High-side switch suits automotive loads

HMI’s HL8518 is a single-channel high-side power switch for automotive low-watt lamps, high-side relays and valves, and other general loads. The device integrates a power FET and charge pump, providing a typical on-resistance of 80 mΩ.

The HL8518 operates from 3.5 V to 40 V and provides 3-V/5-V compatible logic inputs. Current limiting is programmable via an external resistor. AEC-Q100 Grade 1 qualified, the switch operates over a temperature range of -40°C to +125°C and has a low standby current of <0.5 µA.

Protection functions of the HL8518 include overvoltage, short-circuit, undervoltage lockout, thermal shutdown, and reverse battery. When tested in accordance with AEC-Q100-12, the power switch achieved Class A certification by enduring 1 million short circuits to ground.

Samples of the HL8518 high-side switch can be ordered online.

HL8518 product page

HMI

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