CMOS Compatible Inputs per Channel Open-Drain State Outputs Open Load Detection Closed State Open Load Detection Short Circuit Load Protection Undervoltage and Overvoltage Shutdown Loss of Ground Protection Very Low Backup Current Reverse Battery Protection

illustrate
The VNQ830M is made by assembling two vnd830m chips in the same so-28 package. The vnd830m is a monolithic device manufactured using STMicroelectronics Vipower M0-3 technology. The VNQ830M is used to drive any type of multiple loads to ground on one side.
An active VCC pin voltage clamp protects the device against low energy peaks (see ISO 7637 Transient Compatibility Table). Active current limiting combined with thermal shutdown and automatic restart prevents device overloading. The device detected an open load state and a closed state. The goal of the openload threshold is to detect when a 5W/ 12V standard bulb is turned on and the load fault is on. The output pair is shorted to detect that VCC is off. The device ground pin is automatically closed disconnected.

block diagram

Current and Voltage Conventions

Connection Diagram (Top View)

Ground Protection Mesh Reverse Battery Solution 1: Resistor in Ground Wire (RGND only). This can be used for any type of load. Here's how to label the RGND resistors.
1) rgnd≤600mv/2 (max (open).
2) rgnd ≥ (-vcc)/(-ignd) where -ignd is the DC reverse ground pin current and the device datasheet can be found in the Absolute Maximum Ratings section.

Application diagram

The power dissipation in rgnd (when vcc<0: battery condition in reverse) is: Pd=(-VCC) 2/rgnd this resistor can be in several different high-speed rails. Note that the value of this resistor should be calculated using Equation (1), where is(on)max becomes the sum of the maximum on-state currents of the different devices.
Note that if the microprocessor ground is not shared with the device ground, then rgnd will produce a shift in the input threshold (is(on) max * rgnd) along with the status output value. The shift will vary depending on how many devices in this case several high-side drives share the same rgnd.
Solution 2 is recommended if the calculated power dissipation results in a large resistor or if several devices must share a resistor ST.

Solution 2: Diode in the ground wire (DGND). The resistor (rgnd = 1kΩ) should match dGND if the device is driving an inductive load. This small signal diode can be in several different HSDs. In this case, the ground network will be at the input threshold and state output values of the microprocessor ground with the device not commonly ground. If there is more than one high drive gear, this gear does not change sharing the same diode/resistor network.
Load dump protection if the load dump peak voltage exceeds the VCC maximum DC rating. The same applies to devices where the VCC line is larger than the ISO T/R 7637/1 table.
μC I/O Protection: If a ground protection network is used and there is a transient on the negative VCC line, the control pin will be negated. ST recommends inserting a resistor (RPROT) to prevent the μC I/O pins from locking up.
The values of these resistors are the leakage current μC and the number of HSD I/Os with latch limit (input stage compatibility) μC I/Os.
-vccpeak/ilatchup≤rprot≤(vohμc-vih-vgnd)/iihmax calculation example: VCCPEAK=-100V, ILATCHUP≥20mA; VOHμC≥4.5V5KΩ≤RPROT≤65KΩ.
The recommended rprot value is 10kΩ.

Open Load Detection in Disconnected State Off-state Open Load Detection requires an external pull-up resistor (RPU) connected between the output pin and a positive supply voltage (VPU), as past the +5V line to provide the microprocessor.

External resistors must be based on the following requirements:
1) No false open load indication when connecting load: in this case we have to avoid going higher than volmin; this leads to the following situation vout=(vpu/(rl+rpu))rl Since IS(off) may increase significantly high (up to several mA) if VOUT is pulled, the pull-up resistor RPU should be connected to the power supply when the module is in standby.
The values for volmin, volmax and il(off2) are in the Electrical Characteristics section.