Datasheet

LT3509
20
3509fc
3509 TA03
LT3509
GND
RTSYNC
DA1
FB1
RUN/SS1
DA2
FB2
RUN/SS2
BDV
IN
BOOST2BOOST1
SW2SW1
15µH
0.22µF
UPS140
UPS140
0.22µF
V
IN
4.5V TO 36V
(TRANSIENT TO 60V)
2.2µF
10µH
V
OUT
1.8V
0.7A
22µF
10k
178k
12.4k 31.6k
22nF
22µF
10k
22nF
CLOCK
1.6V
0.4V
V
OUT
3.3V
0.7A
NOTE: R
T
CHOSEN FOR 264kHz
1.8V and 3.3V Outputs, Synchronized to 300kHz to 600kHz
3509 TA04
LT3509
GND
RTSYNC
DA1
FB1
RUN/SS1
DA2
FB2
RUN/SS2
BDV
IN
BOOST2BOOST1
SW2SW1
DFLS140L
DFLS140L
10µH
0.22µF
0.22µF
2.2µF
6.8µH
10µF
22nF
10k
40.2k
52.3k
10k
90.9k
10µF0.1µF
10k
V
IN
9.4V TO 36V
DISPLAY POWER
CONTROL
0V = OFF
3.3V = ON
V
OUT
5V
0.7A
V
OUT
8V
0.7A
f
SW
= 1MHz
Automotive Accessory Application
5V Logic Supply and 8V for LCD Display with Display Power Controlled by Logic
TYPICAL APPLICATIONS