LTC3548-2 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
LTC3548-2
Linear Technology
'LTC3548-2' PDF : 16 Pages View PDF
LTC3548-2
TYPICAL APPLICATION
2mm Height Lithium-Ion Single Inductor Buck-Boost Regulator and a Buck Regulator
VOUT2
3.3V
100mA
D1
M1
+ C6
22μF
C3
4.7μF
VIN
2.8V TO 4.2V
C1
10μF
L2
15μH
C5 22pF
RUN2 VIN RUN1
MODE/SYNC
POR
LTC3548-2
SW2
SW1
R4
887k
VFB2
R3
196k
VOUT1
GND
R5
100k
POWER-ON
RESET
L1
2.2μH
VOUT1
1.8V
800mA
C2
10μF
35482 TA03a
C1, C2: TAIYO YUDEN JMK316BJ106ML
C3: MURATA GRM21BR60J475KA11B
C6: KEMET C1206C226K9PAC
D1: PHILIPS PMEG2010
L1: MURATA LQH32CN2R2M33
L2: TOKO A914BYW-150M (D52LC SERIES)
M1: SILICONIX Si2302DS
Efficiency vs Load Current
90
80
70
4.2V
3.6V
60
2.8V
50
40 VOUT = 3.3V
Burst Mode OPERATION
NO LOAD ON OTHER CHANNEL
30
1
10
100
LOAD CURRENT (mA)
1000
35482 TA03b
Efficiency vs Load Current
100
95
2.8V
90
85
4.2V
3.6V
80
75
70
65
VOUT = 1.8V
Burst Mode OPERATION
NO LOAD ON OTHER CHANNEL
60
1
10
100
LOAD CURRENT (mA)
1000
3548 TA03c
RELATED PARTS
PART NUMBER
LTC1878
LT1940
LTC3405/LTC3405A
LTC3406/LTC3406B
LT3407/LT3407-2
LTC3410/LTC3410B
LTC3411
LTC3412/LTC3412A
LTC3414
LTC3548/LTC3548-1
DESCRIPTION
600mA (IOUT), 550kHz, Synchronous Step-Down
DC/DC Converter
Dual Output 1.4A (IOUT), Constant 1.1MHz, High
Efficiency Step-Down DC/DC Converter
300mA (IOUT), 1.5MHz, Synchronous Step-Down
DC/DC Converters
600mA (IOUT), 1.5MHz, Synchronous Step-Down
DC/DC Converters
600mA/1.5MHz, 800mA/2.25MHz Dual Synchronous
Step-Down DC/DC Converter
300mA, 2.25MHz Synchronous Step-Down
DC/DC Converters
1.25A (IOUT), 4MHz, Synchronous Step-Down
DC/DC Converter
2.5A (IOUT), 4MHz, Synchronous Step-Down
DC/DC Converter
4A (IOUT), 4MHz, Synchronous Step-Down
DC/DC Converter
800mA/400mA (IOUT), 2.25MHz, Dual Synchronous
Step-Down DC/DC Converter
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
COMMENTS
95% Efficiency, VIN: 2.7V to 6V, VOUT(MIN) = 0.8V, IQ = 10μA,
ISD < 1μA, MSOP-8 Package
VIN: 3V to 25V, VOUT(MIN) = 1.2V, IQ = 2.5mA, ISD = < 1μA,
TSSOP-16E Package
96% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.8V, IQ = 20μA,
ISD < 1μA, ThinSOT Package
96% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.6V, IQ = 20μA,
ISD < 1μA, ThinSOT Package
96% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.6V, IQ = 40μA,
ISD < 1μA, MSE, DFN Package
95% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.8V, IQ = 26μA,
ISD < 1μA, SC70 Package
95% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.8V, IQ = 60μA,
ISD < 1μA, MSOP-10 Package
95% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.8V, IQ = 60μA,
ISD < 1μA, TSSOP-16E Package
95% Efficiency, VIN: 2.25V to 5.5V, VOUT(MIN) = 0.8V, IQ = 64μA,
ISD < 1μA, TSSOP-28E Package
95% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.6V, IQ = 40μA,
ISD < 1μA, MSE, DFN-10 Packages
35482fb
LT 0709 REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2006
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