下载
AH3761
Document number: DS31977 Rev. 2 - 3
1 of 9
www.diodes.com
June 2017
© Diodes Incorporated
AH3761
HIGH SENSITIVITY HALL EFFECT LATCH
Description
The AH3761 is an integrated Hall effect latched sensor designed for
electronic commutation of brush-less DC motor applications. The
device includes an on-chip Hall voltage generator for magnetic
sensing, a comparator that amplifies the Hall voltage, and a schmitt
trigger to provide switching hysteresis for noise rejection, and open
drain output. An internal bandgap regulator is used to provide
temperature compensated supply voltage for internal circuits and
allows a wide operating supply range.
If a magnetic flux density larger than threshold Bop, DO is turned on
(low). The output state is held until a magnetic flux density reversal
falls below Brp causing DO to be turned off (high).
Features
3V to 28V DC Operation Voltage
Chopper Stabilized
Wide Operating Voltage Range
Built-in Power Reverse Protection
Built-in Voltage Overshoot Protection
Output Short Circuit Protection
Open Drain Pre-Driver
SIP-3 (Ammo Pack), SIP-3 (Bulk Pack) and SC59 (Commonly
known as SOT23 in Asia)
Available in “Green” Molding Compound (No Br, Sb)
Totally Lead-Free & Fully RoHS Compliant (Note 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Pin Assignments
1.
Vdd
2.
GND
3.
( Top View )
OUT
SIP-3 (Bulk Pack)
1 . Vdd
3.
GND 2.
OUT
( Top View )
SC59
Applications
Brush-less DC Motor Commutation
RPM Detection
Consumer and Industrial Position Sensor
Flow Meters
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Typical Applications Circuit
AH3761
1
2
3
Vdd
OUT
GND
R
NOT RECOMMENDED FOR NEW DESIGN
USE AH3774
页面指南
