LTC3633A-2 Datasheet, PDF (28/28 Pages) Linear Technology – Dual Channel 3A, 20V Monolithic Synchronous Step-Down Regulator

LTC3633A-2/LTC3633A-3
TYPICAL APPLICATION
2.5V Regulator with Battery Backup
2 CELL Li-Ion
BATTERY
5V TO 20V
MAIN SUPPLY
5V TO 20V
Q3
Q1 ^20k
22μF
Q4
Q2 _20k
22μF
274k
309k
100k
100k
20k
C2
2.2μF
13k
13k
200pF
200pF 324k
PV_IN2
SV_IN
1μF
LTC3633A-2
PGOOD2
PV_IN1
20k
BOOST1
RUN2
SW1
RUN1
BOOST2
INTV_CC
PHMODE
MODE/SYNC
PGOOD1
ITH1
ITH2
RT
SW2
V_ON1
V_ON2
V_FB2
V_FB1
SGND PGND
Q1, Q2: VISHAY SILICONIX P-CHANNEL MOSFET SI4953ADY
Q3, Q4: ROHM SEMICONDUCTOR NPN TRANSISTOR IMX1T110
0.1μF _2.2μH
0.1μF _2.2μH
V_OUT
2.5V
AT 6A
C_OUT
47μF
×2
84.5k
604Ω
26.1k
3633a23 TA06
RELATED PARTS
PART
NUMBER
LTC3633
LTC3605
LTC3603
LTC3602
LTC3601
LTC3605A
LTC3604
LT3626
DESCRIPTION
COMMENTS
15V, Dual 3A (I_OUT), 4MHz Synchronous Step-Down
DC/DC Converter
15V, 5A (I_OUT), 4MHz, Synchronous Step-Down DC/
DC Converter
15V, 2.5A (I_OUT), 3MHz, Synchronous Step-Down
DC/DC Converter
10V, 2.5A (I_OUT), 3MHz, Synchronous Step-Down
DC/DC Converter
15V, 1.5A (I_OUT), 4MHz, Synchronous Step-Down
DC/DC Converter
20V, 5A (I_OUT), 4MHz, Synchronous Step-Down
DC/DC Converter
15V, 2.5A (I_OUT), 4MHz, Synchronous Step-Down
DC/DC Converter
20V, 2.5A Synchronous Monolithic Step-Down
Regulator with Current and Temperature Monitoring
95% Efficiency, V_IN: 3.6V to 15V, V_OUT(MIN) = 0.6V, I_Q = 500μA, I_SD < 13μA,
4mm × 5mm QFN-28, TSSOP-28E
95% Efficiency, V_IN: 4V to 15V, V_OUT(MIN) = 0.6V, I_Q = 2mA, I_SD < 15μA,
4mm × 4mm QFN-24
95% Efficiency, V_IN: 4.5V to 15V, V_OUT(MIN) = 0.6V, I_Q = 75μA, I_SD < 1μA,
4mm × 4mm QFN-20, MSOP-16E
95% Efficiency, V_IN: 4.5V to 10V, V_OUT(MIN) = 0.6V, I_Q = 75μA, I_SD < 1μA,
3mm × 3mm QFN-16, MSOP-16E
95% Efficiency, V_IN: 4.5V to 15V, V_OUT(MIN) = 0.6V, I_Q = 300μA, I_SD < 1μA,
4mm × 4mm QFN-20, MSOP-16E
95% Efficiency, V_IN: 4V to 20V, V_OUT(MIN) = 0.6V, I_Q = 2mA, I_SD < 15μA,
4mm × 4mm QFN-24
95% Efficiency, V_IN: 3.6V to 15V, V_OUT(MIN) = 0.6V, I_Q = 300μA, I_SD < 15μA,
3mm × 3mm QFN-16, MSOP-16E
95% Efficiency, V_IN: 3.6V to 20V, V_OUT(MIN) = 0.6V, I_Q = 300μA, I_SD < 15μA,
3mm × 4mm QFN-20
28 LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
3633a23f
LT 0912 • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2012