Key facts
- Brand
- AnaChip
- Model
- AH280
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-07
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AnaChip AH280 Hall-Effect Smart Fan Driver Datasheet
The AH280 is a smart fan driver designed to drive two complementary outputs for motor coils. It includes built-in protection features such as a Zener diode for the output driver and a diode for power reverse connection. The device incorporates an on-chip Hall plate, a regulator with temperature-compensated band-gap, and a Schmitt trigger for noise rejection.
Key operational features include rotor-lock detection which shuts down the output if the motor stalls, and an automatic restart circuit that resumes operation once the lock is cleared. The auto-restart time is adjustable via an external capacitor (CT). The device supports operating voltages from 3.5V to 20V and offers packages including SIP-5L, SOP-8L, and SOP-8L EP.
AnaChip AH280 specifications
| Operating Voltage | 3.5~20 V |
|---|---|
| Max Output Current | 500 mA |
| Operating Temperature Range | -20~85 °C |
| Storage Temperature Range | -55~150 °C |
| Comparator Voltage (Vcp) | 1.0 V |
Source: AnaChip AH280 Hall-Effect Smart Fan Driver Datasheet
All AnaChip AH280 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the function of the CT pin?
The CT pin is used for a timing capacitor to adjust the automatic restart time after a motor lock condition is cleared.
How does the AH280 detect rotor-lock?
The device detects a motor lock when the Hall signal stops switching, causing it to shut down the output driver.
What are the applications for the AH175?
The device is suitable for rotor position sensing, current switching, encoders, and RPM detection.
From: AnaChip AH280 AH175 Hall Effect Latch For High Temperature
What is the operating temperature range for the AH175?
The device operates between -40°C and +125°C.
From: AnaChip AH280 AH175 Hall Effect Latch For High Temperature