OH44EW Unipolar Hall Effect IC In SMD Package Order Information PN OH44EW Operate temperature -40～150℃ Package 1000pcs/reel General Description Description:: OH44EW is a switched Hall-Effect IC which is for contactless switching applications. The device includes an on-chip Hall voltage generator for magnetic sensing, an amplifier that amplifies the Hall voltage, a schmitt trigger to provide switching hysteresis for noise rejection, and an open-collector output. Features Applications � High reliability � Speed measurement � good temperature performance � Home appliances � anti-environmental stress � Position detection � Reverse Polarity Protection � Flow measurement Absolute Maximum Ratings （TA=25℃） Supply VoltageVCC··············4-30V Operating Temperature Range TA ········-40 ～ 150℃ Output Current IO···················50mA Storage Temperature RangeTS ················-65～150℃ Magnetic-electrical Transfer Characteristics Functional Block Diagram Diagram： VOUT Pin1.VCC VOH REG BH Pin3.Vout AMP m VOL 0 BRP BOP B Pin2.GND Electrical Characteristics (Ta= 25°C ) Value Parameter Symbol Conditions Unit Min Typ Max 4 - 30 V Supply Voltage VCC Output Saturation Voltage VOL Vcc=4.5V, Iout=20mA， B≥BOP - 200 400 mV Output Leakage Current IOH Vout=24V，B≤BRP - 1.0 10 μA Supply Current ICC VCC=Vccmax OC output - 5 - mA Output Rise Time tr - 0.2 2.0 μS Output Falling Time tf Vcc=12V, RL=820Ω, CL=20pF - 0.18 2.0 μS Nanjing Ouzhuo Technology co., Ltd Tel：86-25-52312738，86-25-83247886 Page 1 www.ohhall.com FAX: 86-25-52312738 www.zbling.com E-mail: [email protected] OH44EW Unipolar Hall Effect IC In SMD Package Magnetic Characteristics (Ta= 25°C ) (1mT = 10 Gauss) Value Parameter symbol Unit Min Typ Max Operate Point BOP - - 20 mT Release Point BRP 1 - - mT Hysteresis BH - 6 - mT unit:mm) Dimension Dimension（unit:mm) Pin Descriptions Descriptions：1.VCC 2. GND 3.Vout Caution: 1)when installing, please minimize mechanical stress on the IC shell and leads. 2)Welding temperature should be lower than 260 ℃, less than 3 seconds. 3)IC is OC output, so a pull-up resistor connected pin 1 (power) and pin 3 (output) is necessary. Nanjing Ouzhuo Technology co., Ltd Tel：86-25-52312738，86-25-83247886 Page 2 www.ohhall.com FAX: 86-25-52312738 www.zbling.com E-mail: [email protected]