Datasheet > AH3781

AH3781

更新时间： 2023-12-06 20:06:28

品牌	Logo	应用领域
美台 - DIODES		/
页数	文件大小	规格书
13页	481K
描述
28V Resistive pull-up Hall Effect Latch

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中文翻译

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AH3781 数据手册

AH3781

HIGH-VOLTAGE HIGH-SENSITIVITY HALL EFFECT LATCH

WITH INTERNAL PULL-UP RESISTOR

Description

Pin Assignments

The AH3781 is a high-voltage, high-sensitivity Hall Effect latch IC

with internal pull-up resistor designed for commutation of brushless

DC motors, flow meters, linear encoders and position sensors in

industrial, consumer home appliance and personal care applications.

To support a wide range of demanding applications, the design is

optimized to operate over the supply range of 3.0V to 28V. With

chopper stabilized architecture and an internal bandgap regulator to

provide temperature compensated supply for internal circuits, the

AH3781 provides a reliable solution over the whole operating range.

For robustness and protection, the device has a Zener clamp on the

supply. The output has an overcurrent limit and a Zener clamp.

(Top View)

3 OUTPUT

GND 2

1 V_DD

SOT23

(Top View)

The internally pulled-up output can be switched on with South pole of

sufficient strength and switched off with North pole of sufficient

strength. When the magnetic flux density (B) perpendicular to the part

marking surface is larger than the operate point (B_OP) the output is

switched on (pulled low). The output is held latched until magnetic flux

density reverses and becomes lower than the release point (B_RP).

3. OUTPUT

2. GND

V_DD

SIP-3

Applications

Features

•

Brushless DC Motor Commutation

Revolution Per Minute (RPM) Measurement

Flow Meters

•

Bipolar Latch Operation (South Pole: On, North Pole: off)

3.0V to 28V Operating Voltage Range

High Sensitivity: B_OPand B_RPof +25G and -25G Typical

Internally Pull-up Resistor on the Output Pin

Output Overcurrent Limit

Angular and Linear Encoder and Position Sensors

Contactless Commutation, Speed Measurement and Angular

Position Sensing/Indexing in Consumer Home Appliances, Office

Equipments and Industrial Applications

Chopper Stabilized Design Provides

Superior Temperature Stability

Minimal Switch Point Drift

Enhanced Immunity to Stress

•

Good RF Noise Immunity

Zener Clamp on Supply and Output Pins

-40°C to +125°C Operating Temperature

ESD (HBM): 6kV

Industry Standard SOT23 and SIP-3 Packages

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

Halogen and Antimony Free. “Green” Device (Note 3)

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"

and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

1 of 13

www.diodes.com

September 2015

AH3781

Document number: DS37903 Rev. 1 - 2

12 3 4 5 6 7...13

中文翻译

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与AH3781相关器件

型号	品牌	获取价格	描述	数据表
AH3781-P-B	DIODES	获取价格	Hall Effect Sensor, -4mT Min, 4mT Max, 30-55mA, Rectangular, Through Hole Mount, GREEN, SI
AH3781-SA-7	DIODES	获取价格	Hall Effect Sensor, -4mT Min, 4mT Max, 30-55mA, Rectangular, Surface Mount, GREEN, SOT-23,
AH3782	DIODES	获取价格	HIGH-VOLTAGE, HIGH-SENSITIVITY HALL EFFECT LATCH WITH INTERNAL PULL-UP RESISTOR
AH3782-P-7	DIODES	获取价格	HIGH-VOLTAGE, HIGH-SENSITIVITY HALL EFFECT LATCH WITH INTERNAL PULL-UP RESISTOR
AH3782-P-A	DIODES	获取价格	Hall Effect Sensor, -6mT Min, 6mT Max, 30-55mA, Rectangular, Through Hole Mount, GREEN, SI
AH3782-P-B	DIODES	获取价格	Hall Effect Sensor, -6mT Min, 6mT Max, 30-55mA, Rectangular, Through Hole Mount, GREEN, SI
AH3782-SA-7	DIODES	获取价格	Hall Effect Sensor, -6mT Min, 6mT Max, 30-55mA, Rectangular, Surface Mount, GREEN, SOT-23,
AH3782-SA-A	DIODES	获取价格	HIGH-VOLTAGE, HIGH-SENSITIVITY HALL EFFECT LATCH WITH INTERNAL PULL-UP RESISTOR
AH3782-SA-B	DIODES	获取价格	HIGH-VOLTAGE, HIGH-SENSITIVITY HALL EFFECT LATCH WITH INTERNAL PULL-UP RESISTOR
AH3782-W-7	DIODES	获取价格	Hall Effect Sensor, -6mT Min, 6mT Max, 30-55mA, Rectangular, Surface Mount, GREEN, SC-59,

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