AH266Z4-AG1 Diodes Incorporated

Data Sheet HIGH VOLTAGE HALL EFFECT LATCH AH266 General Description Features The AH266 is an integrated Hall sensor with output On-Chip Hall Sensor driver designed for electronic commutation of brush- 4V to 30V Supply Voltage less DC motor applications. The device includes an on- 400mA (avg) Output Sink Current chip Hall sensor for magnetic sensing, an amplifier Build in Protection Diode for Reverse Power that amplifies the Hall voltage, a Schmitt trigger to Connecting provide switching hysteresis for noise rejection and o o -20 C to 85 C Operating Temperature two complementary darlington open-collector drivers Low Profile TO-94 (SIP-4L) Package for sinking large load current. It also includes an inter- Build in Over Temperature Protection Function nal band-gap regulator which is used to provide bias voltage for internal circuits and allows a wide ESD Rating: 300V (Machine Model) operating supply voltage ranges. Applications Placing the device in a variable magnetic field, if the magnetic flux density is larger than threshold B , the OP 12V/24V Dual-Coil Brushless DC Motor/Fan pin DO will be turned low (on) and pin DOB will be Power Supply and Switchboard turned high (off). This output state is held until the Communications Facilities magnetic flux density reverses and falls below B RP, Industrial Equipment then causes DO to be turned high (off) and DOB turned low (on). AH266 is available in TO-94 (SIP-4L) package. TO-94 Figure 1. Package Type of AH266 Nov. 2009 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 1 Data Sheet HIGH VOLTAGE HALL EFFECT LATCH AH266 Pin Configuration Z4 Package (TO-94) 4 GND 3 DOB 2 DO 1 V CC Figure 2. Pin Configuration of AH266 (Front View) Pin Description Pin Number Pin Name Function V 1 Supply voltage CC 2 DO Output 1 3 DOB Output 2 4 GND Ground Nov. 2009 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 2