OH443 Hall Effect Unipolar IC For High Temperature Order Information Part number Operate temperature OH443 -40～150℃ Package TO-92S 1000pcs/bag General Description OH443 includes an on-chip Hall voltage generator for magnetic sensing, an amplifier to amplify Hall voltage, and a comparator to provide switching hysteresis for noise rejection, and an open-collector output pre-driver. While the magnetic flux density (B) is larger than threshold Bop, the OUT pin turns on (low). When B < Brp, the OUT pin go into “ off ” state. Features Applications � High reliability � Speed measurement � High sensitivity � Home appliances � good temperature performance � Position detection � anti-environmental stress � Flow measurement Absolute Maximum Ratings （TA=25℃） Supply Voltage VCC··············4-30V Operating Temperature Range TA ········-40 ～ 150℃ Output Current IO···················50mA Storage Temperature RangeTS ················-55～150℃ 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] OH443 Hall Effect Unipolar IC For High Temperature Magnetic Characteristics (VCC=4～30V Ta= 25°C ) (1mT = 10 Gauss) Value Parameter symbol Unit Min Typ Max Operate Point BOP - - 20 mT Release Point BRP 2 - - mT Hysteresis BH 3 - 6 mT Test Circuit for Reference Reference： 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. unit:mm) Dimension Dimension（unit:mm) 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]