CHA441/P/N

Description

The CHA44X/CH44X Hall-effect sensor is extremely temperature-stable and stress-resistant sensor ICs, 

especially suited for operation over extended temperature ranges from -40°C to 150°C. Superior high 

temperature performance is possible through dynamic offset cancellation, which reduces the residual offset 

voltage normally caused by device over-molding, temperature dependencies, and thermal stress.

The device includes 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 2.5 to 22 V. The advantage of operating 

down to 2.5V is that the device can used in 2.5V applications or with additional external resistance in 

series with the supply pin for greater protection against high-voltage transient events.

The CHA44X/CH44X series is latch Hall switch. For the latch mode, there are also invert polarity 

devices. Normally a south pole of sufficient strength turns on the output; However, for invert polarity 

devices, a north pole of sufficient strength turns on the output.

The CHA44X/CH44X also integrated internal clamps against supply/output transients; output short 

circuits protection; reverse battery conditions.

Three package styles provide a magnetically optimized package for most applications, SOT-23, TO-92S

and SOT-89. Each package type is lead (Pb) free (suffix, –T), with a 100% matte-tin-plated lead-frame.

The CHA44XP/CH44XP Hall-effect sensor is extremely temperature-stable and stress-resistant sensor 

ICs, well suited for operation over extended temperature ranges from -40°C to 150°C. Superior high 

temperature performance is possible through dynamic offset cancellation, which reduces the residual

offset voltage normally caused by device over-molding, temperature dependencies, and thermal stress.

The device includes 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. It also 

integrated internal clamps against supply/output transients; output short circuits protection; reverse 

battery conditions. The advantage of operating down to 2.5V is that the device can used in 2.5V 

applications or with additional external resistance in series with the supply pin for greater protection 

against high-voltage transient events.

The CHA44XP/CH44XP series is latch Hall switch. For the latch mode, there are also invert polarity

devices. Normally a south pole of sufficient strength turns on the output; However, for invert polarity 

devices, a north pole of sufficient strength turns on the output.

APPLICATIONS

- Speed and RPM sensing

- Tachometer, counter pickup

- Flow-rate sensing

- Brushless dc (direct 

current) motor commutation

- Motor and fan control

- Robotics control

• Car seat motor 

position sensor

• BLDC motor 

commutation

• Car window position 

sensor

• Flow-rate sensing

• Motor and fan 

control

• Tiny motor position 

sensor