Datasheet

28
LTC3704
3704fb
© LINEAR TECHNOLOGY CORPORATION 2006
LT 0307 REV B • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com
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PART NUMBER DESCRIPTION COMMENTS
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IN
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IN
≤ 30V, Current Mode Control,
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OSC
from 50kHz to 1MHz
LTC1872 SOT-23 Boost Controller Delivers Up to 5A, 550kHz Fixed Frequency, Current Mode
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IN
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High Efficiency Positive-to-Negative Converter
R
T
80.6k
1%
R1
1.21k
1%
R2
3.65k
1%
R4
154k
1%
C
VCC
4.7μF
M1
C
IN
: TDK C5570X5R1C476M
C
OUT1
: TDK C5750X5R0J107M
C
OUT2
: PANASONIC EEFUE0J151R
C
DC
: TDK C5750X7R1E226M
C
VCC
: TDK C2012X5R0J475K
D1
L1*
C
IN
47μF
16V
L2*
R
C
9.1k
C
C1
10nF
C
C2
330pF
C
OUT1
100μF
6.3V
V
IN
5V TO 15V
V
OUT
–5V
5A
GND
3704 TA02
+
C
OUT2
150μF
6.3V
D1: FAIRCHILD MBR2035CT
L1, L2: COILTRONICS VP5-0053 (*COUPLED INDUCTORS, WITH 3
WINDINGS IN PARALLEL ON PRIMARY AND SECONDARY)
M1: INTERNATIONAL RECTIFIER IRF7822
C
DC
22μF
25V
X7R
R5
68.1k
1%
C9
1nF
OPTIONAL
RUN
I
TH
NFB
FREQ
MODE/SYNC
SENSE
V
IN
INTV
CC
GATE
GND
LTC3704
U
TYPICAL APPLICATIO
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