DIO7527

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© 2017 DIOO MICROCIRCUITS CO., LTD

DIO7527• Rev.1.0

Applicaion Information

Figure 2 Typical Characteristics Reference Schematic

Operation Information

DIO7527 is a current limited P-channel MOSFET power switch with over current, thermal shutdown, input UVLO

and output reverse-voltage condition.

Over-current Protection

When the over-current condition is detected, the switch is regulated to achieve constant output current. If the

over current condition lasts for a long time, and results in a junction temperature over 140°C, the switch will be

shutdown. Once the junction temperature drops to 120°C, the part will restart.

Supply Filter Capacitor

In order to prevent the input voltage from dropping during hot-plug condition, a 10µF ceramic capacitor from VIN

to GND is strongly recommended. However, higher capacitance could help reduce thevoltage drop. Further more

an output short will cause ringing on the input without the input capacitor. It could destroy the internal circuitry

when the input transient voltage exceeds the absolute maximum supply voltage even for a short duration.

Current Limiting Setting

Current limit is programmable to protect the power source from over current and short circuit conditions. Connect

a resistor RSET from ISET pin to GND to program the current limit:

IOS(A)=39K/Rset (Ω).

The minimum current limit is 0.4A. Current limit beyond 2A is not recommended.