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AH276Q

Features: • On-chip Hall sensor with two different sensitivity and hysteresis settings for AH276• Built-in protecting diode only for chip reverse power connecting• -20°C to 85°C operating temperature• Lead Free Finish/RoHS Compliant for Lead Free products (Note 1)• Le...

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SeekIC No. : 004278800 Detail

AH276Q: Features: • On-chip Hall sensor with two different sensitivity and hysteresis settings for AH276• Built-in protecting diode only for chip reverse power connecting• -20°C to 85°C op...

AH276Q Data Sheet

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Part Number:
AH276Q
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• On-chip Hall sensor with two different sensitivity and hysteresis settings for AH276
• Built-in protecting diode only for chip reverse power connecting
• -20°C to 85°C operating temperature
• Lead Free Finish/RoHS Compliant for Lead Free products (Note 1)
• Lead Free Package: SIP-4L




Application

• Dual-coil Brush-less DC Motor
• Dual-coil Brush-less DC Fan
• Revolution Counting
• Speed Measurement




Pinout

Connection Diagram




Specifications

PARAMETER SYMBOL RATINGS UNIT
Supply voltage VCC 20 V
Reverse VCC Polarity Voltage VRCC -20 V
Magnetic flux density B Unlimited
Output "on" current* Continuous IO 0.4 A
Hold 0.5
Peak (Start Up) 0.7
Operating temperature range TA -20~+85
Storage temperature range TS -65~+150
Package Power Dissipation (SIP-4) PD 550 mW
Maximum Junction Temp TJ 150
Thermal Resistance (SIP-4) JC 227 /W
*Note: 4. Pd shall be within Safety Operation Area.

Part Number AH276Q
Description Comp Output Hall Effect Latch
process Bipolar
Operating Voltage (V) 3.5 ~ 20
Output Current (Ave) 400mA
Operating Point Bop (Gauss) 10/50
5/70
100 max
Release Point Brp (Gauss) -50/-10
-70/-5
-100 min
Operating Ambient Temp Range (°C) -20 to +85





Description

AH276 are integrated Hall sensors with output drivers, mainly designed for electronic commutation of brush-less DC Fan. This AH276 IC internally includes the regulator, protecting diode, Hall plate, amplifier, comparator, and a pair of complementary open-collector outputs (DO, DOB). While the magnetic flux density (B) is larger than operate point (Bop), DO will turn on (low), and meanwhile DOB will turn off (high). Each output is latched until B is lower than release point (Brp), and then DO,DOB transfer each state.

For DC fan application, sometimes AH276 need to test power reverse connection condition. Internal diode only protects chip-side but not for coil-side. If necessary, add one external diode to block the reverse current from coil-side.






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