Phase Hall Effect Latch With Output Features On-chip Hall plate O
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ATS278
Phase Hall Effect Latch With Output Features
On-chip Hall plate Operating voltage: 3.5V~20V Internal bandgap regulator allows temperature compensated operations wide operating voltage range High output sinking capability 400mA driving large load Built-in protection diode only chip reverse power connecting Frequency Generation (FG) output Package: SIP-5L
ATS278 integrated Hall sensor with output drivers rotor speed output, typically designed electronic commutation two-phase brush-less applications. On-chip Hall sensor will generate Hall voltage magnetics sensing. amplifier will amplify Hall voltage. Schmitt trigger determines switching hysteresis then control internal driver's on/off sink load current. Meanwhile, internal bandgap regulator used provide stable bais temperature-compensation. will provide switching frequency driver. Major feature minimize external components building-in output transistor. magnetic flux density larger than threshold Bop, turned (low) turned (high). output state held until magnetic flux density reversal falls below causing turned turned
Applications
Dual-coil Brush-less Motor Dual-coil Brush-less Revolution Counting Speed Measurement
Ordering Information
ATS278
Wafer Body Blank necessary specify
Package SIP-5L
Lead Lead Free Blank: Normal
Packing Blank Tube Bulk Tape Reel
Magnetic Characteristics
Typical Application Circuit
5V/12V
Coil1
Coil2
Speed
5V/12V Brush-less with output function
This datasheet contains product information. Anachip Corp. reserves rights modify product specification without notice. liability assumed result this product. rights under patent accompany sale product.
Rev.
2004
ATS278
Phase Hall Effect Latch With Output Block Diagram
REG. Comparators Hall Plane
Configuration
Front View
Name
P/I/O
Description Frequency detection output Positive power input Driver Output Driver Output Inverting Ground
Anachip Corp. www.anachip.com.tw
Rev. 2004
ATS278
Phase Hall Effect Latch With Output
Absolute Maximum Ratings
Characteristics Supply voltage Reverse Polarity Voltage Magnetic flux density Continuous Output "on" current Hold Peak (Start Sink current Operating temperature range Storage temperature range Package Power Dissipation Symbol VRCC Values Unlimited -20~+85 -65~+150 Unit
Electrical Characteristics Ta=+25°C
Characteristic Supply Voltage Output Saturation Voltage Output Zener Breakdown Output Leakage Current Supply Current Output Rise Time Output Falling Time Switch Time Differential saturation voltage Symbol Vce(sat) Icex Conditions Vcc=14V, IL=300mA Vce=14V, Vcc=14V Vcc=20V, Output Open Vcc=14V, RL=820, CL=20pF (Test Circuit) Vcc=14V, RL=820, CL=20pF (Test Circuit) Vcc=14V, RL=820, CL=20pF (Test Circuit) Vcc=14V, IL=20 -Typ -300 <0.1 Unit
Test circuit
Anachip Corp. www.anachip.com.tw
Rev. 2004
ATS278
Phase Hall Effect Latch With Output Magnetic Characteristics( Ta=+25oC)
(1mT=10 Gauss) grade Characteristic Operate Point Release Point Hysteresis grade Characteristic Operate Point Release Point Hysteresis Symbol BHYS Min. Typ. Max. Unit Gauss Gauss Gauss Symbol BHYS Min. Typ. Max. Unit Gauss Gauss Gauss
Output Voltage Volts
Output Voltage Volts
Vsat
Vsat -200 -100
-200
-100
Magnetic Flux Density Gauss
Magnetic Flux Density Gauss
Anachip Corp. www.anachip.com.tw
Rev. 2004
ATS278
Phase Hall Effect Latch With Output Timing Diagram
Rotor state Rotatory Locked Rotatory Locked
Marking Information
Front View Part Number
Blank: normal Lead Free Package Code week: 01~52 Year: 2001 2002
Anachip Corp. www.anachip.com.tw
Rev. 2004
ATS278
Phase Hall Effect Latch With Output Package Information
Package type: SIP-5L unit: [inch]
5.22 [0.206 0.003]
2-0.3C [0.079-0.012C]
1.55 [0.061 0.003]
[0.165 REF]
0.73 [0.029 0.003]
3.65 [0.144 0.003] 0.48 [0.019 0.003]
14.3 [0.563 0.012]
0.38 0.03 [0.015 0.001]
0.95 0.03 [0.037 0.001]
0.38 0.03 [0.015 0.001]
Location Sensing Point
2.006 [0.079 inch]
View)
1.016 [0.04 inch]
Anachip Corp. www.anachip.com.tw
Rev. 2004
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