Linear Technology LT3480, Manual

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LT3480
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3480fb
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com ©
LINEAR TECHNOLOGY CORPORATION 2008
LT 0308 REV B • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
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
V
IN
: 3.3V to 80V, V
OUT(MIN)
= 1.25V, I
Q
= 100μA, I
SD
<1μA, 10-Pin 3mm x 3mm
DFN and 16-Pin TSSOP Packages
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, 6-Pin 2mm x 3mm DFN
Package
LT1976/LT1977 60V, 1.2A (I
OUT
), 200kHz/500kHz, High Effi ciency
Step-Down DC/DC Converter with Burst Mode
V
IN
: 3.3V to 60V, V
OUT(MIN)
= 1.2V, I
Q
= 100μA, I
SD
<1μA, 16-Pin TSSOP Package
LT1767 25V, 1.2A (I
OUT
), 1.1MHz, High Effi ciency
Step-Down DC/DC Converter
V
IN
: 3V to 25V, V
OUT(MIN)
= 1.2V, 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)
= 1.2V, I
Q
= 3.8mA, I
SD
<30μA, 16-Pin TSSOP
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)
= 1.2V, I
Q
= 2.5mA, I
SD
= 25μA, 16-Pin TSSOP
Package
LT3434/LT3435 60V, 2.4A (I
OUT
), 200/500kHz, High Effi ciency
Step-Down DC/DC Converter with Burst Mode
V
IN
: 3.3V to 60V, V
OUT(MIN)
= 1.2V, I
Q
= 100μA, I
SD
<1μA, 16-Pin TSSOP Package
LT3481 36V, 2A (I
OUT
), 2.8MHz, High Effi ciency
Step-Down DC/DC Converter with Burst Mode
V
IN
: 3.6V to 34V, V
OUT(MIN)
= 1.26V, I
Q
= 50μA, I
SD
<1μA, 10-Pin 3mm x 3mm
DFN and 10-Pin MSOP Packages
LT3684 36V, 2A (I
OUT
), 2.8MHz, High Effi ciency
Step-Down DC/DC Converter
V
IN
: 3.6V to 34V, V
OUT(MIN)
= 1.26V, I
Q
= 1.5mA, I
SD
<1μA, 10-Pin 3mm x 3mm
DFN and 10-Pin MSOP Packages
SW
FB
V
C
PG
RT
V
IN
BD
V
IN
3.6V TO 27V
V
OUT
1.2V
2A
4.7μF
0.47μF
47μF
f = 500kHz
D: DIODES INC. DFLS240L
L: TAIYO YUDEN NP06DZB3R3M
D
16.2k
68.1k
L
3.3μH
GND
330pF
ON OFF
LT3480
3480 TA09
RUN/SS BOOST
SYNC
100k
52.3k
1.2V Step-Down Converter