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Winson Semiconductor

WSH411 Datasheet Preview

WSH411 Datasheet

Hall Effect Sensor IC with Thermal Lock Protection and Auto Restart Function

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WSH411
Hall Effect Sensor IC with Thermal Lock Protection
and Auto Restart Function
Features:
Operate from 2.8V to 20V supply voltage.
On-chip Hall sensor.
Internal bandgap regulator allows temperature compensated operations and a
wide operating voltage range.
High output sinking capability up to 500mA for driving large load.
Lower current change rate reduces the peak output voltages during switching.
Available in rugged low profile SOT-25 , SIP-4L packages.
Built-in FG output.
Built-in protection diode for reverse power supply fault.
Built-in thermal lock protection and auto-restart function.
General Description:
WSH411 is designed to integrate Hall sensor with complementary output drivers and
www.DataSheet4U.comfrequency generator together on the same chip, it is suitable for speed measurement,
revolution counting, positioning, and DC brushless motors. It includes a temperature
compensated voltage regulator, a differential amplifier, a Hysteresis controller, two
open-collector output drivers capable of sinking 1A 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. And built-in thermal lock
protection and auto-restart function is suitable for super high speed fan. It can replace
the function of lock protection and auto restart function. The power will be shutdown
automatically at 135°C to prevent the coils be damaged and atuo-restart after cooling
down.
The temperature-dependent bias increases the supply voltage of the hall plates and
adjusts the switching points to the decreasing induction of magnets at higher
temperatures. Subsequently, the open collector output switches to the appropriate state.
WSH411 are rated for operation over temperature range from 20˚ C to 100˚C and
voltage ranges from 2.8V to 20V.
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2005/8/12
1
DataSheet 4 U .com
www.DataSheet4U.com




Winson Semiconductor

WSH411 Datasheet Preview

WSH411 Datasheet

Hall Effect Sensor IC with Thermal Lock Protection and Auto Restart Function

No Preview Available !

www.DataSheet4U.com
WSH411
Name
VDD
Vss
FG
OUT2
OUT1
P/I/O
P
P
O
O
O
Pin#
Description
Positive Power Supply
Ground
Frequency Generator
Output Pin 2
Output Pin 1
Name
Vcc
OUT1
OUT2
Vss
P/I/O
P
O
O
P
Pin#
Description
Positive Power Supply
Output Pin #1
Output Pin #2
Ground
Name
Vcc
OUT1
OUT2
FG
Vss
P/I/O
Pin# Description
www.DataSheet4U.comP Positive Power Supply
O Output Pin #1
O Output Pin #2
O Frequency Generator
P Ground
Supply Voltage
Vcc -------------------------- 20V
Output / FG breakdown Voltage Vout/Vfg --------------------- 25V
Magnetic flux density
B -------------------------- Unlimited
Reverse Protection Voltage
Vr -------------------------- 20V
Output Current continuous Ic -------------------------- 300mA
Hold current Ih ------------------------ 500mA
Peak current Ip ------------------------- 1.2A
FG ON Current (continuous)
Operating Temperature Range
Storage Temperature Range
If -------------------------- 20mA
Ta -------------------------- (-20˚C to +100˚C)
Ts -------------------------- (-65˚C to +150˚C)
Package Power Dissipation
Pd -------------------------- 350mw for SOT-25
500mw for SIP-4L
SIP-5L
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2005/8/12
2
DataSheet 4 U .com
www.DataSheet4U.com


Part Number WSH411
Description Hall Effect Sensor IC with Thermal Lock Protection and Auto Restart Function
Maker Winson Semiconductor
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WSH411 Datasheet PDF






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