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AS13986

Datasheet - A p p l i c a t i o n I n f o r m a t i o n

9 Application Information

Figure 15. Typical Application Diagram

Current Limit

The AS13986 features integrated short-circuit protection and a current limiting circuitry which controls the pass transis-

tor gate voltage, limiting output current to approximately 500mA.

Thermal Overload Protection

exceeds +160ºC, the thermal sensor sends a signal to the shutdown logic, turning off the pass transistors and allowing

the device to cool down. The pass transistors will turn on again when the junction temperature cools by 20ºC (typ),

resulting in a pulsed output during continuous thermal overload conditions.

Power Dissipation

Maximum power dissipation of the AS13986 depends on the thermal resistance of the case and PCB, the temperature

difference between the die junction and ambient air, and the rate of air flow. The power dissipated by the AS13986 is

calculated as:

(EQ 1)

The maximum power dissipation is:

(EQ 2)

Where:

AS13986

C3

GND

1 to

22µF

C2

GND

1µF

0.01µF

A2

A3

B3

EN1

B1

EN2

C1

BYPASS

A1

+2.5 to

6V

1 to

22µF