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AH285

Features: On chip Hall sensor Rotor-locked shutdown Automatically restart Frequency generator (FG) output Buil t-in Zener protection for output driver Operating voltage: 3.8V~20V Output current: IO(AVE) = 500mA for SIP-5/SOT89-5 Output current: IO(AVE) = 400mA for SOT23-5 Package: SIP-5L, SOT23-5...

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SeekIC No. : 004278807 Detail

AH285: Features: On chip Hall sensor Rotor-locked shutdown Automatically restart Frequency generator (FG) output Buil t-in Zener protection for output driver Operating voltage: 3.8V~20V Output current: IO...

AH285 Data Sheet

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Part Number:
AH285
Supply Ability:
5000

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

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Upload time: 2024/11/24

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Product Details

Description



Features:

On chip Hall sensor
Rotor-locked shutdown
Automatically restart
Frequency generator (FG) output
Buil t-in Zener protection for output driver
Operating voltage: 3.8V~20V
Output current: IO(AVE) = 500mA for SIP-5/SOT89-5
Output current: IO(AVE) = 400mA for SOT23-5
Package: SIP-5L, SOT23-5L, SOT89-5L




Pinout

Connection Diagram




Specifications

Part Number AH285
Output Comp.
Description Hall Effect Smart Fan Motor Controller
Operating Voltage (V) 3.8 to 20
Typical Supply Current (Ave)
Output Current (Ave) 500mA
Operating Point Bop (Gauss) 5/60
Release Point Brp (Gauss) -60/-5
Operating Ambient Temp Range (°C) -40 to +100


Characteristics
Symbol
Rating
Unit
Supply voltage
Vdd
24
V
Output Current
I O(AVE)
SIP5/SOT89-5

500
mA
SOT23-5
400
I O(PEAK)
700
Power Dissipation
PD
SIP5
550
mW
SOT23-5
230
SOT89-5
800
Operating temperature range
Topr
-40 ~ 100
°C
Storage temperature range
Tstg
-55 ~ 150
°C
Maximum Junction Temp.
Tj
150
°C
Thermal Resistance
jc
SIP5
227
°C
SOT23-5
543
SOT89-5
156





Description

AH285 is a monolithic fan motor controller with Hall sensor's capability. It contains two complementary open-drain transistors as motor coil drivers,automatic lock current shutdown, and recovery protections. Additional, frequency generator (FG) output is for speed detection relatively.

To avoid coil burning, rotor-lock shutdown detection circuit shut down the output driver if the rotor is blocked and then the automatic recovery circuit will try to restart the motor. This function of AH285 repeats while the rotor is blocked.Until the blocking is removed,the motor recovers running normally.






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