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| WSH41F Hall Effect Sensor IC with Complementary Output Drivers Features: Operate from 2.8V to 18V 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 400mA 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. General Description: WSH41F is designed to integrate Hall sensor with complementary output drivers and frequency generator together on the same chip, it is suitable for speed measurement, revolution counting, positioning. It includes a temperature compensated voltage regulator, a differential amplifier, a Hysteresis controller, two open-collector output drivers capable of sinking 400mA 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. 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. WSH41F are rated for operation over temperature range from -20 C to 125C and voltage ranges from 2.8V to 18V. In SOT-25 package, the built-in FG function can save fan system a lot of cost. It is a very economical solution when fan system need FG signal. Winson reserves the right to make changes to improve reliability or manufacturability. (c)Winson Semiconductor Corp.2003/11/20 1 WSH41F Pin Descriptions: SOT-25 Name P/I/O Pin# OUT1 O 1 Vss P 2 OUT2 O 3 FG O 4 VDD P 5 Pin Descriptions: SIP-4L Name P/I/O Pin# Vcc P 1 OUT1 O 2 OUT2 O 3 Vss P 4 Description Output Pin 1 Ground Output Pin 2 Frequency Generator Positive Power Supply Description Positive Power Supply Output Pin #1 Output Pin #2 Ground Absolute Maximum Rating (at Ta=25 C) Supply Voltage Vcc -------------------------- 18V Output / FG breakdown Voltage Vout/Vfg --------------------- 26V Magnetic flux density B -------------------------- Unlimited Reverse Protection Voltage Vr -------------------------- 20V Output Current continuous Ic -------------------------- 300mA Hold current Ih -----------------------400mA Peak current Ip ------------------------800mA FG ON Current (continuous) If -------------------------- 20mA Operating Temperature Range Storage Temperature Range Package Power Dissipation Ta -------------------------Ts -------------------------Pd -------------------------(-20C to +125C) (-65C to +150C) 350mw for SOT-25 500mw for SIP-4L Winson reserves the right to make changes to improve reliability or manufacturability. (c)Winson Semiconductor Corp.2003/11/20 2 WSH41F Electrical Characteristics: (T=+25C, Vcc=2.8V to 18V) Characteristic Symbol Test Conditions Min Typ Max Units Supply Voltage Vcc V 2.8 18 Output Saturation Vout(sat) Vcc=18V, Ic=200mA V 0.2 0.4 Voltage B > Bop FG Saturation Vfg(sat) Vcc=18V, If=10mA V 0.15 0.4 Voltage B > Bop Output Leakage Ileakage Vcc=18V, B < Brp uA <0.1 10 Current Supply Current Isupply Vcc=18V, Output & mA 13 25 FG Open Output / FG Rising Tr 3.0 us Vcc=12V, RL=820 10 Time CL=20Pf Output / FG Falling Tf us Vcc=12V, RL=820 0.3 1.5 Time CL=20Pf Output / FG Time us t Vcc=12V, RL=820 0.3 3 Differential CL=20Pf Function Block: Winson reserves the right to make changes to improve reliability or manufacturability. (c)Winson Semiconductor Corp.2003/11/20 3 WSH41F Magnetic Characteristics: Characteristics Operate Point Release Point Symbol Bop Brp Quantity None latch None latch 10 Min Ta= -20C to +90C Typ. Max 150 Unit Gauss Gauss Ordering Information: SIP- 4L: WSH41F-XPA5 SOT-25: WSH41F-XPB5 Elec. Grade None latch : 150 Gauss Winson reserves the right to make changes to improve reliability or manufacturability. (c)Winson Semiconductor Corp.2003/11/20 4 WSH41F Test Circuit: SIP-4L SOT-25 Winson reserves the right to make changes to improve reliability or manufacturability. (c)Winson Semiconductor Corp.2003/11/20 5 WSH41F Package Information: SOT-25 Winson reserves the right to make changes to improve reliability or manufacturability. (c)Winson Semiconductor Corp.2003/11/20 6 WSH41F SIP-4L Winson reserves the right to make changes to improve reliability or manufacturability. (c)Winson Semiconductor Corp.2003/11/20 7 |
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