Datasheet > A3250LLT

A3250LLT

更新时间： 2022-12-01 19:01:02

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
15页	354K
描述
Analog Circuit, 1 Func, PSSO3, TO-243AA, SOT-89, 3 PIN

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A3250LLT 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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A3250LLT-T	ALLEGRO	Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect Switches	获取价格
A3250LLTTR	ALLEGRO	Analog Circuit, 1 Func, PSSO3, TO-243AA, SOT-89, 3 PIN	获取价格
A3250LLTTR-T	ALLEGRO	Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect Switches	获取价格
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