BU52040HFV_10 Datasheet, PDF (1/13 Pages) Rohm – Bipolar Latch Hall IC

Hall IC Series
Bipolar
Latch Hall IC
BU52040HFV
No.10045EBT05
●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.
●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)
●Applications
Wheel keys (zero-contact selection dials), trackballs, and other interface applications.
●Product Lineup
Product name
Supply voltage
(V)
Operation point Hysteresis
(mT)
(mT)
BU52040HFV 1.65～3.30
+/-3.0^※
6.0
※Plus is expressed on the S-pole; minus on the N-pole
Period
(µs)
500
Supply current
(AVG)
(µA)
200
Output type
CMOS
●Absolute Maximum Ratings
BU52040HFV (Ta = 25°C)
Parameters
Symbol
Limit
Power Supply Voltage
V_DD
-0.1～4.5^※1
Output Current
Power dissipation
I_OUT
± 0.5
Pd
536^※2
Operating Temperature Range
T_opr
-40～+85
Storage Temperature Range
T_stg
-40～+125
※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)
Package
HVSOF5
Unit
V
mA
mW
°C
°C
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2010.01 - Rev.B