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LTC3630
21
3630fd
For more information www.linear.com/LTC3630
Typical applicaTions
V
FB
I
SET
SW
L1
10µH
V
IN
RUN
C
OUT
10µF
C
IN
2.2µF
C
SS
100nF
R
ISET
100k
C
IN
: MURATA GRM32RR71E225KA01
C
OUT
: KEMET C1206C106K9PAC
L1: VISHAY IHLP2020BZ-100M-11
V
OUT
3.3V
250mA
V
IN
4V TO 24V
3630 TA02a
FBO
SS
V
PRG2
V
PRG1
GND
LTC3630
4V to 24V Input to 3.3V Output,
250mA Regulator with External Soft-Start, Small Size
4V to 53V Input to –12V Output, Positive-to-Negative Converter
Efficiency and Power Loss vs Load Current
Maximum Load Current vs Input Voltage
LOAD CURRENT (mA)
30
EFFICIENCY (%)
POWER LOSS (mW)
90
100
20
10
80
50
70
10
1
0
100
1000
60
40
0.1 10 100
3630 TA02b
0
1
EFFICIENCY
POWER LOSS
V
IN
= 12V
INPUT VOLTAGE (V)
5
0
MAXIMUM LOAD CURRENT (mA)
100
300
400
500
15
25
30 50
3630 TA03b
200
10 20
35
40
45
V
OUT
= –12V
V
FB
SW
L1
22µH
V
IN
RUN
I
SET
FBO
C
OUT
22µF
R1
200k
C
IN
4.7µF
C
IN
: TDK C5750X7R2A475M
C
OUT
: TDK C4532X7R1C226M
L1: COILCRAFT MSS1048-223ML
V
OUT
–12V
V
IN
4V TO 53V
3630 TA03a
SS
V
PRG1
V
PRG2
GND
LTC3630
R2
147k
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