STMicroelectronics L9484 Alternator Voltage Regulator Datasheet

This document is the technical manual for L9484 product, introduces the features and characteristics of the product, including application scenarios, temperature compensation, protection measures, load response control


STMicroelectronics L9484 Alternator Voltage Regulator Datasheet - cover page
Brand
STMicroelectronics
Category
Other Electronics
Document type
Datasheet
Language
English
Pages
11
File format
PDF
File size
161 KB
Published
08 August, 2012
Updated
30 September, 2023
MD5 checksum
4206A0C1E110EE6CD22075B8B87BA7C9

About this manual

The L9484 is a monolithic multifunction alternator voltage regulator intended for use in automotive charging applications, supporting both air and liquid cooled systems. It regulates generator output by controlling field winding current via a variable frequency PWM high-side driver and includes features such as thermal protection, field driver short circuit protection, and load response control.

What's inside

  • Pin description
  • Electrical specification
  • Absolute maximum ratings
  • Thermal data
  • Electrical characteristics
  • Diagnostic
  • Fault indication
  • Regulation features
  • Package information
  • Revision history

Specifications

Power dissipation6 W
Junction temperature-40 to +150 °C
Thermal shut-down175 °C

Frequently asked questions

What is the maximum power dissipation for the L9484?

The maximum power dissipation is 6 W.

What is the maximum junction temperature for the L9484?

The maximum junction temperature is +150 °C.

What is the typical oscillation frequency during LRC operation?

The typical oscillation frequency is 400 Hz.

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