U651

UTC U651 LINEAR INTEGRATED CIRCUIT SINGLE OUTPUT HALL EFFECT LATCH GENERAL DESCRIPTION The UTC U651 is a Integrated Hall sensor with latch designed for electronic commutation of brushless DC motor applications. The device includes an on-chip Hall voltage generator for magnetic sensing, a comparator that amplifies the Hall voltage, and a Schmitt trigger to provide switching hysteresis for noise rejection, and open-collector output. An internal bandgap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range. FEATURES *3.5V to 20V operation *On-chip Hall sensor with two different sensitivity and hysteresis settings. *Internal bandgap regulator allows temperature compensated operations and a wide operating voltage range. *Open-Collector 25mA Output. *Reverse Polarity Protection. BLOCK DIAGRAM 1 Vcc 1 TO92S 1: Vcc 2: GND 3: OUTPUT REG. Hall Sensor 3 OUTPUT 2 GROUND PIN DESCRIPTIONS NAME P/I/O Vcc P Vss P DO O PIN NO. 1 2 3 DESCRIPTION Positive Power Supply Ground OUTPUT Pin UTC UNISONIC TECHNOLOGIES CO. LTD 1 QW-R118-001,B UTC U651 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS(Ta=25°C ) CHARACTERISTIC SYMBOL Supply Voltage Vcc Reverse Vcc Polarity Voltage Magnetic flux density VRCC B Output OFF Voltage Vce Output ON Current Ic Operating Temperature Range Ta Storage Temperature Range Ts Package Power Dissipation Pd VALUE 20 -20 Unlimited 30 30 0 ~ 70 -65 ~ 150 400 UNIT...