LTC3440 Datasheet, PDF (20/20 Pages) Linear Technology – Micropower Synchronous Buck-Boost DC/DC Converter

LTC3440
TYPICAL APPLICATIO
Li-Ion to 3.3V at 600mA Buck-Boost Converter
L1
10μH
V_IN = 2.8V TO 4.2V
3
SW1
4
SW2
7
LTC3440
6
V_IN
V_OUT
+
Li-Ion
8
SHDN/SS FB
2
C1 *
MODE/SYNC V_C
10μF ₁
R_T
GND
R_T
60.4k
9
C5 300pF
10
R3
5
15k
220pF
R1
340k ^2.2k
R2
200k
V_OUT
3.3V
600mA
C2
22μF
*1 = Burst Mode OPERATION
0 = FIXED FREQUENCY
C1: TAIYO YUDEN JMK212BJ106MG
C2: TAIYO YUDEN JMK325BJ226MM
L1: SUMIDA CDRH4D28-100
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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Buck-Boost DC/DC Converter
ThinSOT is a trademark of Linear Technology Corporation.
20 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
COMMENTS
90% Efficiency, V_IN: 0.9V to 10V, V_OUT(MIN) = 34V, I_Q = 3mA,
I_SD = <1μA, ThinSOT^TM Package
90% Efficiency, V_IN: 1.6V to 18V, V_OUT(MIN) = 35V, I_Q = 1.8mA,
I_SD = <1μA, MS10 Package
95% Efficiency, V_IN: 2.7V to 10V, V_OUT(MIN) = 0.8V, I_Q = 10μA,
I_SD = <1μA, MS8 Package
95% Efficiency, V_IN: 2.7V to 6V, V_OUT(MIN) = 0.8V, I_Q = 10μA,
I_SD = <1μA, MS8 Package
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
95% Efficiency, V_IN: 2.7V to 6V, V_OUT(MIN) = 0.8V, I_Q = 20μA,
I_SD = <1μA, ThinSOT Package
95% 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) = 0.8V, I_Q = 60μA,
I_SD = <1μA, MS10 Package
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
3440fb
LT 0507 REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2001