BU52040HFV
BU52040HFV is Bipolar Latch Hall manufactured by ROHM.
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: 8k V (HBM)
- Applications Wheel keys (zero-contact selection dials), trackballs, and other interface applications.
- Product Lineup
Product name
Supply voltage (V)
Operation point Hysteresis
(m T)
(m T)
BU52040HFV 1.65～3.30
+/-3.0※
※Plus is expressed on the S-pole; minus on the N-pole
Period (µs)
Supply current (AVG) (µA)
Output type CMOS
- Absolute Maximum Ratings BU52040HFV (Ta = 25°C)
Parameters
Symbol
Limit
Power Supply Voltage
VDD -0.1～4.5※1
Output Current Power dissipation
IOUT ± 0.5 Pd 536※2
Operating Temperature Range
Topr -40～+85
Storage Temperature Range
Tstg -40～+125
※1. Not to exceed Pd
※2. Reduced by 5.36m W for each increase in Ta of 1℃ over 25℃(mounted on 70mm×70 mm×1.6mm Glass-epoxy PCB)
Package
HVSOF5
Unit V m A m W °C °C
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