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2010.01 - Rev.B

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Hall IC Series

Bipolar

Latch Hall IC

BU52040HFV

●

Description

BU52040 Hall Effect IC for wheel keys / trackballs is designed to detect a switch in magnetic field from N to S (or vice versa)

and maintain its detection result on the output until the next switch. Output is pulled low for S-pole fields and high for N-pole

fields. This IC is ideal for detecting the number of shaft rotations inside of a wheel key, trackball, or other similar applications.

Using two ICs can also enable detection of rotation direction.

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Features

1) Ideally suited for wheel keys or trackballs

2) Micropower operation (small current consumption via intermittent operation method)

3) Ultra-small outline package

4) Supports 1.8 V supply voltage

5) High ESD resistance: 8kV (HBM)

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Applications

Wheel keys (zero-contact selection dials), trackballs, and other interface applications.

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Product Lineup

Product name

Supply voltage

(V)

Operation point

(mT)

Hysteresis

(mT)

Period

(µs)

Supply current

(AVG)

(µA)

Output type

Package

BU52040HFV

1.65～3.30

6.0

500

200

CMOS

HVSOF5

※

Plus is expressed on the S-pole; minus on the N-pole

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Absolute Maximum Ratings

BU52040HFV (Ta = 25°C)

Parameters

Symbol

Limit

Unit

Power Supply Voltage

1

V

Output Current

± 0.5

mA

Power dissipation

Pd

2

mW

Operating Temperature Range

-40～+85

°C

Storage Temperature Range

-40～+125

°C

※

1. Not to exceed Pd

※

2. Reduced by 5.36mW for each increase in Ta of 1℃ over 25℃(mounted on 70mm×70 mm×1.6mm Glass-epoxy PCB)

No.10045EBT05