Datasheet

LTC3631
18
3631fe
For more information www.linear.com/LTC3631
Typical applicaTions
Small Size, Limited Peak Current, 20mA Regulator
V
IN
LTC3631
RUN
C
IN
1µF
R3
470k
R4
100k
R5
33k
I
SET
3631 TA05a
SW
V
IN
7V TO 45V
V
OUT
5V
20mA
V
FB
SS
HYST
GND
L1
470µH
R1
470k
R2
88.7k
C
IN
: TDK C3225X7R1H105KT
C
OUT
: AVX 08056D106KAT2A
L1: MURATA LQH43CN471K03
C
OUT
10µF
V
IN
LTC3631
RUN
C
IN
1µF
SS
3631 TA07a
SW
V
IN
15V TO 45V
V
OUT
15V
20mA
V
FB
HYST
I
SET
GND
L1
1000µH
R1
3M
R2
169k
C
IN
: AVX 18125C105KAT2A
C
OUT
: TDK C3216X7R1E475KT
L1: TDK SLF7045T-102MR14
C
OUT
4.7µF
High Efficiency 15V, 20mA Regulator Efficiency vs Load Current
LOAD CURRENT (mA)
0.1
80
EFFICIENCY (%)
90
100
1 10 100
3631 TA07b
70
75
85
95
65
60
V
IN
= 45V
V
IN
= 36V
V
IN
= 24V