R-78AA12-0.5SMD-R datasheet(4/5 Pages) RECOM

4 / 5 page

Application Examples

INNOLINE

DC/DC-Converter

+Vin

R-78AA12-0.5SMD

Reprogrammable

Flash Memory

24kW

"Program" = 0V, Pgm Pin = +5V

Flash Memory Program Voltage Switcher

Pgm

Program

220kW

"Program" = high, Pgm Pin = +12,6V

+Vin

GND

R-78AAxx-0.5SMD

GND

+Vout

DC/DC Converter ( 1:1 )

- Improved loading / line regulation

- Wide Input Voltage Range

C1 , C2 : optional

- Point-of-Load Architecture

- High isolation voltage

On/Off

- Remote On/Off Control

R-78AAxx-0.5 SMD

Series

Optional Protection Circuit

R-78A(A)xx

-xxxSMD

GND

+Vout

+Vin

GND

Diode

Trim output voltage

up 1 diode drop

CTRL

Add a blocking diode to Vout

if current can flow backwards

into the output, as this can

damage the converter when it

is powered down.

The diode can either be fitted

across the device if the

source is low impedance or

fitted in series with the output

(recommended).

GND

+Vout

+Vin

GND

R-78A(A)xx

-xxxSMD

CTRL

Optional Protection 1:

Optional Protection 2:

R-78xx-xx

GND

+Vout

+Vin

GND

6800µF

Application example:

Driving a high capacitive load

I-10

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