LTC3407A
16
3407afa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2007
LT 1008 REV A • 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
RUN/SS2 V
IN
V
IN
= 2.8V
TO 4.2V
V
OUT2
= 3.3V
AT 200mA
V
OUT1
= 1.8V
AT 600mA
RUN/SS1
POR
SW1
V
FB1
GND
V
FB2
SW2
MODE/SYNC
LTC3407A
C1
10µF
R5
100k
POWER-ON
RESET
C4, 22pF
L1
2.2µH
L2
10µH
R4
887k
R2
887k
R1
442k
R3
196k
C3
10µF
C6
47µF
C2
10µF
3407A TA07
+
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
0
EFFICIENCY (%)
30
20
10
70
60
50
40
90
80
10 100 1000
3407A TA08
2.8V
V
OUT
= 3.3V
Burst Mode OPERATION
NO LOAD ON OTHER CHANNEL
4.2V
3.6V
LOAD CURRENT (mA)
1
0
EFFICIENCY (%)
30
20
10
70
60
50
40
100
90
80
10 100 1000
3407A TA09
2.8V
V
OUT
= 1.8V
Burst Mode OPERATION
NO LOAD ON OTHER CHANNEL
4.2V
3.6V
PART NUMBER DESCRIPTION COMMENTS
LTC3405/LTC3405A 300mA (I
OUT
), 1.5MHz,
Synchronous Step-Down DC/DC Converter
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 Converter
96% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 20µA,
I
SD
<1µA, ThinSOT Package
LTC3407/LTC3407-2
LTC3407-3/LTC3407-4
600mA/800mA (I
OUT
), 1.5MHz/2.25MHz,
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, MS10E Package, DFN Package
LTC3410/LTC3410B 300mA (I
OUT
), 2.25MHz,
Synchronous Step-Down DC/DC Converter in SC70
96% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 26µA,
I
SD
<1µA, SC70 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/LTC3412A 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
LTC3440/LTC3441 600mA/1.2A (I
OUT
), 2MHz/1MHz,
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/DFN Package
LTC3548/
LTC3548-1/LTC3548-2
400mA/800mA (I
OUT
), 2.25MHz,
Dual Synchronous Step-Down DC/DC Converter
95% Effi ciency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 40µA,
I
SD
<1µA, MS10E Package/DFN Package
