A3250ELT-T

更新时间： 2024-01-27 07:39:15

品牌	Logo	应用领域
急速微 - ALLEGRO		模拟IC 开关信号电路
页数	文件大小	规格书
15页	354K
描述
Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect Switches

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技术参数
数据手册

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A3250ELT-T 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	MODULE	包装说明：	,
针数：	3	Reach Compliance Code：	compliant
风险等级：	5.83	模拟集成电路 - 其他类型：	ANALOG CIRCUIT
JESD-30 代码：	R-PSSO-G3	JESD-609代码：	e0
长度：	4.105 mm	功能数量：	1
端子数量：	3	最高工作温度：	150 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	245	认证状态：	Not Qualified
座面最大高度：	1.57 mm	最大供电电压 (Vsup)：	24 V
最小供电电压 (Vsup)：	4.2 V	标称供电电压 (Vsup)：	12 V
表面贴装：	YES	温度等级：	AUTOMOTIVE
端子面层：	TIN LEAD	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	SINGLE
处于峰值回流温度下的最长时间：	30	宽度：	3.035 mm
Base Number Matches：	1

A3250ELT-T 数据手册

A3250 and A3251

Field-Programmable, Chopper-Stabilized

Unipolar Hall-Effect Switches

Features and Benefits

Description

▪ Chopper stabilization for stable switchpoints throughout

operating temperature range

The A3250 and A3251 are field-programmable, chopper-

stabilized, unipolar Hall-effect switches designed for use in

high-temperature applications. These devices use a chop-

per-stabilization technique to eliminate offset inherent in

single-element devices.

▪ Externally programmable operate point (through VCC

pin)

▪ On-board voltage regulator for 4.2 V to 24 V operation

▪ On-chip protection against:

The A3250 and A3251 are externally programmable

devices. The devices have a wide range of programmabil-

ity of the magnetic operate point (B_OP) while the hysteresis

remains fixed. This advanced feature allows for optimiza-

tion of the sensor switchpoint and can drastically reduce

the effects of variations found in a production environment,

such as magnet and device placement tolerances.

▫ Supply transients

▫ Output short-circuits

▫ Reverse-battery condition

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.

Package: 3 pin SOT89 (suffix LT) and

3 pin SIP (suffix UA)

The output of the A3250 switches LOW when subjected

to a south-polarity magnetic field with a flux density that

exceeds the threshold for B_OP, and switches HIGH when the

Continued on the next page…

Not to scale

Functional Block Diagram

VCC

Program/Lock

Programming

Logic

Regulator

Offset Adjust

VOUT

Amp

Current Limit

Low-Pass

Filter

GND

3250-DS Rev. 3

12 3 4 5 6 7...15

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