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LTC3407-2
16
34072fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
LINEAR TECHNOLOGY CORPORATION 2004
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LTC1878
600mA (IOUT), 550kHz,
95% Efficiency, VIN: 2.7V to 6V, VOUT(MIN) = 0.8V, IQ = 10μA,
Synchronous Step-Down DC/DC Converter
ISD <1μA, MSOP-8, Package
LT1940
Dual Output 1.4A(IOUT), Constant 1.1MHz,
VIN: 3V to 25V, VOUT(MIN) = 1.2V, IQ = 2.5mA, ISD = <1μA,
High Efficiency Step-Down DC/DC Converter
TSSOP-16E Package
LTC3252
Dual 250mA (IOUT), 1MHz, Spread Spectrum
88% Efficiency, VIN: 2.7V to 5.5V, VOUT(MIN) = 0.9V to 1.6V,
Inductorless Step-Down DC/DC Converter
IQ = 60μA, ISD < 1μA, DFN-12 Package
LTC3405/LTC3405A
300mA (IOUT), 1.5MHz,
96% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.8V, IQ = 20μA,
Synchronous Step-Down DC/DC Converters
ISD <1μA, ThinSOT Package
LTC3406/LTC3406B
600mA (IOUT), 1.5MHz,
96% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.6V, IQ = 20μA,
Synchronous Step-Down DC/DC Converters
ISD <1μA, ThinSOT Package
LT3407
600mA, 1.5MHz
96% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.6V, IQ = 40μA,
Dual Synchronous Step-Down DC/DC Converter
ISD <1μA, MSE, DFN Package
LTC3411
1.25A (IOUT), 4MHz,
95% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.8V, IQ = 60μA,
Synchronous Step Down DC/DC Converter
ISD <1μA, MSOP-10 Package
LTC3412
2.5A (IOUT), 4MHz,
95% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.8V, IQ = 60μA,
Synchronous Step Down DC/DC Converter
ISD <1μA, TSSOP-16E Package
LTC3414
4A (IOUT), 4MHz,
95% Efficiency, VIN: 2.25V to 5.5V, VOUT(MIN) = 0.8V, IQ = 64μA,
Synchronous Step Down DC/DC Converter
ISD <1μA, TSSOP-28E Package
LTC3440
600mA (IOUT), 2MHz,
95% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 2.5V, IQ = 25μA,
Synchronous Buck-Boost DC/DC Converter
ISD <1μA, MSOP-10 Package
LT 0707 REV A PRINTED IN USA
LOAD CURRENT (mA)
1
EFFICIENCY
(%)
90
80
70
60
50
40
30
10
100
1000
3407 TA05
VOUT = 3.3V
Burst Mode OPERATION
NO LOD ON OTHER CHANNEL
4.2V
2.8V
3.6V
LOAD CURRENT (mA)
1
EFFICIENCY
(%)
100
95
90
85
80
75
70
65
60
10
100
1000
3407 TA06
VOUT = 1.8V
Burst Mode OPERATION
NO LOAD ON OTHER CHANNEL
4.2V
2.8V
3.6V
Efficiency vs Load Current
RUN2
VIN
VIN = 2.8V
TO 4.2V
VOUT2 = 3.3V
AT 200mA
VOUT1 = 1.8V
AT 800mA
RUN1
POR
SW1
VFB1
GND
VFB2
SW2
MODE/SYNC
LTC3407-2
C1
10
μF
R5
100k
POWER-ON
RESET
C4, 22pF
C5, 22pF
L1
2.2
μH
L2
10
μH
R4
887k
R2
604k
R1
301k
R3
196k
C3
10
μF
C6
47
μF
C2
10
μF
3407 TA04
+
M1
D1
C1, C2, C3: TAIYO YUDEN JMK316BJ106ML
C6: SANYO 6TPB47M
D1: PHILIPS PMEG2010
L1: MURATA LQH32CN2R2M33
L2: TOKO A914BYW-100M (D52LC SERIES)
M1: SILICONIX Si2302
2mm Height Lithium-Ion Single Inductor Buck-Boost Regulator and a Buck Regulator
U
TYPICAL APPLICATIO