|
|
PDF AH3781 Data sheet ( Hoja de datos )
| Número de pieza | AH3781 | |
| Descripción | HIGH-VOLTAGE HIGH-SENSITIVITY HALL EFFECT LATCH | |
| Fabricantes | Diodes | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AH3781 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
|
No Preview Available !
Description
AH3781
HIGH-VOLTAGE HIGH-SENSITIVITY HALL EFFECT LATCH
WITH INTERNAL PULL-UP RESISTOR
Pin Assignments
The AH3781 is a high-voltage, high-sensitivity Hall Effect latch IC
with internal pull-up resistor designed for commutation of brushless
DC motors, flow meters, linear encoders and position sensors in
industrial, consumer home appliance and personal care applications.
To support a wide range of demanding applications, the design is
optimized to operate over the supply range of 3.0V to 28V. With
chopper stabilized architecture and an internal bandgap regulator to
provide temperature compensated supply for internal circuits, the
AH3781 provides a reliable solution over the whole operating range.
For robustness and protection, the device has a Zener clamp on the
supply. The output has an overcurrent limit and a Zener clamp.
(Top View)
GND 2
3 OUTPUT
1 VDD
SOT23
The internally pulled-up output can be switched on with South pole of
sufficient strength and switched off with North pole of sufficient
strength. When the magnetic flux density (B) perpendicular to the part
marking surface is larger than the operate point (BOP) the output is
switched on (pulled low). The output is held latched until magnetic flux
density reverses and becomes lower than the release point (BRP).
(Top View)
SIP-3
3. OUTPUT
2. GND
1. VDD
Features
• Bipolar Latch Operation (South Pole: On, North Pole: off)
• 3.0V to 28V Operating Voltage Range
• High Sensitivity: BOP and BRP of +25G and -25G Typical
• Internally Pull-up Resistor on the Output Pin
• Output Overcurrent Limit
• Chopper Stabilized Design Provides
- Superior Temperature Stability
- Minimal Switch Point Drift
- Enhanced Immunity to Stress
• Good RF Noise Immunity
• Zener Clamp on Supply and Output Pins
• -40°C to +125°C Operating Temperature
• ESD (HBM): 6kV
• Industry Standard SOT23 and SIP-3 Packages
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
Applications
• Brushless DC Motor Commutation
• Revolution Per Minute (RPM) Measurement
• Flow Meters
• Angular and Linear Encoder and Position Sensors
• Contactless Commutation, Speed Measurement and Angular
Position Sensing/Indexing in Consumer Home Appliances, Office
Equipments and Industrial Applications
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.
AH3781
Document number: DS37903 Rev. 1 - 2
1 of 13
www.diodes.com
September 2015
© Diodes Incorporated
1 page  
Typical Operating Characteristics
Magnetic Operating Switch Points – BOP and BRP
70
60
TA = +25oC
50
40
30
20
10
0
-10
-20
-30
-40
-50
-60
-70
2468
Hyst
Bop
Brp
10 12 14 16 18 20 22 24 26 28 30
Supply Voltage (V)
Switch Points Bop and Brp vs Supply Voltage
AH3781
70
60
VDD = 3V
50
40
30
20
10
0
-10
-20
-30
-40
-50
-60
-70
-80
-50 -25
0
Hyst
Bop
Brp
25 50 75 100 125 150
Temperature (oC)
Switch Points Bop and Brp vs Temperature
70
60
VDD = 12V
50
40
30
20
10
0
-10
-20
-30
-40
-50
-60
-70
-50 -25
0
Hyst
Bop
Brp
25 50 75 100 125 150
Temperature (oC)
Switch Points Bop and Brp vs Temperature
Supply Current
7.0
TA = +25 C
6.0
5.0
4.0
3.0
2.0
1.0
0.0
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
Supply Voltage (V)
Supply Current vs Supply Voltage
70
60
VDD = 28V
50
40
30
20
10
0
-10
-20
-30
-40
-50
-60
-70
-50 -25
0
Hyst
Bop
Brp
25 50 75 100 125 150
Temperature (oC)
Switch Points Bop and Brp vs Temperature
7.0
28V
6.0
5.0
4.0
3.0
12V
2.0
3V
1.0
0.0
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130
Temperature (oC)
Supply Current vs Temperature
AH3781
Document number: DS37903 Rev. 1 - 2
5 of 13
www.diodes.com
September 2015
© Diodes Incorporated
5 Page 
AH3781
Package Outline Dimensions (cont.) (All dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version.
(3) Package Type: SIP-3 Ammo Pack
EF
A
BP
DN
C
G a1
a2
SIP-3 (Ammo Pack)
Dim Min
Max
A 3.9
4.3
a1 45° Typ
a2 3° Typ
B 2.8 3.2
C 1.40 1.60
D 0.35 0.41
E 0.43 0.48
F 0 0.2
G 2.4 2.9
N 0.63 0.84
P 1.55
-
All Dimensions in mm
PART
MARKING
SURFACE
1.90/2.10
Min/Max
0.63/0.84
0.27/0.48
1.05/1.25
Hall Sensor
PART
MARKING
SURFACE
123
Sensor Location
AH3781
Document number: DS37903 Rev. 1 - 2
11 of 13
www.diodes.com
September 2015
© Diodes Incorporated
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet AH3781.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AH3781 | HIGH-VOLTAGE HIGH-SENSITIVITY HALL EFFECT LATCH | Diodes |
| AH3782 | HIGH-SENSITIVITY HALL EFFECT LATCH | Diodes |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |