OH1881 Hall effect Latching IC Order Information PN OH1881 -40～125℃ Operate temperature Package 1000pcs/bag General Description Description:: OH1881Hall effect Latching Switch IC are composed of a reverse protector, voltage regulator, Hall voltage generator, differential amplifier, Schmitt trigger and an open-collector output on a single silicon chip. ICs can convert the changeable magnetic field signal into digital voltage output. Features Applications � High reliability � Non-contact switch � anti-environmental stress � Speed measurement � Reverse Polarity Protection � Position detection � Interfacing with All Kinds of Logic Circuits � Brushless DC motor Absolute Maximum Ratings （TA=25℃） Supply VoltageVCC··············4.5-24V Operating Temperature Range TA ············-40～125℃ Output Current IO···················25mA Storage Temperature RangeTS ················-55～150℃ Magnetic-electrical Transfer Characteristics VOUT Functional Block Diagram Diagram： Pin1.VCC VOH REG BH Pin3.Vout AMP m BRP 0 BOP B Pin2.GND Electrical Characteristics (Ta= 25°C ) Parameter Symbol Supply Voltage VCC Output Saturation Voltage VOL Output Leakage Current IOH Supply Current ICC Conditions VCC=4.5V, RL=960Ω, B≥BOP Vo=Vccmax , B≤BRP VCC=VCCMAX OC OUTPUT Value Unit Min Typ Max 4.5 - 24 V - 200 400 mV - 1 10 μA - 6 - mA Output Rise Time tr Vcc=12V, RL=820Ω, - 0.3 1.5 μS Output Falling Time tf CL=20pF - 0.3 1.5 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] OH1881 Hall effect Latching IC Magnetic Characteristics (Ta= 25°C ) (1mT = 10 Gauss) Min Value Typ Max BOP 1 - 6 mT Release Point BRP -6 - -1 mT Hysteresis BH - 7 - mT Parameter symbol Operate Point Test Circuit for Reference Reference： Unit Pin Descriptions Descriptions：1.VCC 2. GND 3.Vout Caution: Vcc 1)when installing, please minimize mechanical stress on the IC shell and leads. 2)Welding temperature should be lower than Vout 260 ℃, less than 3 seconds. 3)IC is OC output, so a pull-up resistor RL CL RL=820Ω CL=20 pF connected pin 1 (power) and pin 3 (output) is necessary. Dimension unit:mm) Dimension（unit:mm) 1 2 3 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]