Datasheet > OH277A

OH277A

更新时间： 2024-01-15 19:57:27

品牌	Logo	应用领域
OHHALLSENSOR		输出元件
页数	文件大小	规格书
5页	190K
描述
COMPLEMENTARY OUTPUT HALL EFFECT LATCH

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OH277A 数据手册

OH277

COMPLEMENTARY OUTPUT HALL EFFECT LATCH

Order Information

PN OH277A/B/C Temperature Range

-20 to 85°C

Package 1000pcs/bag

General Description: OH277 is an integrated Hall sensor with output driver

designed for electronic commutation of brushless DC motor applications. The

device includes an onchip Hall sensor for magnetic sensing, an amplifier that

amplifies the Hall voltage, a Schmitt trigger to provide switching hysteresis for

noise rejection, a temperature compensation circuit to compensate the temperature drift of

Hall sensitivity and two complementary open-collector drivers for sinking large load

current. It also includes an internal band-gap regulator which is used to provide bias

voltage for internal circuits. Placing the device in a variable magnetic field, if the magnetic

flux density is larger than threshold BOP, the pin DO will be turned low (on) and pin DOB

will be turned high (off). This output state is held until the magnetic flux density reverses

and falls below BRP, then causes DO to be turned high (off) and DOB turned low (on).

Features

Applications

· On-Chip Hall Sensor

· Dual-Coil Brushless DC Motor

· 3.5V to 16V Supply Voltage

· Dual-Coil Brushless DC Fan

· 400mA (avg) Output Sink Current

· Revolution Counting

· Reversed Supply Voltage Protection

· Speed Measurement

· -20oC to 85oC Operating Temperature

· Low Profile TO-94 (SIP-4L) Package

· ESD Rating: 300V (Machine Model)

Functional Block Diagram

Page 1

Nanjing Ouzhuo Technology co., Ltd

www.ohhall.com

www.zbling.com

Tel：86-25-52312738，86-25-83247886 FAX: 86-25-52312738

E-mail: ohhall@163.com

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