LT3663
16
3663fc
For more information www.linear.com/LT3663
LINEAR TECHNOLOGY CORPORATION 2009
LT 0513 REV C • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/LT3663
relaTeD parTs
Typical applicaTion
3.3V Step-Down Converter
3663 TA03
LT3663
V
IN
V
IN
7.5V TO 36V
RUN
I
LIM
BOOST
SW
GND
C3
0.1µF
C1
4.7µF
D1: DIODES INC, DFLS240
L: TDK, VLCF5020T-4R7N1R7-1
C2
22µF
R1
316k
R
ILIM
28.7k
R2
100k
L
4.7µH
D1
I
SENSE
V
OUT
V
3.3V
1.2A
FB
ON OFF
Efficiency
OUTPUT CURRENT (A)
0.1
90
80
70
60
50
30
40
0.5 0.90.3 0.7 1.1
V
IN
= 15V
V
IN
= 8V
V
IN
= 30V
PART NUMBER DESCRIPTION COMMENTS
LT1766 60V, 1.2A (I
OUT
), 200kHz, High Efficiency Step-Down DC/DC Converter V
IN
: 5.5V to 60V, V
OUTMAX
= 1.20V, I
Q
= 2.5mA, I
SD
= 25µA,
TSSOP16/TSSOP16E Packages
LT1933 500mA(I
OUT
), 500kHz Step-Down Switching Regulator in SOT-23 V
IN
: 3.6V to 36V, V
OUTMAX
= 1.2V, I
Q
= 1.6mA, I
SD
<1µA,
ThinSOT Package
LT1936 36V, 1.4A(I
OUT
) , 500kHz High Efficiency Step-Down DC/DC Converter V
IN
: 3.6V to 36V, V
OUTMAX
= 1.2V, I
Q
= 1.9mA, I
SD
<1µA,
MS8E Package
LT1940 Dual 25V, 1.4A (I
OUT
), 1.1MHz, High Efficiency Step-Down DC/DC
Converter
V
IN
: 3.6V to 25V, V
OUTMAX
= 1.20V, I
Q
= 3.8mA, I
SD
<30µA,
TSSOP16E Package
LT1976/LT1977 60V, 1.2A (I
OUT
), 200/500kHz, High Efficiency Step-Down DC/DC Converter
with BurstMode
®
Operation
V
IN
: 3.3V to 60V, V
OUTMAX
= 1.20V, I
Q
= 100µA, I
SD
<1µA,
TSSOP16E Package
LTC3407/
LTC3407-2
Dual 600mA/800mA, 1.5/2.25 MHz Syncronous Step-Down DC/DC
Converter
V
IN
: 2.5V to 5.5V, V
OUTMAX
= 0.6V, I
Q
= 40µA, I
SD
<1µA,
3mm × 3mm DFN, MS10E Packages
LT3434/LT3435 60V, 2.4A (I
OUT
), 200/500kHz, High Efficiency Step-Down DC/DC Converter
with BurstMode Operation
V
IN
: 3.3V to 60V, V
OUTMAX
= 1.20V, I
Q
= 100µA, I
SD
<1µA,
TSSOP16E Package
LT3437 60V, 400mA (I
OUT
),MicroPower Step-Down DC/DC Converter with
BurstMode Operation
V
IN
: 3.3V to 60V, V
OUTMAX
= 1.25V, I
Q
= 100µA, I
SD
<1µA,
3mm × 3mm DFN, TSSOP16E Packages
LT3493 36V, 1.4A(I
OUT
), 750kHz High Efficiency Step-Down DC/DC Converter V
IN
: 3.6V to 36V, V
OUTMAX
= 0.8V, I
Q
= 1.9mA, I
SD
<1µA,
2mm × 3mm DFN Package
LT3501 Dual 25V, 3A (I
OUT
), 1.5MHz, High Efficiency Step-Down DC/DC Converter V
IN
: 3.3V to 25V, V
OUTMAX
= 0.8V, I
Q
= 3.7mA, I
SD
<10µA,
TSSOP-20E Package
LT3503 20V, 1A (I
OUT
), 2.2MHz, High Efficiency Step-Down DC/DC Converter V
IN
: 3.6V to 20V, V
OUTMAX
= 0.78V, I
Q
= 1.9mA, I
SD
<1µA,
2mm × 3mm DFN, Package
LT3505 36V, 1.2A (I
OUT
), 3MHz, High Efficiency Step-Down DC/DC Converter V
IN
: 3.6V to 36V, V
OUTMAX
= 0.78V, I
Q
= 2mA, I
SD
<2µA,
3mm × 3mm DFN, MS8E Packages
LT3506/
LT3506A
Dual 25V, 1.6A (I
OUT
), 575kHz/1.1MHz, High Efficiency Step-Down DC/DC
Converter
V
IN
: 3.6V to 25V, V
OUTMAX
= 0.8V, I
Q
= 3.8mA, I
SD
<30µA,
4mm × 5mm DFN Package
LT3508 Dual 36V, 1.4A (I
OUT
), 2.5MHz, High Efficiency Step-Down DC/DC
Converter
V
IN
: 3.6V to 36V, V
OUTMAX
= 0.8V, I
Q
= 4.3mA, I
SD
<1µA,
4mm × 4mm QFN, TSSOP16E Packages
LT3510 Dual 25V, 2A (I
OUT
), 1.5MHz, High Efficiency Step-Down DC/DC Converter V
IN
: 3.3V to 25V, V
OUTMAX
= 0.8V, I
Q
= 3.7mA, I
SD
<10µA,
TSSOP-20E Package
LTC3548 Dual 400mA + 800mA, 2.25 MHz Syncronous Step-Down DC/DC Converter V
IN
: 2.5V to 5.5V, V
OUTMAX
= 0.6V, I
Q
= 40µA, I
SD
<1µA,
3mm × 3mm DFN, MS10E Packages
BurstMode is a registered trademark of Linear Technology Corporation.
