ATS177系列双极锁存霍尔效应集成传感器：是由一个稳压电源,霍尔电压发生器,差分放大器,施密特触发器和输出放大器组成的磁敏传感电路。
产品特点:反向电压保护/电源电压范围宽/易焊性好。
典型应用场合:直流无刷风机/直流无刷电机/高灵敏的无触点开关。
电源电压4.5--20V。
DATASHEET PDF
ATS177.pdf
Features
- 3.5V to 20V DC operation voltage - Temperature compensation - Wide operating
voltage range - Open-Collector pre-driver - 25mA maximum sinking output current.
- Reverse polarity protection - Package ： SIP3 ， SOT23
Applications
- Brush-less DC Motor - Brush-less DC Fan - Revolution counting - Speed measurement
General Description
ATS177 is an integrated Hall effect latched sensor designed for electronic commutation
of brush-less 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. If
a magnetic flux density larger than threshold Bop ，DO is turned on （low ）。 The
output state is held until a magnetic flux density reversal falls below Brp causing
DO to be turned off （high）。
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