Datasheet

LTC3407-3
16
34073fb
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
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FAX: [phone]
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www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2006
LT 0809 REV B • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
2mm Height Lithium-Ion Single Inductor Buck-Boost Regulator and a Buck Regulator
Effi ciency vs Load Current Effi ciency vs Load Current
RUN2 V
IN
V
IN
2.8V TO 4.2V
V
OUT2
3.3V
200mA
V
OUT1
1.8V
800mA
RUN1
POR
SW1
V
OUT1
GND
V
OUT2
SW2
MODE/SYNC
LTC3407-3
C1
10μF
R5
100k
POWER-ON
RESET
L1
2.2μH
L2
10μH
C3
10μF
C6
47μF
C2
10μF
34073 TA04a
+
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
LOAD CURRENT (mA)
1
EFFICIENCY (%)
90
80
70
60
50
40
30
10 100 1000
34073 TA04b
V
OUT
= 3.3V
Burst Mode OPERATION
NO LOAD 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
34073 TA04c
V
OUT
= 1.8V
Burst Mode OPERATION
NO LOAD ON OTHER CHANNEL
4.2V
2.8V
3.6V
PART NUMBER DESCRIPTION COMMENTS
LT1940 Dual Output 1.4A(I
OUT
), Constant 1.1MHz,
High Effi ciency Step-Down DC/DC Converter
V
IN
: 3V to 25V, V
OUT(MIN)
= 1.2V, I
Q
= 2.5mA, I
SD
= <1μA,
TSSOP-16E Package
LTC3405/LTC3405A 300mA (I
OUT
), 1.5MHz,
Synchronous Step-Down DC/DC Converters
96% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 20μA,
I
SD
<1μA, ThinSOT™ Package
LTC3406/LTC3406B 600mA (I
OUT
), 1.5MHz,
Synchronous Step-Down DC/DC Converters
96% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 20μA,
I
SD
<1μA, ThinSOT Package
LT3407/LT3407-2 600mA/800mA, 1.5MHz
Dual Synchronous Step-Down DC/DC Converter
96% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 40μA,
I
SD
<1μA, MSE, DFN Package
LTC3411 1.25A (I
OUT
), 4MHz,
Synchronous Step Down DC/DC Converter
95% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 60μA,
I
SD
<1μA, MSOP-10 Package
LTC3412 2.5A (I
OUT
), 4MHz,
Synchronous Step Down DC/DC Converter
95% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 60μA,
I
SD
<1μA, TSSOP-16E Package
LTC3414 4A (I
OUT
), 4MHz,
Synchronous Step Down DC/DC Converter
95% Effi ciency, V
IN
: 2.25V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 64μA,
I
SD
<1μA, TSSOP-28E Package
LTC3417/LTC3417A 1.5A (I
OUT
), 4MHz,
Synchronous Step Down DC/DC Converter
V
IN
: 2.2V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 125μA,
I
SD
<1μA, DFN, TSSOP Packages
LTC3440 600mA (I
OUT
), 2MHz,
Synchronous Buck-Boost DC/DC Converter
95% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 2.5V, I
Q
= 25μA,
I
SD
<1μA, MSOP-10 Package
LTC3548/LTC3548-1
LTC3548-2
2.25MHz/400mA/800mA (I
OUT
) Dual
Synchronous Step-Down DC/DC Converter
95% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 40mA,
I
SD
<1μA, MSOP-10, DFN-10 Packages
ThinSOT is a trademark of Linear Technology Corporation.