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| WSH41FC Hall Effect Sensor IC with Complementary Output Drivers and Frequency Generator 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. Available in rugged low profile SOT-25 , SIP-4L,SIP-5L packages. Built-in FG output. Built-in protection diode for reverse power supply fault. General Description: WSH41FC 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, 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 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. WSH41FC are rated for operation over temperature range from -20 C to125C and voltage ranges from 2.8V to 20V. 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, 2003 Jan WSH41FC 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 P O O O P Pin# Description Positive Power Supply Output Pin #1 Output Pin #2 Frequency Generator Ground Supply Voltage Vcc -------------------------- 20V Output / FG breakdown Voltage Vout/Vfg --------------------- 25V Magnetic flux density B -------------------------- Unlimited Reverse Protection Voltage Output Current continuous Hold current Peak current FG ON Current (continuous) Operating Temperature Range Storage Temperature Range Package Power Dissipation Vr Ic Ih Ip If Ta ---------------------------------------------------------------------------------------------------------------------------------------------------20V 300mA 400mA 800mA 20mA (-20C to +125C) (-65C to +150C) 350mw for SOT-25 500mw for SIP-4L SIP-5L Winson reserves the right to make changes to improve reliability or manufacturability. (c)Winson, 2003 Jan Ts -------------------------Pd -------------------------- WSH41FC (T=+25C, Vcc=2.8V to 20V) Symbol Test Conditions Min Typ Max Units Vcc V Vout(sat) Vcc=20V, Ic=200mA V B > Bop Vfg(sat) Vcc=20V, If=10mA V B > Bop Ileakage Vcc=20V, B < Brp UA < MA 3.0 Us Us Us Characteristic Supply Voltage Output Saturation Voltage FG Saturation Voltage Output Leakage Current Supply Current Isupply Vcc=20V, Output & FG Open Output / FG Rising Tr Vcc=12V, RL=820 Time CL=20Pf Output / FG Falling Tf Vcc=12V, RL=820 Time CL=20Pf Output / FG Time t Vcc=12V, RL=820 Differential CL=20Pf Winson reserves the right to make changes to improve reliability or manufacturability. (c)Winson, 2003 Jan WSH41FC Characteristics Operate Point Symbol Bop Quantity Grade A Grade B Grade C Grade A Grade B Grade C Min Release Point Hysteresis Window Brp Bop-Brp Ta= -20C to +90C Typ. 30 40 70 -50 -30 -70 -40 -120 -70 40 Unit Max 50 70 120 Gauss Gauss 150 Gauss SIP- 4L: WSH41FC-XPAN SIP- 5L: WSH41FC-XPCN SOT-25: WSH41FC-XPDN Elec. Grade SIP-4L & SIP-5L: 1: A Grade (50 Gauss) 2: B Grade (70 Gauss) Elec. Grade 3: C Grade (120 Gauss) SOT-25: 1: A Grade (50 Gauss) 2: B Grade (70 Gauss) N: No-Lead process Winson reserves the right to make changes to improve reliability or manufacturability. (c)Winson, 2003 Jan WSH41FC SIP-4L SIP-5L Winson reserves the right to make changes to improve reliability or manufacturability. (c)Winson, 2003 Jan WSH41FC SOT-25 Winson reserves the right to make changes to improve reliability or manufacturability. (c)Winson, 2003 Jan WSH41FC SOT-25 Winson reserves the right to make changes to improve reliability or manufacturability. (c)Winson, 2003 Jan WSH41FC SIP-4L Winson reserves the right to make changes to improve reliability or manufacturability. (c)Winson, 2003 Jan WSH41FC SIP-5L Winson reserves the right to make changes to improve reliability or manufacturability. (c)Winson, 2003 Jan WSH41FC SOT-25 Figure 1. SIP-4L Figure 2. Winson reserves the right to make changes to improve reliability or manufacturability. (c)Winson, 2003 Jan WSH41FC SIP-5L Figure 3. Winson reserves the right to make changes to improve reliability or manufacturability. (c)Winson, 2003 Jan |
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