Datasheet

LTC3407-2
16
sn34072 34072fs
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 2004
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PART NUMBER DESCRIPTION COMMENTS
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Q
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SD
<1µA, MSOP-8, Package
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= <1µA,
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Q
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SD
< 1µA, DFN-12 Package
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OUT
), 1.5MHz, 96% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 20µA,
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<1µA, ThinSOT Package
LTC3406/LTC3406B 600mA (I
OUT
), 1.5MHz, 96% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 20µA,
Synchronous Step-Down DC/DC Converters I
SD
<1µA, ThinSOT Package
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: 2.5V to 5.5V, V
OUT(MIN)
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Q
= 40µA,
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SD
<1µA, MSE, DFN Package
LTC3411 1.25A (I
OUT
), 4MHz, 95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 60µA,
Synchronous Step Down DC/DC Converter I
SD
<1µA, MSOP-10 Package
LTC3412 2.5A (I
OUT
), 4MHz, 95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 60µA,
Synchronous Step Down DC/DC Converter I
SD
<1µA, TSSOP-16E Package
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), 4MHz, 95% Efficiency, V
IN
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SD
<1µA, TSSOP-28E Package
LTC3440 600mA (I
OUT
), 2MHz, 95% Efficiency, V
IN
: 2.5V to 5.5V, V
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= 25µA,
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SD
<1µA, MSOP-10 Package
LT/TP 0304 1K • PRINTED IN USA
LOAD CURRENT (mA)
1
EFFICIENCY (%)
90
80
70
60
50
40
30
10 100 1000
3407 TA05
V
OUT
= 3.3V
Burst Mode OPERATION
NO LOD 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
3407 TA06
V
OUT
= 1.8V
Burst Mode OPERATION
NO LOAD ON OTHER CHANNEL
4.2V
2.8V
3.6V
Efficiency vs Load Current
Efficiency vs Load Current
RUN2 V
IN
V
IN
= 2.8V
TO 4.2V
V
OUT2
= 3.3V
AT 200mA
V
OUT1
= 1.8V
AT 800mA
RUN1
POR
SW1
V
FB1
GND
V
FB2
SW2
MODE/SYNC
LTC3407-2
C1
10µF
R5
100k
POWER-ON
RESET
C4, 22pF
C5, 22pF
L1
2.2µH
L2
10µH
R4
887k
R2
604k
R1
301k
R3
196k
C3
10µF
C6
47µF
C2
10µF
3407 TA04
+
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
2mm Height Lithium-Ion Single Inductor Buck-Boost Regulator and a Buck Regulator
U
TYPICAL APPLICATIO