LTC3630
TYPICAL APPLICATIONS
5V to 65V Input to 5V Output,150mA Regulator
with 20kHz Minimum Burst Frequency
Burst Frequency vs Load Current
L1
60
50
40
30
20
10
0
33ꢀH
V
V
= 3.3V
OUT
IN
V
IN
V
SW
LTC3630
RUN
5V
IN
5V TO 65V
C
C
OUT
150mA
IN
2.2ꢀF
10ꢀF
V
FB
30.1Ω
SS
I
SET
V
V
PRG2 PRG1
FBO
R
ISET
IN
OUT
60.4k
GND
20kHz LIMIT
LTC6994-1
+
V
976k
NO LIMIT
1
SET
DIV
C
C
: TDK C3225X7R2AA225M
: AVX 12063D106KAT
IN
OUT
196k
100k
GND
L1: COOPER BUSSMAN SD25-330
0
10
100
3630 TA04
LOAD CURRENT (mA)
3630 TA04b
12V to 65V Input to 12V Output with 100mA Input Current Limit
Maximum Input and Load Current vs Input Voltage
L1
22ꢀH
500
V
V
IN
OUT
V
SW
LTC3630
IN
12V TO 65V
12V
C
IN
C
OUT
22ꢀF
R1
MAXIMUM LOAD CURRENT
400
300
200
2.2ꢀF
200k
R3
806k
RUN
V
FB
R2
14.3k
I
SS
SET
R4
10k
V
PRG1
V
PRG2
FBO
GND
3630 TA05
MAXIMUM INPUT CURRENT
100
0
C
C
: TDK C3225X7R2A225M
IN
: TAIYO YUDEN EMK316BJ226ML-T
OUT
L1:TDK SLF7045470MR75
10 15
30 35 40 45 50 55 60 65
20 25
INPUT VOLTAGE (V)
3630 TA05b
VOUT
2
R4
R3ꢁR4
INPUT CURRENT LIMIT ~
s
V
2
R4
R3ꢁR4
IN
MAXIMUM LOAD CURRENT ~
s
3630fb
22
Linear Systems [ Linear Systems ]
