Allegro A1121LLHLT-T

单极开关霍尔效应3V ~ 24V25mA开路漏极

Overview

The A1120, A1121, A1122, A1123, and A1125 Hall-effect unipolar switches are extremely temperature-stable and stress-resistant sensor ICs, especially suited for operation over extended temperature ranges to 150°C. Superior high temperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress. Each device includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a short-circuit protected open-drain output to sink up to 25 mA. An on-board regulator permits operation with supply voltages of 3 to 24 V. The advantage of operating down to 3 V is that the device can be used in 3 V applications or with additional external resistance in series with the supply pin for greater protection against high-voltage transient events.

AND BENEFITS AEC-Q100 automotive qualified Unipolar switchpoints Resistant to physical stress Superior temperature stability Output short-circuit protection Operation from unregulated supply Reverse-battery protection Solid-state reliability Small package sizes

Features

Tape & Reel (TR) Package
Packaging: Tape & Reel (TR)
Moisture Sensitivity Level (MSL): 1 (Unlimited)
Supply Voltage: 3V~24V
Operating Temperature: -40°C~150°C TA
Mounting Type: Surface Mount
3 Pins
3 Terminations
Output Type: Open Drain

25mA Current - Output (Max)

Applications

There are a lot of Allegro MicroSystems
A1121LLHLT-T Magnetic Switches applications.

• Speed and RPM (revolutions per minute) sensing
• Tachometer
• Counter pickup
• Flow-rate sensing
• Brushless DC (direct current) motor commutation
• Motor and fan control
• Robotics control
• Electric window lift
• Convertible roof position
• Motor assemblies