OH921 HIGH SENSITIVITY CMOS HALL-EFFECT LATCH Order Information Package Temperature Range Part Number Marking ID Packing Type TO92S-3 -40 to 125°C OH921-T 920 Bulk SOT23-3 -40 to 125°C OH921-S GS6 Tape & Reel General Description Description:: The OH921 is a Hall-effect latch designed in mixed signal CMOS technology. It is quite suitable for use in automotive, industrial and consumer applications. Superior high-temperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device over-molding, temperature dependencies, and thermal stress. The device integrates a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, schmitt trigger, and is directly drivable by the output. Features Applications • Wide Operating Voltage Range from 3.5 to 24V • Brushless DC Motor Commutation • Symmetrical Switch Points • Brushless DC Fan • Chopper-stabilized Amplifier Stage • Solid-state Switch • Superior Temperature Stability • Revolution Counting • Compact Size • Speed Detection • Built-in Pull-up Resistor • High Sensitivity and Unconnected Switch • ESD Rating: 3500V (Human Body Model) Absolute Maximum Ratings （TA=25℃） Supply VoltageVCC··············3.5-28V Output Current IO···················25mA Operating Temperature Range TA ·····-50～150℃ Storage Temperature RangeTS ··········-65～150℃ Nanjing Ouzhuo Technology co., Ltd Tel：86-25-52312738，86-25-83247886 Functional Block Diagram Page 1 www.ohhall.com FAX: 86-25-52312738 www.zbling.com E-mail: [email protected] OH921 HIGH SENSITIVITY CMOS HALL-EFFECT LATCH Electrical Characteristics Vcc =12V, TA=25°C, unless otherwise specified Parameter Symbol Supply Voltage VCC Output Saturation Voltage VSAT Output Leakage Current Conditions Value Unit Min Typ Max 3.5 12 24 V IOUT=20mA, B>BOP - 185 500 mV ILEAKAGE VCC=VOUT=24V, B<BRP - 0.1 10 μA Supply Current ICC VCC=12V - 3 5 mA Output Rise Time tr - 0.4 2 μS - 0.4 2 μS Output Falling Time CL=20pF tf Magnetic Characteristics Vcc =12V, TA=25°C, (1mT = 10 Gauss) Min Value Typ Max BOP 0.5 2.2 4 mT Release Point BRP -4 -2.2 -0.5 mT Hysteresis BH - 4.5 - mT Parameter symbol Operate Point Unit Typical Application Application： 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] OH921 HIGH SENSITIVITY CMOS HALL-EFFECT LATCH Package Type TO-92S-3 SOT-23-3 Parameter Test condition Output South Pole B＞BOP Low North Pole B＜BRP High South Pole B＞BOP High North Pole B＜BRP Low Typical Performance Characteristics BOP/BRP/BHYS vs. VCC Nanjing Ouzhuo Technology co., Ltd Tel：86-25-52312738，86-25-83247886 BOP/BRP/BHYS vs. TA Page 3 www.ohhall.com FAX: 86-25-52312738 www.zbling.com E-mail: [email protected] OH921 HIGH SENSITIVITY CMOS HALL-EFFECT LATCH Mechanical Dimension unit:mm(inch) TO-92S-3 Nanjing Ouzhuo Technology co., Ltd Tel：86-25-52312738，86-25-83247886 Page 4 www.ohhall.com FAX: 86-25-52312738 www.zbling.com E-mail: [email protected] OH921 HIGH SENSITIVITY CMOS HALL-EFFECT LATCH SOT23-3 Nanjing Ouzhuo Technology co., Ltd Tel：86-25-52312738，86-25-83247886 Page 5 www.ohhall.com FAX: 86-25-52312738 www.zbling.com E-mail: [email protected]