L9911 Datasheet - ST Microelectronics

L9911 Car alternator multifunction smart voltage regulator

The L9911 is a monolithic multifunction alternator voltage regulator intended for use in automotive application. It includes the control section, the field power stage, fault diagnostic circuit which drives a warning lamp, and the protection against short circuits Order code L9911F L9911I L9911P L9.

L9911 Features

* Fully monolithic design

* High side field driver

* Thermal protection

* Field short circuit protection

* Protected diagnostic lamp driver

* Protected high side relay driver

* Complex diagnostics

* Load response control

* DFM output (field monitor)

* Self st

L9911_STMicroelectronics.pdf