LTC3632_15 Datasheet, PDF (22/22 Pages) Linear Technology – High Efficiency, High Voltage 20mA Synchronous Step-Down Converter

LTC3632
TYPICAL APPLICATION
5V, 20mA Regulator for Automotive Applications
V_BATT
4.5V TO 50V
TRANSIENTS UP TO 60V
L1
1mH
V_IN
SW
C_IN
1µF
LTC3632
RUN
V_FB
I_SET
SS
HYST
R1
470k
R2
88.7k
GND
C_OUT
10µF
V_OUT*
5V
20mA
3632 TA06a
C_IN: TDK C3225X7R2A105M
C_OUT: KEMET C1210C106K4RAC
L1: COILTRONICS DRA73-102-R
*V_OUT = V_BATT FOR V_BATT < 5V
RELATED PARTS
PART NUMBER
DESCRIPTION
LTC3631/LTC3631-3.3/ 45V, 100mA Synchronous Micropower Step-Down DC/DC Converter
LTC3631-5
LTC3642/LTC3642-3.3/ 45V, 50mA Synchronous Micropower Step-Down DC/DC Converter
LTC3642-5
LTC1474
18V, 250mA (I_OUT), High Efficiency Step-Down DC/DC Converter
LT1934/LT1934-1
LT1939
LT3437
LT3470
LT3685
36V, 250mA (I_OUT), Micropower Step-Down DC/DC Converter with
Burst Mode Operation
25V, 2A, 2.5MHz High Efficiency DC/DC Converter and LDO
Controller
60V, 400mA (I_OUT), Micropower Step-Down DC/DC Converter with
Burst Mode Operation
40V, 250mA (I_OUT), High Efficiency Step-Down DC/DC Converter
with Burst Mode Operation
36V with Transient Protection to 60V, 2A (I_OUT), 2.4MHz, High
Efficiency Step-Down DC/DC Converter
COMMENTS
V_IN: 4.5V to 45V (60V_MAX), V_OUT(MIN) = 0.8V, I_Q = 12µA,
I_SD = 3µA, 3mm × 3mm DFN8, MSOP8E
V_IN: 4.5V to 45V (60V_MAX), V_OUT(MIN) = 0.8V, I_Q = 12µA,
I_SD = 3µA, 3mm × 3mm DFN8, MSOP8E
V_IN: 3V to 18V, V_OUT(MIN) = 1.2V, I_Q = 10µA, I_SD = 6µA,
MSOP8
V_IN: 3.2V to 34V, V_OUT(MIN) = 1.25V, I_Q = 12µA, I_SD < 1µA,
ThinSOT™ Package
V_IN: 3.6V to 25V, V_OUT(MIN) = 0.8V, I_Q = 2.5mA, I_SD < 10µA,
3mm × 3mm DFN10
V_IN: 3.3V to 60V, V_OUT(MIN) = 1.25V, I_Q = 100µA, I_SD < 1µA,
3mm × 3mm DFN10, TSSOP16E
V_IN: 4V to 40V, V_OUT(MIN) = 1.2V, I_Q = 26µA, I_SD < 1µA,
2mm × 3mm DFN8, ThinSOT
V_IN: 3.6V to 38V, V_OUT(MIN) = 0.78V, I_Q = 70µA, I_SD < 1µA,
3mm × 3mm DFN10, MSOP10E
22 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
3632fc
LT 1010 REV C • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2009