Datasheet

LT3481
24
3481fc
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
FAX: (408) 434-0507
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2006
LT 0809 REV C • PRINTED IN USA
SW
BIAS
FB
V
C
PG
RT
V
IN
BD
V
IN
3.6V TO 27V
V
OUT
1.265V
2A
4.7μF
0.47μF
47μF
f = 500kHz
D: DIODES INC. DFLS240L
L: TAIYO YUDEN NP06DZB3R3M
D
13k
105k
L
3.3μH
GND
330pF
ON OFF
LT3481
3481 TA10
RUN/SS BOOST
1.265V Step-Down Converter
TYPICAL APPLICATION
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LT1933 500mA (I
OUT
), 500kHz Step-Down Switching
Regulator in SOT-23
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 1.2V, I
Q
= 1.6mA, I
SD
<1μA, ThinSOT™ Package
LT3437 60V, 400mA (I
OUT
), MicroPower Step-Down
DC/DC Converter with Burst Mode Operation
V
IN
: 3.3V to 80V, V
OUT(MIN)
= 1.25V, I
Q
= 100μA, I
SD
<1μA, DFN Package
LT1936 36V, 1.4A (I
OUT
), 500kHz High Effi ciency
Step-Down DC/DC Converter
V
IN
: 3.6V to 36V, V
OUT(MIN)
= 1.2V, I
Q
= 1.9mA, I
SD
<1μA, MS8E Package
LT3493 36V, 1.2A (I
OUT
), 750kHz High Effi ciency
Step-Down DC/DC Converter
V
IN
: 3.6V to 40V, V
OUT(MIN)
= 0.8V, I
Q
= 1.9mA, I
SD
<1μA, DFN Package
LT1976/LT1977 60V, 1.2A (I
OUT
), 200kHz/500kHz, High Effi ciency
Step-Down DC/DC Converter with Burst Mode
Operation
V
IN
: 3.3V to 60V, V
OUT(MIN)
= 1.20V, I
Q
= 100μA, I
SD
<1μA, TSSOP16E Package
LT1767 25V, 1.2A (I
OUT
), 1.1MHz, High Effi ciency
Step-Down DC/DC Converter
V
IN
: 3.0V to 25V, V
OUT(MIN)
= 1.20V, I
Q
= 1mA, I
SD
<6μA, MS8E Package
LT1940 Dual 25V, 1.4A (I
OUT
), 1.1MHz, High Effi ciency
Step-Down DC/DC Converter
V
IN
: 3.6V to 25V, V
OUT(MIN)
= 1.20V, I
Q
= 3.8mA, I
SD
<30μA, TSSOP16E Package
LT1766 60V, 1.2A (I
OUT
), 200kHz, High Effi ciency
Step-Down DC/DC Converter
V
IN
: 5.5V to 60V, V
OUT(MIN)
= 1.20V, I
Q
= 2.5mA, I
SD
= 25μA, TSSOP16E Package
LT3434/LT3435 60V, 2.4A (I
OUT
), 200/500kHz, High Effi ciency
Step-Down DC/DC Converter with Burst Mode
Operation
V
IN
: 3.3V to 60V, V
OUT(MIN)
= 1.20V, I
Q
= 100μA, I
SD
<1μA, TSSOP16E Package
ThinSOT is a trademark of Linear Technology Corporation.