A1121LLHLT-T - Allegro MicroSystems

Manufacturer Part Number

A1121LLHLT-T

Manufacturer

Allegro MicroSystems

Introduction

The A1121LLHLT-T is a unipolar Hall-effect switch IC designed for automotive and industrial applications. It features a low-voltage operation, wide operating temperature range, and surface-mount package.

Product Features and Performance

Operates on 3V to 24V supply voltage

Wide operating temperature range of -40°C to 150°C

Unipolar switch function with south pole activation

Sensing range of 13.5mT trip and 4mT release

Open-drain output with up to 25mA current capability

Low current consumption of 4mA maximum

Product Advantages

Robust performance in harsh environments

Compact and easy-to-integrate surface-mount package

Versatile voltage and temperature range

Key Technical Parameters

Supply voltage: 3V to 24V

Operating temperature: -40°C to 150°C

Output type: Open-drain

Supply current: 4mA max.

Output current: 25mA max.

Magnetic activation: South pole

Quality and Safety Features

RoHS3 compliant

AEC-Q100 qualified for automotive applications

Compatibility

Designed for use in a wide range of automotive and industrial applications.

Application Areas

Automotive systems (e.g., transmission, engine, brakes)

Industrial automation and control systems

Household appliances

General purpose position and proximity sensing

Product Lifecycle

The A1121LLHLT-T is an active product, with no indications of discontinuation. Allegro MicroSystems regularly updates their product portfolio, and newer versions or alternatives may become available over time.

Key Reasons to Choose This Product

Reliable performance in harsh environments

Wide operating voltage and temperature range

Compact and easy-to-integrate surface-mount package

Versatile unipolar switch function with open-drain output

AEC-Q100 qualification for automotive applications