LTC3407-2_15 Datasheet, PDF (16/16 Pages) Linear Technology – Dual Synchronous, 800mA, 2.25MHz Step-Down DC/DC Regulator

LTC3407-2
TYPICAL APPLICATION
2mm Height Lithium-Ion Single Inductor Buck-Boost Regulator and a Buck Regulator
V_OUT2 = 3.3V
AT 200mA
+ _C6
47μF
D1
M1
C3
10μF
V_IN = 2.8V
TO 4.2V
C1
10μF
L2
10μH
C5, 22pF
RUN2 V_IN RUN1
MODE/SYNC
POR
LTC3407-2
SW2
SW1
R5
100k
POWER-ON
L1
RESET
2.2μH
V_OUT1 = 1.8V
C4, 22pF
AT 800mA
V_FB2
V_FB1
R4 _R3
887k _196k
GND
R1
R2
301k ^604k
C2
10μF
3407 TA04
C1, C2, C3: TAIYO YUDEN JMK316BJ106ML
C6: SANYO 6TPB47M
D1: PHILIPS PMEG2010
L1: MURATA LQH32CN2R2M33
L2: TOKO A914BYW-100M (D52LC SERIES)
M1: SILICONIX Si2302
Efficiency vs Load Current
90
80
4.2V
70
60
3.6V
50
2.8V
40 V_OUT = 3.3V
Burst Mode OPERATION
NO LOAD ON OTHER CHANNEL
30
1
10
100
LOAD CURRENT (mA)
1000
3407 TA05
Efficiency vs Load Current
100
95
2.8V
90
85
4.2V
3.6V
80
75
70
65
V_OUT = 1.8V
Burst Mode OPERATION
NO LOAD ON OTHER CHANNEL
60
1
10
100
LOAD CURRENT (mA)
1000
3407 TA06
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PART NUMBER DESCRIPTION
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600mA, 1.5MHz Dual Synchronous Step-Down DC/DC
Converter
LTC3411
1.25A (I_OUT), 4MHz, Synchronous Step Down DC/DC
Converter
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2.5A (I_OUT), 4MHz, Synchronous Step Down DC/DC Converter
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600mA (I_OUT), 2MHz, Synchronous Buck-Boost DC/DC
Converter
ThinSOT is a trademark of Linear Technology Corporation.
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
COMMENTS
95% Efficiency, V_IN: 2.7V to 6V, V_OUT(MIN) = 0.8V, I_Q = 10μA,
I_SD <1μA, MSOP-8, Package
V_IN: 3V to 25V, V_OUT(MIN) = 1.2V, I_Q = 2.5mA, I_SD = <1μA,
TSSOP-16E Package
88% Efficiency, V_IN: 2.7V to 5.5V, V_OUT(MIN) = 0.9V to 1.6V,
I_Q = 60μA, I_SD < 1μA, DFN-12 Package
96% 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
96% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.6V, I_Q = 40μA,
I_SD <1μA, MSE, DFN Package
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.8V, I_Q = 60μA,
I_SD <1μA, MSOP-10 Package
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.8V, I_Q = 60μA,
I_SD <1μA, TSSOP-16E Package
95% Efficiency, V_IN: 2.25V to 5.5V, V_OUT(MIN) = 0.8V, I_Q = 64μA,
I_SD <1μA, TSSOP-28E Package
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 2.5V, I_Q = 25μA,
I_SD <1μA, MSOP-10 Package
34072fc
LT 0809 REV C • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2004