L9347:four channel valve driver

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.

Key Features

  • Open load detection
  • Selective overtemperature shutdown
  • External clock control
  • Ground and supply loss detection
  • Regulator drift detection
  • Recirculation control
  • Regulator resolution 5mA
  • Regulator error control
  • Status monitoring
  • Output slope control
  • Integrated free-wheeling and clamping Z-diodes
  • Quad low-side switch
  • 2 x 2.5A designed as switched current-regulator
  • 2 x 5A designed as conventional switch
  • Power SO-36 - package with integrated cooling area
  • Short circuit protection
  • Electrostatic discharge (ESD) protection
  • Low ON-resistance 2 x 0.2Ω , 2 x 0.35Ω (typ.)
  • Status push-pull stages
Product Specifications
DescriptionVersionSize
DS2443: Intelligent quad (2x5A/2x2.5A ) low-side switch3.0320 KB
User Manuals
DescriptionVersionSize
UM0546: PTB801DB evaluation board for ABS valve drivers system2.1294 KB
Sample & Buy
Part NumberQuantityUnit Price (US$) *PackagePacking TypeOperating Temperature (°C) (min)Operating Temperature (°C) (max)ECCN (EU)ECCN (US)Country of Origin
L9347LF-TR10003.81PowerSO 36Tape And Reel--NECEAR99MALAYSIA
L9347LF10003.81PowerSO 36Tube--NECEAR99MALAYSIA
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
L9347LF-TRPowerSO 36AutomotiveEcopack2
L9347LFPowerSO 36AutomotiveEcopack2
Intelligent quad (2x5A/2x2.5A ) low-side switch L9347
circuit_diagram_8142_thumbnail.png L9347
PTB801DB evaluation board for ABS valve drivers system L9352B