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                                                                                                      1. Home
                                                                                                      2. Semiconductors - ICs
                                                                                                      3. Power Management ICs - PMIC
                                                                                                      4. Drivers & Controllers
                                                                                                      5. Motor Drivers / Controllers
                                                                                                      Print Page

                                                                                                      A3977SLPTR-T

                                                                                                      Motor Driver/Controller, DMOS, 3V to 5.5V supply, 450 mOhm RDS, 35V/2.5 A/2 Outputs, TSSOP-28

                                                                                                      ALLEGRO MICROSYSTEMS A3977SLPTR-T
                                                                                                      Image is for illustrative purposes only. Please refer to product description.
                                                                                                      ManufacturerALLEGRO MICROSYSTEMS
                                                                                                      Manufacturer Part NoA3977SLPTR-T
                                                                                                      Order Code2840982
                                                                                                      Technical Datasheet

                                                                                                      Data Sheet

                                                                                                      See all Technical Docs
                                                                                                      Packaging Options
                                                                                                      16,510 In Stock

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                                                                                                      16510 Delivery in 4-6 Business Days(UK stock)
                                                                                                      QuantityPrice
                                                                                                      1+Rs.341.390
                                                                                                      10+Rs.276.150
                                                                                                      Price for:Each (Supplied on Cut Tape)
                                                                                                      Minimum: 1
                                                                                                      Multiple: 1
                                                                                                      Rs.341.39
                                                                                                      Enter Your Part No/Line Note
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                                                                                                      This number will be added to the Order Confirmation, Invoice, Dispatch note, Web confirmation Email and Product Label.

                                                                                                      Product Information

                                                                                                      ManufacturerALLEGRO MICROSYSTEMS
                                                                                                      Manufacturer Part NoA3977SLPTR-T
                                                                                                      Order Code2840982
                                                                                                      Technical Datasheet

                                                                                                      Data Sheet

                                                                                                      IC TypeMicrostepping Motor Driver
                                                                                                      Motor TypeStepper
                                                                                                      No. of Outputs2Outputs
                                                                                                      Output Current2.5A
                                                                                                      Output Voltage35V
                                                                                                      IC Case / PackageTSSOP
                                                                                                      No. of Pins28Pins
                                                                                                      Supply Voltage Min3V
                                                                                                      Supply Voltage Max5.5V
                                                                                                      Operating Temperature Min-20°C
                                                                                                      Operating Temperature Max85°C
                                                                                                      Qualification-
                                                                                                      Product Range-
                                                                                                      MSL-
                                                                                                      SVHCNo SVHC (17-Jan-2022)
                                                                                                      Automotive Qualification Standard-
                                                                                                      Driver Case StyleTSSOP

                                                                                                      Product Overview

                                                                                                      The A3977SLPTR-T is a Microstepping DMOS Motor Driver with built-in translator. It is designed to operate bipolar stepper motors in full, half, quarter and eighth-step modes. It includes a fixed off-time current regulator that has the ability to operate in slow, fast or mixed-decay modes. This current-decay control scheme results in reduced audible motor noise, increased step accuracy and reduced power dissipation. The translator is the key to the easy implementation. Simply inputting one pulse on the STEP input drives the motor one step. There are no phase-sequence tables, high-frequency control lines or complex interfaces to program. The interface is an ideal fit for applications where a complex microprocessor is unavailable or over-burdened. Internal synchronous-rectification control circuitry is provided to improve power dissipation during PWM operation. Internal circuit protection includes thermal shutdown with hysteresis, under voltage lockout and crossover-current protection.

                                                                                                      • ±2.5A, 35V Output rating
                                                                                                      • Low RDS(on) outputs, 0.28Ω source, 0.22Ω sink typical
                                                                                                      • Automatic current decay mode detection/selection
                                                                                                      • 3 to 5.5V Logic supply voltage range
                                                                                                      • Mixed, fast and slow current decay modes
                                                                                                      • Home output
                                                                                                      • Synchronous rectification for low power dissipation
                                                                                                      • Internal UVLO and thermal shutdown circuitry
                                                                                                      • Crossover-current protection

                                                                                                      Applications

                                                                                                      Motor Drive & Control

                                                                                                      Technical Specifications

                                                                                                      IC Type

                                                                                                      Microstepping Motor Driver

                                                                                                      No. of Outputs

                                                                                                      2Outputs

                                                                                                      Output Voltage

                                                                                                      35V

                                                                                                      No. of Pins

                                                                                                      28Pins

                                                                                                      Supply Voltage Max

                                                                                                      5.5V

                                                                                                      Operating Temperature Max

                                                                                                      85°C

                                                                                                      Product Range

                                                                                                      -

                                                                                                      SVHC

                                                                                                      No SVHC (17-Jan-2022)

                                                                                                      Driver Case Style

                                                                                                      TSSOP

                                                                                                      Motor Type

                                                                                                      Stepper

                                                                                                      Output Current

                                                                                                      2.5A

                                                                                                      IC Case / Package

                                                                                                      TSSOP

                                                                                                      Supply Voltage Min

                                                                                                      3V

                                                                                                      Operating Temperature Min

                                                                                                      -20°C

                                                                                                      Qualification

                                                                                                      -

                                                                                                      MSL

                                                                                                      -

                                                                                                      Automotive Qualification Standard

                                                                                                      -

                                                                                                      Technical Docs (2)

                                                                                                      Product Change Notice EN

                                                                                                      Technical Data Sheet EN

                                                                                                      Legislation and Environmental

                                                                                                      Country of Origin:
                                                                                                      Country in which last significant manufacturing process was carried outCountry of Origin:
                                                                                                      United States
                                                                                                      Country in which last significant manufacturing process was carried out
                                                                                                      Tariff No:85389000
                                                                                                      US ECCN:EAR99
                                                                                                      EU ECCN:NLR
                                                                                                      RoHS Compliant:Yes

                                                                                                      RoHS

                                                                                                      RoHS Phthalates Compliant:Yes

                                                                                                      RoHS

                                                                                                      SVHC:No SVHC (17-Jan-2022)
                                                                                                      Download Product Compliance Certificate

                                                                                                      Product Compliance Certificate

                                                                                                      Weight (kg):.000168
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