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| LTC3547 Datasheet, PDF (16/16 Pages) Linear Technology – Dual Monolithic 300mA Synchronous Step-Down Regulator | |||
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LTC3547
TYPICAL APPLICATIO
VIN
2.5V TO 5.5V
VOUT2
1.8V AT 300mA
Dual 300mA Buck Converter
C1
4.7µF
L2
4.7µH
CF2, 10pF
RUN2 VIN RUN1
LTC3547
SW2
SW1
L1
4.7µH
CF1, 10pF
VOUT1
2.5V AT 300mA
COUT2 R4
4.7µF 562k
VFB2
VFB1
R3
GND
280k
R1 R2
280k 887k
COUT1
4.7µF
3547 TA02
C1, C2, C3: TAIYO YUDEN JMK316BJ475ML
L1, L2: MURATA LQH32CN4R7M33
1.8V/1.2V Dual 300mA Buck Converter
VIN
2.5V TO 5.5V C1
4.7µF
VOUT2
1.2V AT 300mA
L2
4.7µH
COUT2
4.7µF
RUN2 VIN RUN1
SW2
SW1
LTC3547-1
VFB2
VFB1
GND
L1
4.7µH
C1, COUT1, COUT2: TAIYO YUDEN JMK316BJ475ML
L1, L2: MURATA LQH32CN4R7M33
VOUT1
1.8V AT 300mA
COUT1
4.7µF
3547 TA03
RELATED PARTS
PART NUMBER
DESCRIPTION
LTC3405/LTC3405A 300mA (IOUT), 1.5MHz, Synchronous Step-Down
DC/DC Converter
LTC3406/LTC3406B 600mA (IOUT), 1.5MHz, Synchronous Step-Down
DC/DC Converter
LTC3407/LTC3407-2 Dual 600mA/800mA (IOUT), 1.5MHz/2.25MHz,
Synchronous Step-Down DC/DC Converter
LTC3409
600mA (IOUT), 1.7MHz/2.6MHz, Synchronous
Step-Down DC/DC Converter
LTC3410/LTC3410B 300mA (IOUT), 2.25MHz, Synchronous Step-Down
DC/DC Converter
LTC3411
1.25A (IOUT), 4MHz, Synchronous Step-Down
DC/DC Converter
LTC3531/LTC3531-3/ 200mA (IOUT), 1.5MHz, Synchronous Buck-Boost
LTC3531-3.3
DC/DC Converter
LTC3532
500mA (IOUT), 2MHz, Synchronous Buck-Boost
DC/DC Converter
LTC3548/LTC3548-1/ Dual 400mA and 800mA (IOUT), 2.25MHz,
LTC3548-2
Synchronous Step-Down DC/DC Converter
ThinSOT is a trademark of Linear Technology Corporation
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 â FAX: (408) 434-0507 â www.linear.com
COMMENTS
95% Efï¬ciency, VIN: 2.5V to 5.5V, VOUT = 0.8V, IQ = 20µA,
ISD <1µA, ThinSOTTM Package
96% Efï¬ciency, VIN: 2.5V to 5.5V, VOUT = 0.6V, IQ = 20µA,
ISD <1µA, ThinSOT Package
95% Efï¬ciency, VIN: 2.5V to 5.5V, VOUT = 0.6V, IQ = 40µA,
ISD <1µA, MS10E, DFN Packages
96% Efï¬ciency, VIN: 1.6V to 5.5V, VOUT = 0.6V, IQ = 65µA,
ISD <1µA, DFN Package
95% Efï¬ciency, VIN: 2.5V to 5.5V, VOUT = 0.8V, IQ = 26µA, ISD <1µA,
SC70 Package
95% Efï¬ciency, VIN: 2.5V to 5.5V, VOUT = 0.8V, IQ = 60µA,
ISD <1µA, MS10, DFN Packages
95% Efï¬ciency, VIN: 1.8V to 5.5V, VOUT: 2V to 5V,
IQ = 16µA, ISD <1µA, ThinSOT, DFN Packages
95% Efï¬ciency, VIN: 2.4V to 5.5V, VOUT: 2.4V to 5.25V, IQ = 35µA,
ISD <1µA, MS10, DFN Packages
95% Efï¬ciency, VIN: 2.5V to 5.5V, VOUT = 0.6V, IQ = 40µA,
ISD <1µA, MS10E, DFN Packages
3547fa
LT 0906 REV A ⢠PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2006
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