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OH137
Unipolar Hall Effect Switch IC
Order Information PN OH137 Operate tempe...
Free Datasheet http://www.Datasheet4U.com
OH137
Unipolar Hall Effect Switch IC
Order Information PN OH137 Operate temperature -40~85℃ Package 1000pcs/bag General Description: OH137 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 � 4.5V to 24V DC operation voltage � Speed measurement � Open-Collector pre-driver � Home appliances � 25mA maximum sinking output current. � Position detection � Reverse Polarity Protection � Flow measurement Absolute Maximum Ratings (TA=25℃) Supply VoltageVCC··············4.5-24V Operating Temperature Range TA ···········-40~85℃ Output Current IO···················25mA Storage Temperature RangeTS ················-55~150℃ Magnetic-electrical Transfer Characteristics Functional Block Diagram:
VOUT
Pin1.VCC
VOH BH
REG Pin3.Vout
AMP
m
VOL 0 BRP BOP B
Pin2.GND
Electrical Characteristics (Ta= 25°C ) Value Parameter Supply Voltage Output Saturation Voltage Output Leakage Current Supply Current Output Rise Time Output Falling Time Symbol VCC VOL IOH ICC tr tf Vcc=4.5V, RL=2KΩ, B≥BOP Vout=Vccmax,B≤BRP VCC=Vccmax OC output Vcc=12V, RL=820Ω, CL=20pF
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Conditions Min 4.5 Typ 200 1.0 3 0.12 0.14 Max 24 400 10 5 1.20 1.40
Unit V mV μA...