STMicroelectronics L9347 Intelligent Quad Low-Side Switch Datasheet

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.


STMicroelectronics L9347 Intelligent Quad Low-Side Switch Datasheet - cover page
Brand
STMicroelectronics
Category
Other Electronics
Document type
Datasheet
Language
English
Pages
29
File format
PDF
File size
404 KB
Published
08 August, 2012
Updated
29 September, 2023
MD5 checksum
684A544DDB7FD19D7D802080D1126AE9

About this manual

The L9347 is an integrated quad low-side power switch designed for applications requiring precise current control. It features four independent channels: two are configured as conventional switches capable of handling up to 5A, while the other two function as switched current regulators with a range from 250mA to 2.25A and 10% accuracy.

The device includes comprehensive protection mechanisms such as short circuit protection, selective overtemperature shutdown, open load detection, and ground/supply loss detection. It operates from a supply voltage of 4.8V to 18V and is available in the PowerSO-36 package with an integrated cooling area.

What's inside

  • Block diagram
  • Pin connections
  • Electrical specifications
  • Functional Description
  • Input Circuits
  • Output stages
  • Protective circuits
  • Error detection
  • Timing diagrams
  • Package information

Specifications

Accuracy10%
Supply Voltage Range4.8V to 18V
Package TypePowerSO-36

Frequently asked questions

What is the current capacity of the L9347 channels?

The device features two 5A channels designed as conventional switches and two 2.5A channels designed as switched current regulators.

What is the L9347 and what are its current ratings?

The L9347 is an integrated quad low-side power regulator with two channels rated for 5A and two channels rated for 2.5A.

What is the accuracy of the current regulation?

The device provides an accuracy of 10% for its current range.

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