ST L9780

航空燃料传感器接口4.9V ~ 5.1V

Overview

L9780 is an IC designed to interface a variety of wide range air fuel sensors.

The device manages the oxygen pump of the wide range air fuel sensor by means of a voltage controlled current source (VCCS). The reference for the VCCS is generated by a PI controller with external compensation network in order to adapt the device to different sensors. The user can choose between two different networks using the SPI interface. L9780 is fully compatible with most sensors on the market. The internal timing state machine automatically manages all the operations needed for a right sequencing of the measurement process. All the main time values can be configured by SPI. L9780 drives also an external FET used to control the sensor heater. The device protects the sensor and all the I/O against shorts and provides the diagnosis by SPI.

Features

Tray Package
Mainly used in Air Fuel Sensor Interface applications
Operating temperature: -40°C~125°C
ANALOG CIRCUIT analog IC

Surface Mount Mounting Type

Applications

There are a lot of STMicroelectronics
L9780Power Management applications.

• Portable Navigation Devices
• Portable Media Players
• Portable Systems
• Hand-Held Systems
• Space satellite point of load supply
• Communications payload
• Optical imaging payload
• Desktop PC
• Motherboard
• Standard notebook PC