A3251LUA-TS

更新时间： 2024-11-12 13:05:15

品牌	Logo	应用领域
急速微 - ALLEGRO		开关
页数	文件大小	规格书
15页	417K
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A3251LUA-TS 数据手册

A3250 and A3251

Field-Programmable, Chopper-Stabilized

Unipolar Hall-Effect Switches

The A3250 and A3251 are field-programmable, chopper-stabilized, unipolar Hall-

effect switches designed for use in high-temperature applications. These devices

use a chopper-stabilization technique to eliminate offset inherent in single-element

devices.

Package UA, 3-pin SIP

The A3250 and A3251 are externally programmable devices. The devices have a

wide range of programmability of the magnetic operate point (B_OP) while the hys-

teresis remains fixed. This advanced feature allows for optimization of the sensor

switchpoint and can drastically reduce the effects of variations found in a produc-

tion environment, such as magnet and device placement tolerances.

These devices provide on-chip transient protection. A Zener clamp on the power

supply protects against overvoltage conditions on the supply line. These devices

also include short-circuit protection on the output.

The output of the A3250 switches LOW when subjected to a south-polarity mag-

netic field with a flux density that exceeds the threshold for B_OP, and switches

HIGH when the field drops below the magnetic release point, B_RP. The output of

the A3251 has the opposite polarity, switching HIGH in a south-polarity magnetic

TL Option

field that B_OP, and switching LOW when the field drops below B_RP

The other differences in the devices are the power-on state. The A3250 powers-on

in the HIGH state, while the A3251 powers-on in the LOW state.

1. VCC

2. GND

These devices are available in a TO-92 three-lead ultra-mini SIP (Single In-line

Package), with either straight or formed and trimmed lead configuration.

3. VOUT

Features and Benefits

ꢀChopper stabilization for stable switchpoints ꢀOn-chip protection against:

throughout operating temperature range

ABSOLUTE MAXIMUM RATINGS

ꢀSupply transients

ꢀExternally programmable operate point

(through VCC pin)

ꢀOutput short-circuits

Supply Voltage, V_CC......................................26.5 V

Reverse-Supply Voltage, V_RCC........................–18 V

Zener Overvoltage, V_Z.......................................30 V

Output Current, I_OUT.........................................20 mA

Magnetic Flux Density, B .........................Unlimited

Operating Temperature

ꢀReverse-battery condition

ꢀOn-board voltage regulator for 4.2 V to 24 V

operation

Use the following complete part numbers when ordering:

V_OUT

Ambient, T_A, Range J................. –40ºC to 115ºC

Ambient, T_A, Range L................–40ºC to 150ºC

Maximum Junction, T_J(max)........................165ºC

Storage Temperature, T_S..................–65ºC to 170ºC

B_hys(typ)

(G)

T_A

(ºC)

Part Number

Package

Power-On Running*

A3250JUA

Straight lead

–40 to 115

–40 to 150

–40 to 115

–40 to 150

A3250JUATL Formed lead

A3250LUA Straight lead

A3250LUATL Formed lead

A3251JUA Straight lead

A3251JUATL Formed lead

A3251LUA Straight lead

A3251LUATL Formed lead

High

Low

High

*In south polarity magnetic field of sufficient strength.

Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

www.allegromicro.com

A3250-DS

12 3 4 5 6 7...15

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与A3251LUA-TS相关器件

型号	品牌	获取价格	描述	数据表
A325ERW	MPD	获取价格	Low Cost, Wide Input, 3W Single & Dual Output DC/DC Converters
A325R	MPD	获取价格	Compact, Regulated, 3W Single & Dual Output DC/DC Converters
A325RI	MPD	获取价格	High Isolation, 2W & 3W Single & Dual Output DC/DC Converters
A325RW	MPD	获取价格	Wide Input Range, 3W Single & Dual Output DC/DC Converters
A3260**	ETC	获取价格	2-WIRE. CHOPPER-STABILIZED. PRECISION HALL-EFFECT BIPOLAR SWITCH
A3260_06	ALLEGRO	获取价格	2-Wire Chopper Stabilized Precision Hall Effect Bipolar Switch
A3260ELH	ETC	获取价格	Hall-Effect Switch
A3260ELH.	ETC	获取价格	2-WIRE， CHOPPER-STABILIZED，PRECISION HALL-EFF
A3260ELHLT	ALLEGRO	获取价格	2-Wire Chopper Stabilized Precision Hall Effect Bipolar Switch
A3260ELT	ALLEGRO	获取价格	Analog Circuit, 1 Func, BIPolar, PSSO3, TO-243AA, SOT-89, 3 PIN

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