AH287 integrated Hall sensor with output drivers brushless motor appli

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AH287 integrated Hall sensor with output drivers brushless motor appli

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PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH287
AH287 integrated Hall sensor with output drivers brushless motor application. This consists complementary outputs motor's coil driving automatic lock protection auto- restart function relatively. avoid coil burning, rotor lock shutdown protection circuit shut down output driver rotor blocked then automatic recovery circuit will restart motor. This function repeats while rotor blocked. Until blocking removed, motor recovers running normally. addition, auto-restart time flexible adjusting capacitance (CCT). Placing device variable magnetic field, magnetic flux density larger than threshold BOP, turned sink turned drive. This output state held until magnetic flux density reversal falls below BRP, causing turned drive turned sink. This available TO-94 package.
Features
On-chip Hall Sensor Operating Voltage: Maximum Output Current: 350mA (ave) Rotor-locked Protection Automatic Restart Adjustable Auto-restart Time Internal Band-gap Regulator Temperature Compensation Operating Temperature: -20°C 85°C Profile TO-94 Package Rating: 300V (Machine Model)
Application
Dual-coil Brushless
TO-94
Figure Package Type AH287
2008
Rev.
Semiconductor Manufacturing Limited
PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH287
Configuration
Package (TO-94)
Figure Configuration AH287 (Front View)
Description
Number
Name
Timing capacitance Output Output Ground
Function
2008
Rev.
Semiconductor Manufacturing Limited
PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH287
Functional Block Diagram
Regulator
Temperature Compensation
Hall Sensor
Amplifier
Schmitt Trigger
Output Driver
Lock Protection Auto Restart
Figure Functional Block Diagram AH287
Ordering Information
AH287
Circuit Type Package TO-94
Lead Free Green Magnetic Characteristics Gauss Gauss Gauss
Part Number Marking Lead Free
AH287Z4-E1 AH287Z4-E1 AH287Z4-E1
Package
Temperature Range
Lead Free
AH287Z4-AE1 AH287Z4-BE1 AH287Z4-CE1
Green
AH287Z4-AG1 AH287Z4-BG1 AH287Z4-CG1
Green
AH287Z4-G1 AH287Z4-G1 AH287Z4-G1
Packing Type
Bulk Bulk Bulk
TO-94
85°C
Semiconductor's Pb-free products, designated with "E1" suffix part number, RoHS compliant. Products with "G1" suffix available green package.
2008 Rev. Semiconductor Manufacturing Limited
PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH287
Absolute Maximum Ratings (Note TA=25°C)
Parameter
Supply Voltage Magnetic Flux Density Continuous Output Current Hold Peak (Start Power Dissipation Thermal Resistance Atmosphere Package Case TSTG IOUT
Symbol
Value
Unlimited 3000
Unit
Gauss °C/W °C/W
Storage Temperature (Machine Model) (Human Body Model)
Note Stresses greater than those listed under "Absolute Maximum Ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated under "Recommended Operating Conditions" implied. Exposure "Absolute Maximum Ratings" extended periods affect device reliability.
Recommended Operating Conditions
Parameter
Supply Voltage Ambient Temperature
Symbol
Unit
2008
Rev.
Semiconductor Manufacturing Limited
PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH287
Electrical Characteristics
=14V, =25°C, unless otherwise specified.
Parameter
Symbol
Conditions
B>150 Gauss, VCC=5V, VDOB=VCC, IDO=100mA B-150 Gauss, =5V, VDO= VCC, IDOB=100mA) B>150 Gauss, VDOB= VCC, IDO=350mA B-150 Gauss, VDO= VCC, IDOB=350mA) B>150 Gauss, VDOB=VCC B-150 Gauss, VDO=VCC) RL=820, CL=20pF RL=820, CL=20pF RL=820, CL=20pF
1.25
Unit
Output Saturation Voltage
VSAT
1.45
Supply Current Output Rise Time Output Fall Time Switch Time Differential Output Zener Breakdown Voltage Charge Current Discharge Current Clamp Voltage Comparator Voltage
ICHG IDHG
VCT=1 2.5V VCT=3.5 2.5V Limiting voltage Limiting voltage
2008
Rev.
