R-78AAxx-0.5 SMD
Series
INNOLINE
DC/DC-Converter
Application Examples
Flash Memory Program Voltage Switcher
220kW
Pgm
R-78AA12-0.5SMD
+Vin
Reprogrammable
Flash Memory
C1
0V
0V
Program
24kW
"Program" = 0V, Pgm Pin = +5V
"Program" = high, Pgm Pin = +12,6V
DC/DC Converter ( 1:1 )
+Vin
GND
R-78AAxx-0.5SMD
+Vout
GND
C1
C2
- High isolation voltage
- Improved loading / line regulation
On/Off
- Wide Input Voltage Range
- Point-of-Load Architecture
- Remote On/Off Control
C1 , C2 : optional
Optional Protection Circuit
Optional Protection 2:
Optional Protection 1:
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.
+Vin
+Vout
+Vin
R-78A(A)xx
-xxxSMD
R-78A(A)xx
-xxxSMD
+Vout
Diode
The diode can either be fitted
across the device if the
source is low impedance or
fitted in series with the output
(recommended).
CTRL
GND
CTRL
GND
Trim output voltage
up 1 diode drop
GND
GND
+Vin
+Vout
Application example:
Driving a high capacitive load
R-78xx-xx
6800µF
GND
GND
I-10
REV: 1/2015
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