Datasheet

LT3505
22
3505fc
750kHz, 3.3V Step-Down Converter
V
IN
4.2V TO 36V
ON OFF
0.1µF
10µH
36.5k
10µF
3505 TA04
68pF
1µF
11.3k
V
OUT
3.3V
1.1A, V
IN
> 5V
1.2A, V
IN
> 8V
1N4148
MBRM140
70pF
69.8k
BOOST
FB
V
C
SW
75.0k
V
IN
SHDN
R
T
GND
LT3505
1MHz, 12V Step-Down Converter
V
IN
13.5V TO 36V
ON OFF
0.1µF
15µH
1k*
0.25W
CMDZ5235B
6V
1N4148
71.5k
10µF
3505 TA05
22pF
22pF
3.3µF
54.9k
4.99k
V
OUT
12V
1A, V
IN
> 16.5V
1.1A, V
IN
> 20.5V
100k
MBRM140
*FOR CONTINUOUS OPERATION ABOVE 30V,
USE TWO 2k, 0.25W RESISTORS IN PARALLEL
BOOST
GND
FB
V
C
SW
LT3505
V
IN
SHDN
R
T
TYPICAL APPLICATIONS