BCD Semiconductor Manufacturing Limited AH477
The AH477 is an integrated Hall sensor with output driver designed for electronic commutation of brushless DC motor applications. The device includes an on-chip Hall sensor for magnetic sensing, an amplifier that amplifies the Hall voltage, a comparator to provide switching hysteresis for noise rejection, a bi-directional drivers for sinking and driving large current load. It also includes an internal bandgap regulator to provide temperature compensated bias for internal circuits and allows a wide operating supply voltage range.| Part No. | AH477 |
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| Datasheet | AH477 Download |
| Manufacturer |  BCD Semiconductor Manufacturing Limited |
| Description | SINGLE PHASE HALL EFFECT LATCH |
| Buy | Stock & Price |
DESCRIPTION
Placing the device in a variable magnetic field, if the magnetic flux density is larger than threshold BOP, the DO is turned to sink and DOB is turned to drive. This output state is held until the magnetic flux density reverses and falls below BRP, then causes DO to be turned to driveand DOB turned to sink. AH477 Parametric Table Supply Voltage (V) Output Down Saturation Voltage (V) Output Up Saturation Voltage (V) Supply Current (mA) Hysteresis (Gauss) Package 4 to 20 0.25 1.0 14 70 TO-94FEATURES
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● On-Chip Hall Sensor Operating Voltage: 4V to 20V H-Bridge Output Drivers for Single Coil Internal Bandgap Regulator for Temperature Compensation Low Output Switching Current Noise -20oC to 85oC Operating Temperature Low Profile TO-94 (SIP-4L) Package ESD Rating: 3000V (Human Body Model) Benefits
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● Minimum External Components Good High Temperature Performance High Efficiency Rotate Reposefully
APPLICATIONS
●● Single-Coil Brushless DC Motor Single-Coil Brushless DC Fan Additional Available Materials
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● Samples Preliminary Datasheet Reliability Report ESD Report Nov.
