LT3013B

13

3013bfb

TYPICAL APPLICATIONS

LT3013B Automotive Application

+

ADJ

OUT

IN

LT3013B

GND

1μF

3.3μF

750k

12V

(LATER 42V)

LOAD: CLOCK,

SECURITY SYSTEM

ETC

+

–

ADJ

OUT

IN

LT3013B

GND

1μF

3.3μF

48V

(72V TRANSIENT)

LOAD:

SYSTEM MONITOR

ETC

NO PROTECTION

DIODE NEEDED!

NO PROTECTION

DIODE NEEDED!

3013 TA05

BACKUP

BATTERY

249k

750k

249k

LT3013B Telecom Application

Constant Brightness for Indicator LED over Wide Input Voltage Range

IN

LT3013B

1μF

RETURN

–48V

OUT

ADJ

GND

3013 TA06

3.3μF

–48V CAN VARY FROM –4V TO –80V

APPLICATIONS INFORMATION

regulator output, this current will be reduced depending

on the size of the resistor divider.

When the IN pin of the LT3013B is forced below the

OUT pin or the OUT pin is pulled above the IN pin, input

current will typically drop to less than 2μA. This can happen

if the input of the LT3013B is connected to a discharged

(low voltage) battery and the output is held up by either

a backup battery or a second regulator circuit.