WSH130 Operates from 2.4V to 26V supply voltage with reverse voltage protection Operates with magnetic fields from DC to 15kHz On-chip Hall Sensor On-chip temperature compensation circuitry minimizes shifts in on and off points and hysteresis over temperature and supply voltage Ideal sensor for speed measurement, revolution counting, positioning, and DC brushless motors Specifications : Switching type: latch or non-latch type (S pole) Latch: On(L) with magnetic South pole and Off (H) with North pole Non-Latch: On (L) with magnetic South pole and Off(H) without magnetic field Functional Description : WSH130 is designed to integrate Hall sensor with output driver 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 and a open-collector output driver capable of sinking up to 20mA current load. An on-chip protection resistor 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. WSH130 are rated for operation over temperature range from –40˚ C to 125 ˚C and voltage ranges from 2.4V to 26V. Name Vdd Gnd Vout P/I/O P O O Pin# Description Positive Power Supply Ground Output Pin Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2005/8/25 WSH130 Supply Voltage Vcc -------------------------- 26V Output breakdown Voltage Magnetic flux density Vout(breakdown) ---------------- 30V B -------------------------- Unlimited Reverse Protection Voltage Vr Output ON Current (continuous) Ic --------------------------------------------------- 26V 25mA Operating Temperature Range Storage Temperature Range Ta Ts --------------------------------------------------- (-40˚C to +125˚C) (-65˚C to +150˚C) Package Power Dissipation Pd -------------------------- Characteristic Supply Voltage Output Saturation Voltage Output Leakage Current Supply Current Output Rise Time Output Falling Time 500mw (T=+25˚C, Vcc=2.4V to 26V) Symbol Test Conditions Min Typ Max Units Vcc V Vout Vcc=12V,Ic=10mA V (sat) B > Bop Ileakage Vcc=12V, B<Brp UA < Isupply Vcc=12V,Output Open Tr Vcc=12V,RL=2K CL=20Pf Tf Vcc=12V,RL=2K CL=20Pf mA 1.0 Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2005/8/25 Us Us WSH130 Characteristic Symbol Grade Operating Point Bop Min. Typ. Max. Unit A + 30 + 50 Guass B + 50 +70 Guass + 150 Guass NL Release Point Hysteresis Window Brp Bhys A -50 - 30 Guass B -70 -50 Guass NL 0 Guass 30 200 Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2005/8/25 Guass WSH130 Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2005/8/25 WSH130 Fan Application: Magnetic detector: Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2005/8/25