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AH477 Datasheet(PDF) 1 Page - BCD Semiconductor Manufacturing Limited |
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AH477 Datasheet(HTML) 1 Page - BCD Semiconductor Manufacturing Limited |
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1 / 10 page  SINGLE PHASE HALL EFFECT LATCH AH477 1 Oct. 2009 Rev. 1. 3 BCD Semiconductor Manufacturing Limited Data Sheet General Description The AH477 is an integrated Hall sensor with H- bridged output driver designed for brushless DC motor applications. The device includes an on-chip Hall sen- sor 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 tem- perature compensated bias for internal circuits and allows a wide operating supply voltage range. 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 drive and DOB turned to sink. AH477 is available in TO-94 (SIP-4L) package. Features · On-Chip Hall Sensor · Operating Voltage: 3.5V to 18V · 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) Applications · Single-Coil Brushless DC Motor · Single-Coil Brushless DC Fan Figure 1. Package Type of AH477 TO-94 |
Similar Part No. - AH477_09 |
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Similar Description - AH477_09 |
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