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Winson Semiconductor - Single Coil Hall Effect IC with Thermal Lock Protection and Auto-Restart

Numéro de référence WSH420
Description Single Coil Hall Effect IC with Thermal Lock Protection and Auto-Restart
Fabricant Winson Semiconductor 
Logo Winson Semiconductor 





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WSH420 fiche technique
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WSH420
Preliminary
Single Coil Hall Effect IC with Thermal Lock
Protection and Auto-Restart
Features:
Operate from 2.4V to 8V supply voltage.
On-chip Hall sensor.
Internal bandgap regulator allows temperature compensated operations and a
wide operating voltage range.
Output sinking capability up to 450mA for driving large load.
Lower current change rate reduces the peak output voltages during switching.
Available in rugged low profile SIP-4L, SOT-25 packages.
Built-in Frequency Generator.
Built-in protection resistance for reverse power supply fault.
Prevent the fail situation during lock status or high temperature
Built-in thermal lock protection and auto-restart function.
General Deswcrwiptiwon.:DataSheet4U.com
WSH420 is designed to integrate Hall sensor with two push-pull output drivers and
frequency generator together on the same chip, it is suitable for single coil DC
brushless motors. It includes a temperature compensated voltage regulator, a
differential amplifier, a Hysteresis controller, complementary bi-direction drivers for
sinking and driving large current load and an open-collector frequency generator
capable of sinking 10mA current load. An on-chip protection diode is implemented to
prevent reverse power fault. It also includes coil parts. You can eliminate all the
external components for the function of FG and reverse protection diode. And
built-in thermal lock protection and auto-restart function will automatically shutdown
power at 120°C to prevent the coils be damaged during high temperature and
auto-restart at 115°C. It can replace the function of lock protection and auto-restart at
low cost.
WSH420 are rated for operation over temperature range from –20˚ C to 90˚C and
voltage ranges from 2.4V to 8V.
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2004/3/3
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