开合帘电机霍尔 MH188 锁存霍尔

MH188 Hall-effect sensor is a temperature stable, stress-resistant sensor. Superior high-temperature performance is made possible through a dynamic offset cancellation that  utilizes chopper-stabilization. This method reduces the offset voltage normally caused by  device over molding, temperature dependencies, and thermal stress. MH188 includes the following on a single silicon chip: voltage regulator, Hall voltage  generator, small-signal amplifier, chopper stabilization, Schmitt trigger, Advanced DMOS  wafer fabrication processing is used to take advantage of low-voltage requirements, component  matching, very low input-offset errors, and small component geometries. This device requires the presence of both south and north polarity magnetic fields for  operation. In the presence of a south polarity field of sufficient strength, the device output  sensor on, and only switches off when a north polarity field of sufficient strength is present. MH188 is rated for operation between the ambient temperatures -40℃and 85℃ for the E  temperature range, and -40℃to 125℃ for the K temperature range. The two package styles  available provide magnetically optimized solutions for most applications. Package SO is an  SOT-23, a miniature low-profile surface-mount package, while package UA is a three-lead  ultra mini SIP for through-hole mounting.  Packages is Halogen Free standard and which have been verified by third party lab. 

Features and Benefits 

 DMOS Hall IC Technology

 Reverse bias protection on power supply pin.

 Chopper stabilized amplifier stage. 

Optimized for BLDC motor applications.

Reliable and low shifting on high Temp condition. 

 Switching offset compensation at typically 69 kHz. 

Good ESD Protection. 

100% tested at 125 ℃ for K. 

 Custom sensitivity / Temperature selection are available.

Applications

 High temperature Fan motor 

 3 phase BLDC motor application 

Speed sensing

 Position sensing 

 Current sensing 

 Revolution counting 

 Solid-State Switch 

 Linear Position Detection 

 Angular Position Detection 

 Proximity Detection 

 High ESD Capability