A3998SETTR-T
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Product details are welcome upon request

A3998SETTR-T

  • Category:Driver chip
  • Product Name:Electric motor driver
  • Manufacturers:Allegro
  • Production Batch Number:15+
  • Encapsulation:32-lead QFN
  • Stock Status:There is stock
  • Stock Quantity:3450
  • Minimum order quantity: 1
  • Details:Click here to find pdf information on the A3998SETTR-T
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  • Product introduction

Electric motors designed to meet printers and office automation equipmentdriveand power requirements. This integrated power IC combines two high-current, high-performance full-bridge outputs and is capable of operating in an electrical environment of 50 volts and 1.5 amps. In addition, two power rails are provided specifically for powering a microprocessor or DSP. A switching buck regulator steps down the power supply to a low voltage output that can be adjusted between 3.3 and 5 volts. This voltage can be used to power an external 5 volt rail, feed back to the part, and power an integrated linear regulator adjustable from 1 to 2.5 volts.

The A3998 serial port provides flexible configuration for dual full-bridge motor drivers. Two full bridges can be programmed to control one stepper motor or two DC motors. Both bridges integrate fixed off-time PWM control with programmable attenuation mode selection.

The A3998 is available in a low profile 32-connector QFN package with 5 × 5 mm, 0.90 mm nominal height, and an exposed heat shield (suffix ET). The package is lead (Pb) free and features 100% matte tin leadframe plating.

  • 3.3/5 volt switching regulator
  • 1 to 2.5 volt configurable linear regulator output
  • Dual DMOS full bridge: Drives two DC motors or a single stepper motor
  • ±1.5 A, 50 volt output rating (per bridge)
  • 4-bit microstepping capability
  • Serial port control
  • Configurable mixed, fast and slow current attenuation
  • Synchronous rectification enables low power dissipation
  • Internal undervoltage lockout and thermal shutdown circuitry
  • Crossover current protection
  • Overcurrent protection protection

andA3998SETTR-TRelated ICs are:


Model Manufacturers lot number encapsulation illustrate
A3998SETTR-T Allegro 15+ 32-lead QFN Electric motor driver

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