• ST’s VNQ9050LAJ 4-channel high-side driver controls 12-V automotive ground-connected loads via a 3-V and 5-V CMOS-compatible interface. • Operating from 4-V to 28-V with typical R DS(on) as low as 50 mΩ per channel, the device remains active during cold-crank events until the supply falls to the 2.7-V (max) undervoltage shutdown threshold. • This performance supports compliance with LV124 (Rev. • 2013) requirements for low-voltage operation and automotive transients. • Based on ST’s VIPower-M09 technology, the driver protects resistive, capacitive, and inductive loads. • Integrated current sensing uses an on-chip current mirror with a sense FET that tracks the main power FET, enabling accurate load monitoring.

Article Summaries:

  • ST’s VNQ9050LAJ 4-channel high-side driver controls 12-V automotive ground-connected loads via a 3-V and 5-V CMOS-compatible interface. Operating from 4-V to 28-V with typical R DS(on) as low as 50 mΩ per channel, the device remains active during cold-crank events until the supply falls to the 2.7-V (max) undervoltage shutdown threshold. This performance supports compliance with LV124 (Rev. 2013) requirements for low-voltage operation and automotive transients. Based on ST’s VIPower-M09 technology, the driver protects resistive, capacitive, and inductive loads. Integrated current sensing uses

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