LTC3620 Datasheet, PDF (16/16 Pages) Linear Technology – Ultralow Power 15mA Synchronous Step-Down Switching Regulator

LTC3620
TYPICAL APPLICATIONS
High Efficiency Low Power Step-Down Converter,
LTC3620-1 Internally Programmed, 1.1V_OUT
V_IN
2.9V TO 5.5V
V_IN
RUN LOBATB
1μF
CER
LTC3620-1
SW
FMIN/MODE V_FB
GND
LOBATB
1M
22μH
V_OUT
1.1V
2.2μF
CER
3620 TA04a
Efficiency vs Load Current
100
90
80
70
60
50
40
30
20
10
0
0.1
T_A = 25°C
V_OUT = 1.1V
FMIN/MODE = 0V
V_IN = 3V
V_IN = 3.6V
V_IN = 5.5V
1
10
LOAD CURRENT (mA)
3620 G21
100
90
80
70
60
50
40
30
20
10
0
2.5
Efficiency vs V_IN
T_A = 25°C
V_OUT = 1.1V
FMIN/MODE = 0V
I_OUT = 500μA
I_OUT = 1mA
I_OUT = 10mA
3.5
4.5
5.5
6.5
V_IN (V)
3620 TA04c
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PART NUMBER
DESCRIPTION
COMMENTS
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1.25A I_OUT, 4MHz, Synchronous Step-Down DC/DC Converter
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Dual 400mA/800mA I_OUT, 2.25MHz, Synchronous Step-Down
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50V, 20mA (I_OUT), Ultralow Quiescent Current Synchronous
Step-Down DC/DC Converter
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LTC3642-5
Step-Down DC/DC Converter
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.8V, I
Q ^{= 20μA, I}SD ^{< 1μA, ThinSOT Package}
96% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.6V,
I_Q = 20μA, I_SD < 1μA, ThinSOT Package
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.6V,
I_Q = 40μA, I_SD < 1μA, MS10E, DFN Packages
96% Efficiency, V_IN: 1.6V to 5.5V, V_OUT(MIN) = 0.6V,
I_Q = 65μA, I_SD < 1μA, DFN Package
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.8V,
I_Q = 26μA, I_SD < 1μA, SC70 Package
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.8V,
I_Q = 60μA, I_SD < 1μA, MS10, DFN Packages
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.6V,
I_Q = 40μA, I_SD < 1μA, MS10, DFN Packages
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.8V,
I_Q = 240μA, I_SD < 1μA, 3mm × 3mm DFN Package
V_IN: 4.5V to 45V (60V_MAX), V_OUT(MIN) = 0.8V,
I_Q = 12μA, I_SD < 1μA, 3mm × 3mm DFN Package, MSOP-8E
V_IN: 4.5V to 50V (60V_MAX), V_OUT(MIN) = 0.8V,
I_Q = 12μA, I_SD < 1μA, 3mm × 3mm DFN Package, MSOP-8E
V_IN: 4.5V to 45V (60V_MAX), V_OUT(MIN) = 0.8V,
I_Q = 12μA, I_SD < 1μA, 3mm × 3mm DFN Package, MSOP-8E
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
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3620f
LT 0809 • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2009