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2010.01 - Rev.B
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Hall IC Series
Bipolar
Latch Hall IC
BU52040HFV
?SPAN class="pst BU52040HFV-TR_2601631_6">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.
?SPAN class="pst BU52040HFV-TR_2601631_6">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)
?SPAN class="pst BU52040HFV-TR_2601631_6">Applications
Wheel keys (zero-contact selection dials), trackballs, and other interface applications.
?SPAN class="pst BU52040HFV-TR_2601631_6">Product Lineup
Product name
Supply voltage
(V)
Operation point
(mT)
Hysteresis
(mT)
Period
(祍)
Supply current
(AVG)
(礎)
Output type
Package
BU52040HFV
1.65^3.30
+/-3.0
;
6.0
500
200
CMOS
HVSOF5
;Plus is expressed on the S-pole; minus on the N-pole
?SPAN class="pst BU52040HFV-TR_2601631_6">Absolute Maximum Ratings
BU52040HFV (Ta = 25癈)
Parameters
Symbol
Limit
Unit
Power Supply Voltage
V
DD
-0.1^4.5
;
1
V
Output Current
I
OUT
?0.5
mA
Power dissipation
Pd
536
;
2
mW
Operating Temperature Range
T
opr
-40^+85
癈
Storage Temperature Range
T
stg
-40^+125
癈
;1. Not to exceed Pd
;2. Reduced by 5.36mW for each increase in Ta of 1 over 25(mounted on 70mm?0 mm?.6mm Glass-epoxy PCB)
No.10045EBT05
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