Stepper Motor Controller, PDSO38, TSSOP-38


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Please submit RFQ for A4989SLDTR-T or email to us: Email: [email protected], we will contact you in 12 hours.

Overview of A4989SLDTR-T

DescriptionThe A4989 is a dual full-bridge gate driver with integrated microstepping translator suitable for driving a wide range of higher power industrial bipolar 2-phase stepper motors (typically 30 to 500 W). Motor power is provided by external N-channel power MOSFETs at supply voltages from 12 to 50 V. Features and Benefits▪ 2-wire step and direction interface▪ Dual full-bridge gate drive for N-channel MOSFETs▪ Operation over 12 to 50 V supply voltage range▪Synchronous rectification▪Cross-conduction protection▪ Adjustable mixed decay▪ Integrated sinusoidal DAC current reference▪ Fixed off-time PWM current control▪ Enhanced low current control when microstepping▪ Pin compatible with the A3986


Key Features

  • ▪ 2-wire step and direction interface
  • ▪ Dual full-bridge gate drive for N-channel MOSFETs
  • ▪ Operation over 12 to 50 V supply voltage range
  • ▪ Synchronous rectification
  • ▪ Cross-conduction protection
  • ▪ Adjustable mixed decay
  • ▪ Integrated sinusoidal DAC current reference
  • ▪ Fixed off-time PWM current control
  • ▪ Enhanced low current control when microstepping
  • ▪ Pin compatible with the A3986


The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Pbfree Code Yes Rohs Code Yes
Part Life Cycle Code Active Ihs Manufacturer ALLEGRO MICROSYSTEMS LLC
Part Package Code TSSOP Package Description TSSOP,
Pin Count 38 Reach Compliance Code compliant
ECCN Code EAR99 HTS Code 8542.39.00.01
Samacsys Manufacturer Allegro Microsystems Additional Feature ALSO REQUIRED MOTOR SUPPLY VOLTAGE OF 12V TO 50V
JESD-609 Code e3 Length 9.7 mm
Moisture Sensitivity Level 2 Number of Functions 1
Number of Terminals 38 Operating Temperature-Max 85 °C
Operating Temperature-Min -20 °C Package Body Material PLASTIC/EPOXY
Package Code TSSOP Package Shape RECTANGULAR
Package Style SMALL OUTLINE, THIN PROFILE, SHRINK PITCH Peak Reflow Temperature (Cel) 260
Qualification Status Not Qualified Seated Height-Max 1.2 mm
Supply Voltage-Max (Vsup) 5.5 V Supply Voltage-Min (Vsup) 3 V
Supply Voltage-Nom (Vsup) 5 V Surface Mount YES
Temperature Grade OTHER Terminal Finish Matte Tin (Sn)
Terminal Form GULL WING Terminal Pitch 0.5 mm
Terminal Position DUAL Time@Peak Reflow Temperature-Max (s) 40
Width 4.4 mm Product Status Active
Motor Type - Stepper Bipolar Function Controller - Commutation, Direction Management
Output Configuration Pre-Driver - Half Bridge (4) Interface Logic
Technology Power MOSFET Step Resolution 1, 1/2, 1/4, 1/16
Applications General Purpose Voltage - Supply 3V ~ 5.5V
Voltage - Load 12V ~ 50V Operating Temperature -20°C ~ 85°C (TA)
Mounting Type Surface Mount Package / Case 38-TFSOP (0.173", 4.40mm Width)
Supplier Device Package 38-TSSOP

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