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AM9468 - SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER

General Description

The AM9468 is a high performance ultra low noise single phase (single-coil) brushless direct current (BLDC) fan and motor driver.

Key Features

  • Single-Phase Full Wave BLDC Fan/Motor Drive with BTL Output (BTL Amplifier Gain = 49dB).
  • Low Noise Architecture.
  • Wide Operating Voltage Range: 2.4V to 18V.
  • PWM Speed Control with External PWM Input.
  • DC Voltage Speed Control by Adjusting VCONT and RMI Voltage.
  • Hall Bias Output: VHB = 1.25V.
  • Built-in Quick Start Circuit.
  • Lock Protection with Automatic Restart.
  • Frequency Generator (FG) Output.
  • Rotor Lock Detection (RD) Output.
  • Current Limit Ci.

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Other Datasheets by Diodes Incorporated

Part Number Description
AM9469 LOW NOISE SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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NEW PRODUCT Green AM9468 SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER Description Pin Assignments The AM9468 is a high performance ultra low noise single phase (single-coil) brushless direct current (BLDC) fan and motor driver. The integrated full-bridge driver output stage uses a BTL linear driver architecture to minimize audible switching noise and electromagnetic interference (EMI) providing a low noise solution. For system flexibility the motor speed can be controlled by either an external PWM signal or by a DC voltage or from a thermistor network. Based on the input signal, the AM9468 adjusts the output duty cycle. To help protect the motor coil, the AM9468 provides Rotor Lock Protection which shuts down the output drive if rotor lock is detected.