Complementary Output Hall Effect Latch Features On-chip Hall sens

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Complementary Output Hall Effect Latch Features On-chip Hall sens

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AH276
Complementary Output Hall Effect Latch Features
On-chip Hall sensor with different sensitivity hysteresis settings AH276 3.5V operating voltage 400mA (avg) output sink current Built-in protecting diode only chip reverse power connecting -20°C 85°C operating temperature profile package
AH276 integrated Hall sensors with output drivers, mainly designed electronic commutation brush-less Fan. This internally includes regulator, protecting diode, Hall plate, amplifier, comparator, pair complementary open-collector outputs (DO, DOB). While magnetic flux density larger than operate point (Bop), will turn (low), meanwhile will turn (high). Each output latched until lower than release point (Brp), then DODOB transfer each state. application, sometimes need test power reverse connection condition. Internal diode only protects chip-side coil-side. necessary, external diode block reverse current from coil-side.
Applications
Dual-coil Brush-less Motor Dual-coil Brush-less Revolution Counting Speed Measurement
Ordering Information
AH276
Wafer Body Blank necessary specify
Package SIP-4L
Lead Lead Free Blank: Normal
Packing Blank Tube Bulk Tape Reel
Typical Application Circuit
coil1
coil2
Brush-less
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.0.0 2004
AH276
Complementary Output Hall Effect Latch Block Diagram
REG.
Hall Plate
Assignment
Front View
:GND
Name
P/I/O
Description Power Supply Input Output Output Ground
Anachip Corp. www.anachip.com.tw
Rev.0.0 2004
AH276
Complementary Output Hall Effect Latch Absolute Maximum Ratings Ta=25°C
Characteristics Supply voltage Reverse Polarity Voltage Magnetic flux density Continuous Output "on" current Hold Peak (Start Operating temperature range Storage temperature range Package Power Dissipation Maximum Junction Temp Symbol VRCC Values Unlimited -20~+85 -65~+150 Unit
Electrical Characteristics (T=+25°C)
Characteristic Supply Voltage Supply Voltage Output Zener Breakdown Output Saturation Voltage Output Leakage Current Supply Current Output Rise Time Output Falling Time Switch Time Differential Symbol Vce(sat) Icex Conditions Vcc=3.5V, IL=100mA <0.1 Units
Vcc=14V, IL=400mA Vce=14V, Vcc=14V Vcc=20V, Output Open Vcc=14V, RL=820, CL=20pF Vcc=14V, RL=820, CL=20pF Vcc=14V, RL=820, CL=20pF
Test Circuit
RL1=RL2=820 CL1=CL2=20
Anachip Corp. www.anachip.com.tw
Rev.0.0 2004
AH276
Complementary Output Hall Effect Latch Magnetic Characteristics (Ta=+25°C)
(1mT Gauss) Characteristic Operate Point Release Point Hysteresis Symbol Min. -110 Typ. Max. Unit Gauss Gauss Gauss
Output Voltage Output Voltage
off-state
off-state
Turn
Turn
Turn
Turn
on-state
on-state
Vsat
Vsat Magnetic flux density
Magnetic flux density
Performance Characteristics (SIP-4)
(°C) (mW) (°C) (mW)
Anachip Corp. www.anachip.com.tw
Rev.0.0 2004
AH276
Complementary Output Hall Effect Latch Operating Characteristics
Output Voltage
Marking side
High
SIP4
Vsat
Magnetic flux density
Marking Information
View Part Number
Blank normal Lead Free Package Code: week: 01~52 Year: 2001 2002
Anachip Corp. www.anachip.com.tw
Rev.0.0 2004
AH276
Complementary Output Hall Effect Latch Package Information
Active Area Depth
Marking side 1.75mm 1.35mm
Package Sensor Location
0.7mm
Package Dimension
1.55mm +/-0.1mm 1.03mm +/-0.1 0.30mm +/-0.1mm
14.25mm +/-1.25mm 0.38mm +/-0.03mm
3.65mm +/-0.1mm
0.46mm +/-0.03mm
0.41mm +/-0.03mm 3.81mm +/-0.03mm
5.22mm +/-0.1mm 4.20mm +/-0.1mm
0.2mm Max. 1.42mm+/-0.1mm
1.27mm +/-0.03mm
Anachip Corp. www.anachip.com.tw
Rev.0.0 2004

Complementary Output Hall Effect Latch Features On-chip Hall sens

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