IK4993

Preliminary Version

Application information.

Fig. 5. Application circuit.

Voltage regulator.

Voltage regulator uses a p-channel transistor as a regulating element. With this

structure, very low dropout voltage at current up to 500mA is obtained. The output voltage is

regulated up to transient input supply voltage of 40V. No functional interruption due to over-

voltage pulses is generated.

A short circuit protection to GND is provided.

The voltage regulator watchdog functionality can be disabled by putting WEn low.

Fig. 6. Behavior of current limitation.