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| LTC3630 Datasheet, PDF (21/26 Pages) Linear Technology – High Efficiency, 65V 500mA Synchronous | |||
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TYPICAL APPLICATIONS
4V to 24V Input to 3.3V Output,
250mA Regulator with External Soft-Start, Small Size
VIN
4V TO 24V
CIN
2.2μF
VIN
SW
LTC3630
RUN
VFB
ISET
SS
FBO VPRG1
VPRG2
GND
L1
10μH
COUT
10μF
VOUT
3.3V
250mA
CSS
100nF
RISET
100k
3630 TA02a
CIN: MURATA GRM42-2X7R225K25D500
COUT: KEMET C1206C206K9PAC
L1: VISHAY IHLP2020BZ-100M-11
LTC3630
Efficiency and Power Loss vs Load Current
100
VOUT = 3.3V
90
80
EFFICIENCY
70
60
50
POWER
40
30
20
10
0
0.1
1
10
LOAD CURRENT (mA)
1000
100
10
1
0
100
3630 TA02b
4V to 53V Input to â12V Output, Positive-to-Negative Converter
VIN
4V TO 53V
CIN
4.7μF
100V
VIN
SW
LTC3630
RUN VFB
ISET
SS
FBO VPRG2
VPRG1
GND
L1
22μH
R1
200k
R2
147k
CIN: KEMET C1210C475K5RAC
COUT: TDK C4532X7R1C226M
L1: COILCRAFT MSS1048-223ML
COUT
22μF
VOUT
3630 TA03a â12V
Maximum Load Current vs Input Voltage
500
VOUT = â12V
400
300
200
100
0
5 10 15 20 25 30 35 40 45 50
INPUT VOLTAGE (V)
3630 TA03b
3630fb
21
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