LTC3630 Datasheet, PDF (22/26 Pages) Linear Technology – High Efficiency, 65V 500mA Synchronous

LTC3630
TYPICAL APPLICATIONS
5V to 65V Input to 5V Output,150mA Regulator
with 20kHz Minimum Burst Frequency
V_IN
5V TO 65V
C_IN
2.2μF
R_ISET
60.4k
V_IN
SW
LTC3630
RUN V_FB
I_SET
SS
V_PRG2 V_PRG1
FBO
GND
L1
33μH
C_OUT
10μF
30.1Ω
IN
OUT
LTC6994-1
V⁺
976k
C_IN: TDK C3225X7R2AA225M
C_OUT: AVX 12063D106KAT
L1: COOPER BUSSMAN SD25-330
SET DIV
196k
GND
100k
3630 TA04
V_OUT
5V
150mA
Burst Frequency vs Load Current
60
V_IN = 3.3V
50
40
30
20kHz LIMIT
20
10
0
0
NO LIMIT
1
10
LOAD CURRENT (mA)
100
3630 TA04b
12V to 65V Input to 12V Output with 100mA Input Current Limit
V_IN
12V TO 65V
C_IN
2.2μF
R3
806k
R4
10k
V_IN
SW
LTC3630
RUN V_FB
I_SET
SS
FBO V_PRG1
V_PRG2
GND
L1
22μH
R1
200k
R2
14.3k
3630 TA05
V_OUT
C_OUT ^12V
22μF
C_IN: TDK C3225X7R2A225M
C_OUT: TAIYO YUDEN EMK316BJ226ML-T
L1:TDK SLF7045470MR75
Maximum Input and Load Current vs Input Voltage
500
400 MAXIMUM LOAD CURRENT
300
200
MAXIMUM INPUT CURRENT
100
0
10 15 20 25 30 35 40 45 50 55 60 65
INPUT VOLTAGE (V)
3630 TA05b
INPUT CURRENT LIMIT ~ ^VOUT s ^R4
2 R3R4
MAXIMUM LOAD CURRENT ~ ^VIN s ^R4
2 R3R4
3630fb
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