Maximum Continuous Output Current: 9A@Tc=85oC 5V Logic Level Compatible Input Thermal Shutdown Under-Voltage Protection Open-Drain Diagnostics
The VN06SP is a monolithic device manufactured using STMicroelectronics ViPower technology for driving resistive or inductive loads that are grounded on one side. A built-in thermal shutdown protects the chip from overheating and short circuits. Open-drain diagnostic outputs indicate: open-circuit load is off, on-state, output to VCC and over temperature. The fast degaussing of inductive loads is caused by the negative ( -18V ) voltage of the load when it is turned off.

Functional Description The device has a diagnostic output that indicates open load conditions, output short to VCC, and overtemperature in both off and on states. Truth tables show input, diagnostic and output voltage levels under normal operating and fault conditions. The output signal is processed by internal logic. The open load diagnostic output has 5 ms filtering. The filter provides a continuous signal for the fault condition after an initial delay of approximately 5 ms. This means that a disconnection (duration less than 5 ms) during normal operation does not affect the status output. Likewise, any reconnection less than 5 ms within the disconnection duration will not affect the status output. Under overtemperature conditions, the state goes low without delay. Starting from the falling edge of the input signal, the state output is initially low under fault conditions (overtemperature or open load), delayed under overtemperature conditions (TPovl), and delayed under open load (TPol). These features fully comply with the International Standards Office (ISO) requirements for high-end drivers in cars. 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 125 oC, the switch will automatically turn on again. In the event of a short circuit, there is little delay in the protective response, and the sensor is located in the area of the mold where heat is generated. Drives inductive loads, the unit's internal function ensures fast degaussing

Typical voltage (Vdemag) is -18V. This feature can greatly reduce power consumption according to the following formula: Pdem=0.5 Lload(Iload)2[(VCC+Vdemag)/Vdemag]f where f=switching frequency, Vdemag=demagnetization voltage Based on this formula, the inductance and/or current can be known value to avoid thermal shutdown. The maximum inductance to bring the die temperature to the shutdown temperature is actually a function of a fixed VCC, VDEMag, and F load current under a given thermal environment.
Protection against load unloading - Test Pulse 5 The device is capable of withstanding Class II (vs= 46.5V ) Test Pulse 5 according to ISO T/R 7637/1 without any external components. This means that all functions of the device are performed as designed with secondary disturbances. The VN06SP is capable of withstanding class III test pulse No. 5, add an external resistor of 150 ohms between the ground pin and ground, and add a filter capacitor of 1000 μF between the VCC pin and ground (if the load is ≤ 20Ω).
The easiest way to protect the device from a continuous reverse battery voltage (-26V) is to insert a Schottky diode between the ground pin and ground, as shown in the Typical Application Circuit (Figure 3). The result of the voltage drop across this diode is the following: If the input is pulled to GND, the device will see a negative voltage at -VF. (VIL, VIH threshold, and VSTAT are increased by VF relative to supply ground). The undervoltage shutdown level is increased by VF. If the control unit does not need to handle external analog signals related to the power supply GND, the best way is to connect the reference potential of the control unit to node [6] (see the application circuit in Figure 4), the node becomes the common of the whole control board signal GND, thus avoiding shifting of VIH, VIL and VSTAT. This solution allows the use of standard diodes.

Typical Application Circuit of Schottky Diode Reverse Power Supply Protection

Typical Application Circuit with Separate Signal Ground