R1524x

NO.EA-332-160720

7

TYPICAL APPLICATIONS

C1

R1524x

CE

GND

C2

C1 = Ceramic 0.1 µF

C2 = Ceramic 0.1 µF

R1524x Typical Applications

TECHNICAL NOTES

Phase Compensation

In the R1524x, phase compensation is provided to secure stable operation even when the load current is varied.

For this purpose, make sure to use 0.1

μF or more of a capacitor (C2).

In case of using a tantalum type capacitor and the ESR (Equivalent Series Resistance) value of the capacitor

is large, the output might be unstable. Evaluate the circuit including consideration of frequency characteristics.

Connect 0.1

PCB Layout

For SOT-23-5 package type, wire the following GND pins together: No. 1 and No. 2

For SOT-89-5 package type, wire the following GND pins together: No. 2 and No. 4.

For HSOP-6J package type, wire the following GND pins together: No. 2, No. 4, and No. 5.

Thermal Shutdown

R1524x has a built-in thermal shutdown circuit, which stops the regulator operation if the junction temperature

of this device increases to 160°C (Typ.) or higher. If the temperature drops to 135°C (Typ.) or lower, the regulator

restarts the operation. Unless eliminating the overheating problem, the regulator turns on and off repeatedly and

as a result, a pulse shaped output voltage is generated.