ltm8042 Linear Technology Corporation, ltm8042 Datasheet - Page 28

• Manufacturer Part Number: ltm8042
• Description: Ltm8042/ltm8042-1 - ?module Boost Led Driver And Current Source
• Manufacturer: Linear Technology Corporation

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