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