Datasheet

LT3014
13
3014fd
TYPICAL APPLICATIONS
LT3014 Automotive Application
LT3014 Telecom Application
Constant Brightness for Indicator LED over Wide Input Voltage Range
+
ADJ
OUTIN
SHDN
LT3014
GND
ON
OFF
1μF
1μF
V
IN
12V
(LATER 42V)
LOAD: CLOCK,
SECURITY SYSTEM
ETC
+
–
ADJ
OUTIN
SHDN
LT3014
GND
ON
OFF
1μF
1μF
V
IN
48V
(72V TRANSIENT)
LOAD:
SYSTEM MONITOR
ETC
NO PROTECTION
DIODE NEEDED!
NO PROTECTION
DIODE NEEDED!
3014 TA05
BACKUP
BATTERY
R1
R2
R1
R2
IN
LT3014
SHDN
1μF
RETURN
OFF ON
–48V
OUT
ADJ
GND
3014 TA06
1μF
R
SET
I
LED
= 1.22V/R
SET
–48V CAN VARY FROM –3.3V TO –80V
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