LTC3637_15 Datasheet, PDF (26/26 Pages) Linear Technology – 76V, 1A Step-Down Regulator

LTC3637
TYPICAL APPLICATION
5.5V to 76V Input to 5V Output, 1A Step-Down Regulator
V_IN
5.5V TO 76V
C_IN
2.2µF
V_IN
SW
LTC3637
L1
5.2µH
D1
RUN
V_FB
OVLO
SS
V_PRG2 V_PRG1
FBO
I_SET
GND
3637 TA07a
C_OUT
47µF
V_OUT
5V
1A
C_IN: TDK CGA6N3X7R2A225K
C_OUT: MURATA GCM32ER70J476KE19L
D1: VISHAY SS2H10
L1: COILCRAFT MSS1038T-522
Efficiency vs Load Current
100
V_OUT = 5V
90
80
70
60
50
40
30
20
10
0
0.1
V_IN = 12V
V_IN = 24V
V_IN = 70V
1
10
100
LOAD CURRENT (mA)
1000
3637 TA07b
RELATED PARTS
PART NUMBER DESCRIPTION
COMMENTS
LTC3639
150V, 100mA Synchronous Step-Down Regulator
V_IN: 4V to 150V, V_OUT(MIN) = 0.8V, I_Q = 12µA, I_SD = 1.4µA,
MSOP-16(12)E
LTC3630A
76V, 500mA Synchronous Step-Down DC/DC Converter
V_IN: 4V to 76V, V_OUT(MIN) = 0.8V, I_Q = 12µA, I_SD = 3µA,
3 × 5 DFN-16, MSOP-16(12)E
LTC3642
45V (Transient to 60V) 50mA Synchronous Step-Down
DC/DC Converter
V_IN: 4.5V to 45V, V_OUT(MIN) = 0.8V, I_Q = 12µA, I_SD = 3µA,
3 × 3 DFN-8, MSOP-8
LTC3631
45V (Transient to 60V) 100mA Synchronous Step-Down
DC/DC Converter
V_IN: 4.5V to 45V, V_OUT(MIN) = 0.8V, I_Q = 12µA, I_SD = 3µA,
3 × 3 DFN-8, MSOP-8
LTC3632
50V (Transient to 60V) 20mA Synchronous Step-Down
DC/DC Converter
V_IN: 4.5V to 50V, V_OUT(MIN) = 0.8V, I_Q = 12µA, I_SD = 3µA,
3 × 3 DFN-8, MSOP-8
LT^®3990
LTC3891
62V, 350mA, 2.2MHz High Efficiency Micropower Step-Down
DC/DC Converter with I_Q = 2.5µA
Low I_Q, 60V Synchronous Step-Down Regulator
V_IN: 4.2V to 62V, V_OUT(MIN) = 1.21V, I_Q = 2.5µA, I_SD < 1µA,
3 × 3 DFN-10, MSOP-16E
V_IN: 4V to 60V, V_OUT(MIN) = 0.8V, I_Q = 50µA, I_SD = 14µA,
3 × 4 QFN-20, TSSOP-20E
26 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 950_Fo3_r5_m-7_o4_re1_i7_{nformation www.linear.com/LTC3637}
[phone] ^● FAX: [phone] ^● www.linear.com/LTC3637
3637fa
LT 0514 • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2013