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IRUH330133BK

IRUH330133BP

Application Information

IRUH3301xxxx

0.1uF and 1uF

Ceramic;

Two 100uF

Low ESR

Tantalum

V

IN

GND

SHDN

V

SENSE

V

OUT

0.1uF and 1uF

Ceramic;

Two 100uF

Low ESR

Tantalum

Input

Voltage

Output

Voltage

The V

Over-Current & Over-Temperature Protection

The IRUH3301 series provides over-current protection by means of a timed latch function. Drive

current to the internal PNP pass transistor is limited by an internal resistor (Rb in Fig. 3) between

voltage across this resistor to exceed 0.5V (nom), the latch feature will be triggered. The time-to-

latch (t

will not be set. If the latch is set the drive current to the PNP pass transistor will be disabled. The

latch will remain set until one of the following actions occur:

1. The SHDN Pin voltage is brought above 1.2V and then lowered below 0.8V.

2. The V

If the junction temperature of the regulator IC exceeds 140°C nominal, the thermal shutdown circuit

will set the internal latch and disable the drive current to the PNP pass transistor as described

above. After the junction temperature falls below a nominal 125°C, the latch can be reset using

either of the actions described above.

Under-Voltage Lock-Out

(nominal). There is a nominal 100mV hysteresis about this point.

Input Voltage Range

voltage lock-out when V

and overshoot may occur. A larger output capacitor should be used to slow down the V

for slow V

Shutdown (SHDN)

The regulator can be shutdown by applying a voltage of >1.2V to the SHDN Pin. The regulator will

restart when the SHDN Pin is pulled below the shutdown threshold of 0.8V. If the remote shutdown

feature is not required, the SHDN Pin should be connected to GND.