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...
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...
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US $.48 - .77 / Piece
Board Mount Hall Effect / Magnetic Sensors HALL IC LATCH SW BI 3.5-20V 500mA
US $.45 - .73 / Piece
Board Mount Hall Effect / Magnetic Sensors HALL IC LATCH SW BI 3.5-20V 500mA
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 |
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 |
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.