Output Current (Continuous): 6atc=25oc 5v Logic Level Compatible Input Thermal Shutdown Low Voltage Shutdown Open Drain Diagnostic Output Very Low Standby Power Dissipation Description
The VN02NSP /VN02NPT are monolithic devices using SGS-Thomson Vertical Smart Manufacturing for power supply technology that drives resistors or inductive loads grounded on one side.
Built-in thermal shutdown protects the chip from overheating and short circuits.
Input controls are compatible with 5V logic levels.
Open-drain diagnostic outputs indicate open circuit (no load) and overtemperature conditions.

Functional Description The device has a diagnostic output indicating open circuit (no load) and over temperature conditions. The output signal is processed by internal logic.
To protect the device from short circuits and overcurrents, thermal protection shuts down the integrated power mos at a minimum junction temperature of 140 °C. When the temperature returns to about 125 oC, the switch will automatically turn on again. Under short-circuit conditions, the protection is almost without delay and the sensor is located in the area of the mold where heat is generated.
Protect your device from reverse battery The easiest way to protect your device from a continuous reverse battery voltage (-26V) is to insert a Schottky diode between pin 1 (GND) and ground, as in the Typical Application Circuit shown

The result of the voltage drop across this diode is as follows:
If the input is pulled to power ground, the device will see a negative voltage of -vf. (VIL, VIH threshold, and VSTAT are increased by VF relative to supply ground).
The undervoltage shutdown level increases VF.
If the control unit does not need to handle external analog signals related to power ground, the best way is to connect the reference potential of the control unit to node [1] (see application circuit infig). 4), become the common signal GND of the whole control board.
In this way, VIH, VIL and VSTAT are not displaced and no negative voltages appear on the input pins; this solution allows the use of standard diodes with breakdown voltages capable of handling any ISO normalized negative pulses that occur in an automotive environment.

Typical Application Circuit of Schottky Diode Reverse Power Supply Protection