DESCRIPTION

The L9347 is an integrated quad low-side power switch to drive inductive loads like valves used in ABS systems. Two of the four channels are current regulators with current range from 250mA to 2.25A and an accuracy of 10.

All channels are protected against fail functions. They are monitored by a status output.

■ Quad low-side switch

■ 2 x 5A designed as conventional switch

■ 2 x 2.5A designed as switched current-regulator

■ Low ON-resistance 2 x 0.2Ω, 2 x 0.35Ω (typ.)

■ Power SO-36 - package with integrated cooling area

■ Integrated free-wheeling and clamping Z-diodes

■ Output slope control

■ Short circuit protection

■ Selective overtemperature shutdown

■ Open load detection

■ Ground and supply loss detection

■ External clock control

■ Recirculation control

■ Regulator drift detection

■ Regulator error control

■ Regulator resolution 5mA

■ Status monitoring

■ Status push-pull stages

■ Electrostatic discharge (ESD) protection