Datasheet

LTM8042/LTM8042-1
28
80421fa
Buck-Boost Mode, Driving 5 White LEDs at 500mA with PWM Dimming
Buck Mode, Driving 4 White LEDs at 1A
Boost Operation, Driving 9 White LEDs at 100mA
TYPICAL APPLICATIONS
80421 TA03
LTM8042
Si2319DS
UP TO 16.3V
RT GND CTL
2.2µF
7.32k
19.6k
f
SW
= 850kHz
1µF
V
CC
RUN
PWM
TGEN
SYNC
SS
V
IN
7V TO 17.5V
LED
+
TG
BSTOUT/BKIN
BSTIN/BKLED
–
1µF
500mA
80421 TA04
LTM8042
RT GND CTL
4.7µF
15.8k
f
SW
= 1MHz
2.2µF
UP TO 13.9V
V
CC
RUN
PWM
SYNC
TGEN
SS
V
IN
19V TO 30V
LED
+
TG
BSTOUT/BKIN
BSTIN/BKLED
–
1µF
1A
80421 TA05
LTM8042-1
RT GND
Si2319DS
CTL
V
CC
RUN
BSTIN/BKLED
–
PWM
TGEN
SYNC
SS
V
IN
6V TO 22V
LED
+
TG
BSTOUT/BKIN
3.4k
2.2µF
2.2µF
24.9k
f
SW
= 700kHz
100mA
UP TO 29V