Datasheet

LTC3101
34
3101fb
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2008
LT 0410 REV B • PRINTED IN USA
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LTC3455 Dual DC/DC Converter with USB Power Manager and Li-Ion
Battery Charger
V
IN
: 3V to 5.5V, Transition Between Inputs, I
Q
= 110A, I
SD
< 2A,
QFN Package
LTC3456 2-Cell, Multi-Output DC/DC Converter with USB Power
Manager
V
IN
: 1.8V to 5.5V, Dual DC/DC Converter and Hot Swap Outputs,
Seamless Transition Between Inputs, I
Q
= 180A, I
SD
< 1A, QFN Package
LTC3555 High Effi ciency USB Power Manager, Li-Ion/Polymer Battery
Charger and Triple Step-Down DC/DC Converters
V
IN
: 2.7V to 5.5V, 1.5A Maximum Charge Current, 180m Ideal Diode,
Two 400mA and One 1A Buck DC/DC, I
Q
= 20A, QFN Package
LTC3556 High Effi ciency USB Power Manager with Dual Step-Down
and Buck-Boost DC/DC Converters
V
IN
: 2.7V to 5.5V, 1.5A Maximum Charge Current, 1A Buck-Boost DC/DC,
Dual 400mA Step-Down DC/DC, I
Q
= 20A, QFN Package
LTC3127 1A (I
OUT
), 1.2MHz Buck-Boost DC/DC Converter with
Programmable Input Current Limit
96% Effi ciency, V
IN
: 1.8V to 5.5V, V
OUT
: 1.8V to 5.25V, I
Q
= 35A,
I
SD
< 4A, MSOP and DFN Packages
LTC3520 1A (I
OUT
) Synchronous Buck-Boost and 600mA Step-Down
DC/DC Converters with LDO Controller
96% Effi ciency, V
IN
: 2.2V to 5.5V, Buck-Boost V
OUT
: 2.2V to 5.25V,
Step-Down V
OUT
as low as 0.8V, I
Q
= 55A, I
SD
< 1A, QFN Package
LTC3521 1A (I
OUT
) Synchronous Buck-Boost and Dual 600mA
Step-Down DC/DC Converters
95% Effi ciency, V
IN
: 1.8V to 5.5V, Buck-Boost V
OUT
: 1.8V to 5.25V,
Step-Down V
OUT
as low as 0.6V, I
Q
= 30A, I
SD
< 2A, QFN Package
LTC3533 2A (I
OUT
), 2MHz Synchronous Buck-Boost DC/DC Converter 96% Effi ciency, V
IN
: 1.8V to 5.5V, V
OUT
: 1.8V to 5.25V, I
Q
= 40A,
I
SD
< 1A , DFN Package
TYPICAL APPLICATION
BAT1
USB1
C
RS
PWRKEY
PWRON
PBSTAT
R1
50k
R2
50k
C1-C5: MURATA GRM31CR71A106KA01
L1, L2: TAIYO YUDEN NR3010T4R7M
L3: COILCRAFT LPS4018-472ML
RESET
PWM
USB2
FB3
LDO
SW2
FB2
HSO
MAX
ENA3
ENA2
ENA1
C5
10μF
C4
10μF
2 AA
CELLS
USB POWER
4.3V TO 5.5V
C3
10μF
R8
1M
V
OUT3
= 3.3V
300mA FOR V
IN
≥ 1.8V
800mA FOR V
IN
≥ 3V
R7
221k
L3
4.7μH
C6
4.7μF
TRACKING OUTPUT
200mA
Hot Swap OUTPUT
3.3V
100mA
C8
4.7μF
C7
4.7μF
1.8V
50mA
V
OUT2
1.8V
350mA
V
OUT1
1.5V
350mA
C2
10μF
R6
221k
R5
110k
L2
4.7μH
SW1
FB1
C1
10μF
C10
22pF
C9
22pF
3101 TA02a
R4
221k
R3
147k
L1
4.7μH
0.22μF
ON/OFF
BAT2 SW3A
LTC3101
GND
SW3B OUT3
+
WALL ADAPTER
4.0V TO 5.5V
μP
V
OUT1
2 AA Cell/USB/Wall Adapter Power Supply with Six Output Rails and Pushbutton On/Off