LTC3440_15 Datasheet, PDF (20/20 Pages) Linear Technology – Micropower Synchronous Buck-Boost DC/DC Converter

LTC3440
Typical Application
Li-Ion to 3.3V at 600mA Buck-Boost Converter
L1
10µH
3
SW1
4
SW2
V_IN = 2.7V TO 4.2V
7
LTC3440
6
V_IN
V_OUT
R1
340k
+
Li-Ion
8
SHDN/SS
9
FB
C5 1.5nF
C1 *
10µF
2
10
MODE/SYNC V_C
1
R_T
5
GND
R3
15k _R2
R_T
200k
60.4k
V_OUT
3.3V
600mA
C2
22µF
*1 = Burst Mode OPERATION
0 = FIXED FREQUENCY
C1: TAIYO YUDEN JMK212BJ106MG
C2: TAIYO YUDEN JMK325BJ226MM
L1: SUMIDA CDRH6D38-100
3440 TA01
Efficiency
100
90 _{Burst Mode}
80 ^OPERATION
70
V_IN = 4.2V
60
50
V_IN = 3.3V
40
30
20
10
0
0.1
1.0
10
100
OUTPUT CURRENT (mA)
1000
3440 TA05
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PART NUMBER
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LTC3441/LTC3443
DESCRIPTION
COMMENTS
550mA(I_SW), 1.4MHz, High Efficiency Step-Up
DC/DC Converter
90% Efficiency, V_IN: 0.9V to 10V, V_OUT(MIN) = 34V, I_Q = 3mA,
I_SD = <1µA, ThinSOT™ Package
1.5A(I_SW), 1.25MHz, High Efficiency Step-Up DC/ 90% Efficiency, V_IN: 1.6V to 18V, V_OUT(MIN) = 35V, I_Q = 1.8mA,
DC Converter
I_SD = <1µA, MS10 Package
600mA(I_OUT), 550kHz, Synchronous Step-Down 95% Efficiency, V_IN: 2.7V to 10V, V_OUT(MIN) = 0.8V, I_Q = 10µA,
DC/DC Converter
I_SD = <1µA, MS8 Package
600mA(I_OUT), 550kHz, Synchronous Step-Down 95% Efficiency, V_IN: 2.7V to 6V, V_OUT(MIN) = 0.8V, I_Q = 10µA,
DC/DC Converter
I_SD = <1µA, MS8 Package
1.2A(I_OUT), 550kHz, Synchronous Step-Down DC/
DC Converter
1.5A(I_SW), 1.25MHz, High Efficiency Step-Up DC/
DC Converter
600mA(I_SW), 1.2MHz, Synchronous Step-Up DC/
DC Converter
1A(I_SW), 3MHz, Synchronous Step-Up
DC/DC Converter
2A(I_SW), 3MHz, Synchronous Step-Up
DC/DC Converter
95% Efficiency, V_IN: 2.7V to 10V, V_OUT(MIN) = 0.8V, I_Q = 15µA,
I_SD = <1µA, TSSOP16 Package
90% Efficiency, V_IN: 3V to 25V, V_OUT(MIN) = 35V, I_Q = 0.9mA,
I_SD = 6µA, MS8E Package
92% Efficiency, V_IN: 0.85V to 5V, V_OUT(MIN) = 5V, I_Q = 19µA/300µA,
I_SD = <1µA, ThinSOT Package
97% Efficiency, V_IN: 0.5V to 5V, V_OUT(MIN) = 6V, I_Q = 38µA,
I_SD = <1µA, MS10 Package
97% Efficiency, V_IN: 0.5V to 5V, V_OUT(MIN) = 6V, I_Q = 38µA,
I_SD = <1µA, MS10 Package
300mA(I_OUT), 1.5MHz, Synchronous Step-Down 95% Efficiency, V_IN: 2.7V to 6V, V_OUT(MIN) = 0.8V, I_Q = 20µA,
DC/DC Converter
I_SD = <1µA, ThinSOT Package
600mA(I_OUT), 1.5MHz, Synchronous Step-Down 95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.6V, I_Q = 20µA,
DC/DC Converter
I_SD = <1µA, ThinSOT Package
1.25A(I_OUT), 4MHz, Synchronous Step-Down DC/ 95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.8V, I_Q = 60µA,
DC Converter
I_SD = <1µA, MS10 Package
2.5A(I_OUT), 4MHz, Synchronous Step-Down DC/
DC Converter
1.2A(I_OUT), 1MHz/0.6MHz, Micropower
Synchronous Buck-Boost DC/DC Converter
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.8V, I_Q = 60µA,
I_SD = <1µA, TSSOP16E Package
95% Efficiency, V_IN: 2.4V to 5.5V, V_OUT(MIN): 2.4V to 5.25V, I_Q = 25µA,
I_SD = <1µA, DFN Package
20 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 950_Fo3_r5_m-7_o4_re1_i7_{nformation www.linear.com/LTC3440}
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3440fc
LT 0814 REV C • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2001