ANGLE PROJECTION
DO NOT SCALE DRAWING
CONTRACT NO.
APPROVALS
DRAWN _L.SANTOS
CHECKED
APPROVED
ENGINEER
DESIGNER
DATE
02/07/01 _TITLE
TECHNOLOGY
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: [phone]
Fax: [phone]
SCHEMATIC, LT1930A/31A, 2.2MHz, SOT-23 DC/DC CONVERTER PCB
SIZE CAGE CODE
DWG NO
REV
A
DC397A
5
Wednesday, January 30, 2002 _{SCALE: NONE FILENAME: 397A_r5.DSN}
A
SHEET
1
OF ¹