The A89347 integrated circuit (IC) can drive a wide variety of fan motor types. The IC has low driver-on resistance (RDS(ON)) power outputs that are 3 A-capable. To drive 12 V fans in the 1 W to 30 W range, a high-power package option (suffix LP) is available. A key feature of the A89347 is closed-loop speed control with flexible speed-curve configurations. This feature allows elimination of the microcontroller unit (MCU) for most applications that typically require them.
Product Details
Product Details
Top Features
The EEPROM included in the IC provides several functions:
- Ability to choose between open-loop and closed-loop operation and to set a specific desired speed-curve configuration.
- Ability to customize the startup profile to better match the motor and load pair.
- Ability to choose various device options that change functional operation.
