WSH41F Unipolar Hall Switch IC with Complementary Outputs 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 400mA for driving large load. Lower current change rate reduces the peak output voltages during switching. 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. 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 125˚C and voltage ranges from 2.8V to 20V. Pin Descriptions: SIP-4L Name P/I/O Pin# Vcc P 1 OUT1 O 2 OUT2 O 3 GND P 4 Description Positive Power Supply Output Pin #1 Output Pin #2 Ground Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson Semiconductor Corp.2010/3/9 1 WSH41F Absolute Maximum Rating (at Ta=25˚ C) Supply Voltage Vcc -------------------------Output breakdown Voltage Vout -------------------------Magnetic flux density B -------------------------Reverse Protection Voltage Vr -------------------------Output Current continuous Ic -------------------------Hold current Ih -----------------------Peak current Ip ------------------------- 20V 26V Unlimited 20V 300mA 400mA 800mA Operating Temperature Range Storage Temperature Range Package Power Dissipation (-20˚C to +125˚C) (-65˚C to +150˚C) 500mw for SIP-4L Ta -------------------------Ts -------------------------Pd -------------------------- Electrical Characteristics: (T=+25˚C, Vcc=2.8V to 20V) Characteristic Symbol Test Conditions Min Typ Max Units Supply Voltage Vcc ─ V 2.8 ─ 20 Output Saturation Vout(sat Vcc=18V, Ic=200mA ─ 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 Rising Time Tr us Vcc=12V, RL=820Ω ─ 3.0 10 CL=20Pf Output Falling Time Tf us Vcc=12V, RL=820Ω ─ 0.3 1.5 CL=20Pf Output Time us △t Vcc=12V, RL=820Ω ─ 0.3 3 Differential CL=20Pf Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson Semiconductor Corp.2010/3/9 2 WSH41F Function Block: Magnetic Characteristics: Characteristics Symbol Quantity Operate Point Bop None latch Release Point Brp None latch Ta= -20˚C to +125˚C Min Typ. Max 150 20 Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson Semiconductor Corp.2010/3/9 3 Unit Gauss Gauss WSH41F Ordering Information: SIP- 4L: WSH41FC-XPAN5 None latch : 150 Gauss Package Information: Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson Semiconductor Corp.2010/3/9 4