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AM5138 - Single Phase Full-Wave Motor Pre-Driver

General Description

Fig.1 Block diagram PIN No Pin Name Function 1 RMI Minimum Speed setting terminal 2 VL Hi duty slope setting terminal 3 VH Low duty slope setting terminal 4 VREF Reference voltage output terminal 5 PWM PWM signal input terminal 6 Signal 1 Signal output terminal 7 GND Ground terminal

Key Features

  • s 1) Slope adjust mode for VH and VL pin control. 2) Soft switched drive. 3) PWM speed control. 4) Rotating speed pulse signal (FG) output. 5) Incorporating lock protection and automatic restart circuit. 6) Power Tr incorporated. 7) Hall Bias voltage built-in. 8) Soft start function built-in for reducing power up acoustic noise.
  • Absolute Maximum Ratings (Ta = 25℃) Parameter Symbol Limits Unit Supply voltage FG single output current FG single output voltage Vref output current HB ou.

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Datasheet Details

Part number AM5138
Manufacturer AMtek
File Size 377.27 KB
Description Single Phase Full-Wave Motor Pre-Driver
Datasheet download datasheet AM5138 Datasheet

Full PDF Text Transcription (Reference)

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AM5138 Motor Pre-Driver ICs Single Phase Full-Wave Motor Pre-Driver for Fan Motor AM5138 This is the summary of application for AM5138 optimum for driving 12V fan for general consumer equipment. The most attractive function of AM5138 is slope adjust by external resistor, that can meet most of fan request. This IC employs soft switching drive, Bi-CMOS process, and realizes silent drive, low ON resistor, and low power consumption. This also incorporate lock protection and auto restart circuit which does not require external capacitor.  Applications Optimum for driving 12V fan for general consumer equipment  Features 1) Slope adjust mode for VH and VL pin control. 2) Soft switched drive. 3) PWM speed control. 4) Rotating speed pulse signal (FG) output.