Semiconductor Manufacturing Limited
PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH287
Magnetic Characteristics (TA=25°C)
Parameter
Operating Point
Symbol
Grade
Unit
Gauss
-100
Gauss
Releasing Point
Hysteresis
BHYS
Gauss
Test Circuit
Power Input
AH287
(Front View)
Marking Side
20pF 20pF
2008
Rev.
Semiconductor Manufacturing Limited
PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH287
Magnetic Hysteresis Characteristics
Output
Output
-100
-100
Magnetism (Gauss)
Magnetism (Gauss)
Figure Output Magnetism
Figure Output Magnetism
Typical Performance Characteristics
Supply Current (mA)
Supply Current (mA)
TA=25
VCC=14V
Supply Voltage
Ambient Temperature
Figure Supply Current Supply Voltage
Figure Supply Current Ambient Temperature
2008
Rev.
Semiconductor Manufacturing Limited
PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH287
Typical Performance Characteristics (Continued)
BOP/BRP/BHYS (Gauss)
BOP/BRP/BHYS(Gauss)
-100 -150 -200
BHYS
BHYS
Supply Voltage
Ambient Temperature
Figure BOP/BRP/BHYS Supply Voltage
Figure BOP/BRP/BHYS Ambient Temperature
Power Dissipation (mW)
Saturation Voltage
VCC=14V IOUT=350mA
Ambient Temperature
Ambient Temperature
Figure Saturation Voltage Ambient Temperature
Figure Power Dissipation Ambient Temperature
Table Table
(mW) (mW)
2008
Rev.
Semiconductor Manufacturing Limited
PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH287
Typical Application (Note
Note minimum startup voltage 3.5V when disconnected. capacitances adjustable base system requirements. recommended values below:
1µF/9V~2.2µF/9V
1µF/50V~2.2µF/50V
Figure Typical Application AH287
2008
Rev.
Semiconductor Manufacturing Limited
PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH287
Operating Diagram (Note
Hall Input
Motor Output
Clamp Voltage
Comparator Voltage Motor locked Motor lock detected TOFF
Motor lock cleared
Reverts normal operation
Note automatic restart circuit detects motor lock condition automatically turns output current. When lock cleared, automatically restarts allows motor run. AH287, automatic restart performed following manner. motor lock condition detected when Hall signal stops switching. output when being charged, when being discharged.
(Sec ICHG
(Sec IDHG
TOFF
Output time (TON) time (TOFF) determined capacitance external capacitor. clamp voltage comparator voltage ICHG charge current IDHG discharge current
Figure Control Timing Diagram AH287
2008
Rev.
Semiconductor Manufacturing Limited
PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH287
Mechanical Dimensions TO-94 Unit: mm(inch)
2008
Rev.
Semiconductor Manufacturing Limited
Semiconductor Manufacturing Limited
http://www.bcdsemi.com
IMPORTANT NOTICE Semiconductor Manufacturing Limited reserves right make changes without further notice products specifications herein. Semiconductor Manufacturing Limited does assume responsibility products particular purpose, does Semiconductor Manufacturing Limited assume liability arising application products circuits. Semiconductor Manufacturing Limited does convey license under patent rights other rights rights others.
MAIN SITE Headquarters Semiconductor Manufacturing Limited
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REGIONAL SALES OFFICE Shenzhen Office REGIONAL SALES OFFICE
Wafer Semiconductor Manufacturing Limited Shanghai Design Group SIM-BCD Semiconductor Manufacturing Co., Ltd. Shan Road, Shanghai 200233, China Corporation Advanced Analog Circuits (Shanghai) Tel: +86-21-6485 900, Shan Road, Shanghai 200233, China Zone 1491, Fax: +86-21-5450 0008 Tel: +86-21-6495 9539, Fax: +86-21-6485 9673 Office Semiconductor Corp. Office 30920 Huntwood Ave. Hayward, Semiconductor Corporation 94544, 30920 Huntwood Ave. Hayward, 94544, U.S.A +1-510-324-2988 Fax: +1-510-324-2788 +1-510-324-2988 Fax: +1-510-324-2788
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AH287 integrated Hall sensor with output drivers brushless motor appli

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