Datasheet > MLX90248

MLX90248

更新时间： 2024-11-11 04:15:11

品牌	Logo	应用领域
迈来芯 - MELEXIS		开关
页数	文件大小	规格书
11页	420K
描述
Micropower & Omnipolar Hall Switch

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MLX90248 数据手册

MLX90248

Micropower & Omnipolar Hall Switch

Features and Benefits

Application Examples

ꢀ Micropower consumption ideal for battery-

powered applications

ꢀ Omnipolar, easy to use as output switches

with both North and South pole

ꢀ Ultra-Thin QFN package (0.43mm max) &

Thin SOT23 3L (both RoHS Compliant)

ꢀ Very High Sensitivity Hall Sensor

ꢀ Chopper stabilized amplifier stage

ꢀ Operation down to 2.5V

ꢀ Solid State Switch

ꢀ Handheld Wireless Handset Awake Switch

ꢀ Lid close sensor for battery-powered devices

ꢀ Magnet proximity sensor for reed switch

replacement in low duty cycle applications

Ordering Information

Part No.

MLX90248

Temperature Code

E (-40°C to 85°C)

Package Code

SE (TSOT-3L)

LD (UTQFN-6L)

1 Functional Diagram

2 General Description

The MLX90248 Omnipolar^TMHall effect sensor IC

is fabricated from mixed signal CMOS technology.

It incorporates advanced chopper-stabilization

techniques to provide accurate and stable

magnetic switch points.

The circuit design provides an internally controlled

clocking mechanism to cycle power to the Hall

element and analog signal processing circuits.

This serves to place the high current-consuming

portions of the circuit into a “Sleep” mode.

Periodically the device is “Awakened” by this

internal logic and the magnetic flux from the Hall

element is evaluated against the predefined

thresholds. If the flux density is above or below the

Bop/Brp thresholds then the output transistor is

driven to change states accordingly. While in the

“Sleep” cycle the output transistor is latched in its

previous state. The design has been optimized for

service in applications requiring extended

operating lifetime in battery powered systems.

The output transistor of the 90248 will be latched

on (BOP) in the presence of a sufficiently strong

South or North magnetic field facing the marked

side of the package. The output will be latched off

(BRP) in the absence of a magnetic field.

3901090248

Rev 012

Page 1 of 11

Data Sheet

Sept/06

12 3 4 5 6 7...11

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