Panasonic AN8267S Data Sheet/Manual
Summary
The AN8267S is a specialized integrated circuit motor driver designed to power brushless DC fan motors for cooling and airflow applications in automation and measuring equipment. This manual provides comprehensive technical specifications, detailing the operation (9.6V–27.6V CC), advanced functions like thermal protection, mandatory anti-back EMF circuit design, and precise wiring guidelines. It is essential documentation for electrical engineers and embedded system designers building reliable cooling subsystems that require motor drive precision and integrated safety features.
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AN8267S Fan Motor Driver Overview
Unit : mm
The AN8267S is an IC to drive the brushless DC fan motors for internally cooling or blowing the air to the office automa- tion equipments and measuring equipmennts.
Features Operating supply voltage range ; VCC=9.6 to 27.6V (Operable at VCC=6V to 9.6V as well) 2-phase half-wave drive, built-in power transistor Built-in lock protective function and automatic reset function Built-in thermal protective circuit (operating temperature: 150˚C typ.) Built-in rotation display function
Application
For drive of brush-less DC fan motor
1.16-pin PANAFLAT Plastic Package (SOP016-P-0300)
Block Diagram
.1 0. 0. VCC OUT2OUT1 0. 9± 0. 0. 9± 0.
VS Hall Bias Lock Protect
Automatic Reset VM
IN (–)
IN (+)
Revolution
TSD TSD PGND
Display
GND RD1 RD2 B1 B2
Page Summary Contents For Panasonic AN8267S Data Sheet/Manual
Manual Details
| Brand | Panasonic |
|---|---|
| Pages | 5 |
| File Size | 53.52 KB |
| Published | June 19, 2026 |
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Frequently Asked Questions
What is the recommended operating voltage range for AN8267S?
The operating supply voltage generally ranges from 9.6V to 27.6V CC, although it can operate at V=6V to 9.6V as well.
Does the AN8267S have built-in protective features?
Yes, it includes built-in thermal protection (operating temperature: –150˚C typ.), lock protection, and automatic reset functions.
How should I suppress counter electromotive power when driving the motor?
Use a capacitor with a value between 1,000pF to 10,000pF connected across the coil output to limit voltage to 55V maximum.
What is required for proper wiring of the AN8267S board?
Separate the power line from the GND line. Ensure Pin12 supplies the power, and use thick, short connections to minimize resistance.
How does the rotation display function work?
It provides a built-in rotation display (output pins 2 and 3) using signals from the Hall element inputs (Pins 1 and 16).