Diodes ATS177 Manuel d'utilisateur

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ATS177
SINGLE OUTPUT HALL EFFECT LATCH
ATS177
Document number: DS31055 Rev. 6 - 2
1 of 9
www.diodes.com
July 2010
© Diodes Incorporated
Description
ATS177 is an integrated Hall-Effect latch 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-collector output. An internal
bandgap regulator provides a temperature compensated
supply voltage for internal circuits and allows a wide operating
supply range.
When the magnetic flux density (B) is larger than operate
point (Bop), output is switched on (DO pin is pulled low). The
output state is held on until a magnetic flux density reversal
falls below Brp. When B is less than Brp, the output is
switched off.
The ATS177 is available in SIP-3L package.
Features
Bipolar Hall-Effect latch sensor
3.5V to 20V DC operating voltage
• Temperature compensation
• Open-collector pre-driver
25mA maximum output sink current
Built-in reverse polarity protection
Operating temperature: -40°C to +125°C
• SIP-3L package
Green Molding Compound (No Br, Sb) (Note 1)
Pin Assignments
(Top View)
1.
Vcc
2.
GND
3.
DO
SIP-3L
Applications
• Brush-less DC Motor
• Brush-less DC Fan
• Revolution counting
• Speed measurement
Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
Typical Application Circuit
+12V
U1
ATS177
VCC
1
GND
2
OUTPUT
3
Q1
NPN
Q2
NPN
R1
2K
R2
3K
D1
+
C1
0.47uF
+
C2
0.47uF
L1
L2
Brush-less DC Fan
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Résumé du contenu

Page 1 - (Top View)

ATS177SINGLE OUTPUT HALL EFFECT LATCH ATS177 Document number: DS31055 Rev. 6 - 2 1 of 9 www.diodes.com July 2010 © Diodes Incorporated Description

Page 2 - © Diodes Incorporated

ATS177SINGLE OUTPUT HALL EFFECT LATCH ATS177 Document number: DS31055 Rev. 6 - 2 2 of 9 www.diodes.com July 2010 © Diodes Incorporated Pin Descrip

Page 3 - Test Circuit

ATS177SINGLE OUTPUT HALL EFFECT LATCH ATS177 Document number: DS31055 Rev. 6 - 2 3 of 9 www.diodes.com July 2010 © Diodes Incorporated Electrical

Page 4 - Output Voltage in Volts

ATS177SINGLE OUTPUT HALL EFFECT LATCH ATS177 Document number: DS31055 Rev. 6 - 2 4 of 9 www.diodes.com July 2010 © Diodes Incorporated Magnetic Ch

Page 5 - Power Dissipation Curve

ATS177SINGLE OUTPUT HALL EFFECT LATCH ATS177 Document number: DS31055 Rev. 6 - 2 5 of 9 www.diodes.com July 2010 © Diodes Incorporated Performance

Page 6

ATS177SINGLE OUTPUT HALL EFFECT LATCH ATS177 Document number: DS31055 Rev. 6 - 2 6 of 9 www.diodes.com July 2010 © Diodes Incorporated Ordering In

Page 7 - July 2010

ATS177SINGLE OUTPUT HALL EFFECT LATCH ATS177 Document number: DS31055 Rev. 6 - 2 7 of 9 www.diodes.com July 2010 © Diodes Incorporated Package Out

Page 8 - (Continued)

ATS177SINGLE OUTPUT HALL EFFECT LATCH ATS177 Document number: DS31055 Rev. 6 - 2 8 of 9 www.diodes.com July 2010 © Diodes Incorporated Package Out

Page 9

ATS177SINGLE OUTPUT HALL EFFECT LATCH ATS177 Document number: DS31055 Rev. 6 - 2 9 of 9 www.diodes.com July 2010 © Diodes Incorporated IMPORTAN

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