SS249 CMOS Omnipolar High Sensitivity Micropower Hall Switch Packages Features and Benefits Solid-State Reliability much better than reed – Switch – Omnipolar, output switches with absolute value – – of North or South pole from magnet Operation from 3.5V to 24V High sensitivity for direct reed switch replacement applications 3 pin SOT23 (suffix SO) 3 pin SIP (suffix UA) Functional Block Diagram Application Examples – Solid state switch – Speed detection – Interrupter – Magnet proximity sensor for reed switch replacement General Description: The SS249 Omnipolar Hall effect sensor IC is fabricated from mixed signal CMOS technology .It incorporates advanced chopper-stabilization techniques to provide accurate and stable magnetic switch points. The output transistor of the SS249 will be latched on (BOP) in the presence of a sufficiently strong South or North magnetic field facing the marked side of the package. The output will be latched off (BRP) in the absence of a magnetic field. 1 V2.10 May 1, 2012 SS249 CMOS Omnipolar High Sensitivity Micropower Hall Switch Typical Application Circuit Automotive and Severe Protection Circuit Typical Three-Wire Application Circuit Environment R1:100 C1 VDD SS249 C1 R2 VDD D1 OUT Z1 SS249 R2 OUT C2 C2 GND GND SEC's pole-independent sensing technique allows for operation with either a north pole or south pole magnet orientation, enhancing the manufacturability of the device. The state-of-the-art technology provides the same output polarity for either pole face. It is strongly recommended that an external bypass be connected (in close proximity to the Hall sensor) between the supply and ground of the device to reduce both external noise and noise generated by the chopper-stabilization technique. This is especially true due to the relatively high impedance of battery supplies. Internal Timing Circuit Current Period Iaw Sample & Output Latched Iav Isp Awake Taw: 175μs Sleep Tsl: 70ms 0 Time 2 V2.10 May 1, 2012 SS249 CMOS Omnipolar High Sensitivity Micropower Hall Switch Pin Definitions and Descriptions SOT Pin № SIP Pin № Name Type Function 1 2 3 VDD OUT GND Supply Output Ground Supply Voltage pin Open Drain Output pin Ground pin 1 3 2 Table 1: Pin definitions and descriptions Absolute Maximum Ratings Parameter Symbol Supply Voltage (operating) V DD Supply Current I DD Output Voltage V OUT Output Current I OUT Operating Temperature Range T A Storage Temperature Range TS ESD Sensitivity Table 2: Absolute maximum ratings Value Units 6 5 6 5 -40 to 85 -50 to 150 4000 V mA V mA °C °C V Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. DC Electrical Characteristics DC Operating Parameters: T A = 25℃, V DD = 2.75V. Parameter Symbol Operating Voltage V DD Supply Current I DD Output Current I OUT Saturation Voltage V SAT Awake mode time T AW Sleep mode time T SL Table 3: DC electrical characteristics Test Conditions Min Typ Max Units Operating Average 2.5 3 5 5.5 V µA mA V µS mS I OUT = 1mA Operating Operating 3 1.0 0.4 175 70 V2.10 May 1, 2012 SS249 CMOS Omnipolar High Sensitivity Micropower Hall Switch Magnetic Characteristics Output Voltage (V) 3.0 OFF 2.5 2.0 B OPN 1.5 B RPS B OPS B RPN 1.0 0.5 0 ON -80 -60 -40 -20 0 20 40 60 80 Magnetic Flux (Gauss) Operating Parameters: T A = 25°C, V DD = 2.75V DC SS259 Parameter Symbol Min Type Max Units Operating Point Release Point Hysteresis B OP B RP B HYST +/-5 - +/-35 +/-21 14 +/-60 - Gs Gs Gs Table 4: Magnetic Specifications ESD Protection Human Body Model (HBM) tests according to: Mil. Std. 883F method 3015.7 Limit Values Parameter Symbol Unit Min Max ESD Voltage V ESD 4 kV 4 Notes V2.10 May 1, 2012 SS249 CMOS Omnipolar High Sensitivity Micropower Hall Switch Performance Characteristics 5 V2.10 May 1, 2012 SS249 CMOS Omnipolar High Sensitivity Micropower Hall Switch Unique Features CMOS Hall IC Technology The chopper stabilized amplifier uses switched capacitor techniques to eliminate the amplifier offset voltage, which, in bipolar devices, is a major source of temperature sensitive drift. CMOS makes this advanced technique possible. The CMOS chip is also much smaller than a bipolar chip, allowing very sophisticated circuitry to be placed in less space. The small chip size also contributes to lower physical stress and less power consumption. Installation Comments Consider temperature coefficients of Hall IC and magnetic, as well as air gap and life time variations. Observe temperature limits during wave soldering. Typical IR solder-reflow profile: – No Rapid Heating and Cooling. – Recommended Preheating for max. 2minutes at 150°C – Recommended Reflowing for max. 5seconds at 240°C ESD Precautions Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures whenever handling semiconductor products. 6 V2.10 May 1, 2012 SS249 CMOS Omnipolar High Sensitivity Micropower Hall Switch Package UA, 3-Pin SIP: 7 V2.10 May 1, 2012 SS249 CMOS Omnipolar High Sensitivity Micropower Hall Switch Package SOT, 3-Pin SOT-23: SOT-23 Package Hall Location: Ordering Information Part No. Pb-free Temperature Code Package Code Packing SS259ESOT YES -40°C to 85°C SOT-23 7-in. reel, 3000 pieces/reel SS259EUA YES -40°C to 85°C TO-92 Bulk, 1000 pieces/bag SS259KSOT YES -40°C to 125°C SOT-23 7-in. reel, 3000 pieces/reel SS259KUA YES -40°C to 125°C TO-92 Bulk, 1000 pieces/bag SS259LSOT YES -40°C to 150°C SOT-23 7-in. reel, 3000 pieces/reel SS259LUA YES -40°C to 150°C TO-92 Bulk, 1000 pieces/bag 8 V2.10 May 1, 2012