STMicroelectronics L5951 Triple Output Multifunction Voltage Regulator Datasheet

L5951 is a triple output multifunctional voltage regulator with J1850 interface for car radio.

Brand: STMicroelectronics
Category: Other Electronics
Document type: Datasheet
Language: English
Pages: 13
File format: PDF
File size: 121 KB
Published: 08 August, 2012
Updated: 30 September, 2023
MD5 checksum: BFC3E3C70B922DAD658427FCD6FEC698
PDF: STMicroelectronics L5951 Triple Output Multifunction Voltage Regulator Datasheet PDF

About this manual

The L5951 is a monolithic triple regulator integrated with a SAE J1850 Integrated Driver/Receiver realized in advanced Multipower-BCD technology. It is intended to drive single wire J1850 communications and offer microcontroller power and power management for automotive or industrial applications. The device provides three voltage regulators: 3.3V, 5V, and 7.8V, along with a Class 2/IDR physical layer.

What's inside

Functional Description
Regulator Outputs
Protection Features
Protocol Description
Absolute Maximum Ratings
Pin Connection
Pin Functions

Specifications

REG1 Output Voltage	3.3V
REG2 Output Voltage	5V
REG1 Max Current	100mA
Short Circuit Limit	280mA
Operating Supply Voltage	4.5V to 26.5V
Peak Supply Voltage	34V
Operating Temperature Range	-40 to 85 °C

Frequently asked questions

What is the maximum current for the 5V regulator?

The 5V regulator can handle currents up to 100mA with a short circuit limit of 280mA.

How is the 7.8V regulator controlled?

The 7.8V regulator is controlled by the EN (enable) pin; a logic "1" enables it and a logic "0" disables it.

What happens if the battery voltage drops below 7.0V?

The outputs remain alive and ready for the return of normal voltage, allowing the device to retrieve data off the BUS down to 4.9V.

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