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Two-Phase Half-Wave Motor Predriver

Qty Price
1-9 $0.80
10-24 $0.70
25-99 $0.64
100-249 $0.54
250-499 $0.49
500-749 $0.38
750-999 $0.29
1000+ $0.25


  • Built-In Lock Detection and Rotational Speed
    Sensing Mechanisms
  • Compact 8-Pin Package Reduces Number of
    External Components Required
  • Automatic Restart When Motor Lock Is Undone
  • Hall Amplifier Inputs Have Hysteresis

Texas Instruments  TMP821DR

The TMP821 device is a two-phase half-wave motor predriver that is suited for fan motors, which has winding in push-pull configuration. It uses differential hall effect sensors for commutation signals for two of the switches in power circuit. The device has a very small pin count, making it very simple to use.