R1516x

NO.EA-258-140703

7

TYPICAL APPLICATION

C1

R1516x

Series

CE

GND

C2

C1=Ceramic 0.1

μF

C2=Ceramic 0.1

μF

TECHNICAL NOTES

When using the R1516x Series, please consider the following points.

Phase Compensation

The R1516x Series provide the constant-voltage without using C1 and C2 capacitors. However, if the input line

is too long, C1 should be connected. To minimize the input voltage fluctuation and the transient output voltage

fluctuation that is caused by the load fluctuation, C2 size should be increased. Please refer to the Basic Test

close as possible to each other.

GND Wiring on Boards

For SOT-89-5 package, please connect the No.2 pin and the No.4 pin to the ground plane on the board.

For HSOP-6J package, please connect the No.2 pin, the No.4 pin and the No.5 pin to the ground plane on the

board.

Thermal Shutdown

The thermal shutdown is included, which limits the junction temperature to a maximum 160ºC (Typ.). Under

extreme conditions when the junction temperature begins to rise above 160ºC, the output is turned off, reducing

the output current to zero. When the junction temperature drops below +125ºC (Typ.), the output is turned on

again and the output current is restored to its nominal value. The output repeats turning on and off to form a pulse

shaped output unless the causes of the temperature rise are removed.

Chip Enable (CE) Circuit

output.