home page>Product Center> Motor driver
A3987SLPTR-T
Product images are for illustrative purposes only
Product details are welcome upon request

A3987SLPTR-T

  • Category:Electric motor driver
  • Product Name:DMOS microstepping driver with converter
  • Manufacturers:Allegro
  • Production Batch Number:15+
  • Encapsulation:24-lead TSSOP
  • Stock Status:There is stock
  • Stock Quantity:5660
  • Minimum order quantity: 1
  • Details:Click here to find a PDF of A3987SLPTR-T
  • Click Request a quote
Contact usOnline customer service1 Online customer service2 Click Send email
  • Product introduction

The A3987 is a complete oneMicrostepping motor driver, with a built-in converter for easy operation. It operates bipolar stepper motors in full, 1/2, 1/4 and 1/16 step modes with output drive capacities of 50 volts and 1.5 amps. The A3987 includes a fixed downtime current regulator that operates in slow or mixed decay mode.

The converter is key to the A3987's ease of implementation. Simply enter a pulse into the "step" input to drive the motor to generate a microstep. There are no phase order tables, high-frequency control lines, or complex interfaces in this program. The A3987 interface is ideal for applications where complex microprocessors are unavailable or overloaded.

The A3987 chopper control automatically selects the current decay mode (slow or mixed). When a "step" signal appears, the converter determines whether that step will produce a higher or lower current in each motor phase. If the charge generates a higher current, set this decay mode to "slow" decay. If the charge produces a lower current, the decay mode is set to 30.1% of the "fast" attenuation. This current attenuation control scheme reduces audible motor noise, increases step accuracy, and reduces power dissipation.

Internal synchronous rectification control circuitry is used to improve power consumption during pulse-width modulation (PWM) operation.

Internal circuit protection includes thermal shutdown due to hysteresis, undervoltage lockout (UVLO), and crossover current protection. No special power-on sequencing is required.

The A3987 is available in an ultra-thin (1.2 mm, maximum height), 24-pin TSSOP (suffix LP) package with exposed thermal shield. Lead-free package with 100% matte tin leadframe plating.

  • Low RDS(on)output
  • Short-to-ground protection
  • Load short-circuit protection
  • Self-drive current attenuation mode detection/selection
  • Mixed with slow current attenuation modes
  • Synchronous rectification for low power dissipation
  • Internal undervoltage lockout (UVLO) and thermal shutdown circuitry
  • Crossover current protection

andA3987SLPTR-TRelated ICs are:


Model Manufacturers lot number encapsulation illustrate
A3987SLPTR-T Allegro 15+ 24-lead TSSOP DMOS microstepping driver with converter

Popular searches


Model Manufacturers lot number encapsulation illustrate
DPX2ME-A106SA106S-34B-2601 ITT 23+ connector Miniature rack and panel connectors designed for blind-mate applications
553291100040 Finder/Fender 2023+ DIP Industrial relay 55.32.9.110.0040 brand new original import
T60404N4646X651 Vacuumschmelze 23+ dip T60404-N4646-X651
JET-DBK-0-1 JAE 23+ tool JAE Avionics Industry JAE Tool JET-DBK-0-1
DZ52-080Z300R024/OH Hartmann-Lammle 23+ module Hartmann-Lammle DZ52-080Z300R024/OH
1SVR040011R2500 ABB 2023+ converter Universal signal converter 110-240VAC 50/60Hz / 100-300VDC
EA12-NO-20-1-31-BD ROSS ENGINEERING 23+ Relays EA12-NO-20-1-31-BD High Voltage Relay
EA12-DT-20-1-31-BD ROSS ENGINEERING 2023+ module High voltage relays
ABCIRHSE06HC2214PCWF80 AB 2023 connector Connector Kit ABCIRH Series Connector Assemblies Brand New Original Imported International Stock
AS7C4096A-15JIN Alliance Memory Inc 23+ SOJ-36 AS7C4096A Series 4-Mbit (512 K x 8) 5 V 15 ns CMOS Static RAM - SOJ-36
US-625AXTLQE ASAHI KEIKI 2023+ weld Temperature sensor
V23154D735B110 TE 2023+ Relays Low Signal Relay - PCB V23154D 735B110
V23154D735F104 TE 23+ Relays Signal Relays, 250 VDC Contact Voltage, 250 VAC Contact Voltage, 806 mW Coil Power (DC), Printed Circuit Board, PCB-THT, Axicom Cradle Relay N
AZ16-12ZIBI-1747-M20 SCHMERSAL 2023+ switch Safety gate switch
PW70d(2x10432Ω/83°) FSG 2023+ potentiometer PW70D(2*1043Ω 1%/83°)(1700Z04-257.106)
PW70d FSG 2023+ potentiometer PW70D(2*1043Ω 1%/83°)(1700Z04-257.106)
S34ML16G202BHI000 Flip Electronics 2051+ 63BGA 16 Gb, 3 V, 4-bit ECC, x8 I/O, SLC NAND Flash Memory for Embedded
FRCIR06RGG18-20S-F80-V0-M20-1.5F ITTVEAM 2023+ connector Connectors, Circular Connectors, Circular Plugs & Receptacles
HRF-AT4521-FL-TR Honeywell 10+11+ SMD RF ATTENUATOR 50OHM 16VQFN
CL1215-02P72ET-U2 Schaltbau 2023+ Contactors CL1215/02 P 72ET-U2 1, 2 and 3 pole AC and DC NO contactors for voltages up to 1,500 V

Allegro brand product recommendations


Model Manufacturers lot number encapsulation illustrate
APEK4989SLD-01-T Allegro 15+ 38-lead TSSOP Dual full-bridge MOSFET driver with microstep converter
A4989SLDTR-T Allegro 15+ 38-lead TSSOP Dual full-bridge MOSFET driver with microstep converter
A3909GLYTR-T Allegro 15+ 10-lead MSOP Dual full-bridge motor driver
APEK3909GLY-01-T Allegro 15+ 10-lead MSOP Dual full-bridge motor driver
A3909GLNTR-T Allegro 15+ 10-lead MSOP Dual full-bridge motor driver
APEK3906SES-01-T Allegro 15+ 20-lead QFN Low voltage stepper and single/dual DC motor drivers
A3906SESTR-T Allegro 15+ 20-lead QFN Low voltage stepper and single/dual DC motor drivers
APEK3918SES-01-T Allegro 15+ 16-lead QFN Low voltage DC motor driver
A3918SESTR-T Allegro 15+ 16-lead QFN Low voltage DC motor driver
APEK3901SEJ-01-T Allegro 15+ 10-lead MLP Dual full-bridge low-voltage motor drivers
A3901SEJTR-T Allegro 15+ 10-lead MLP Dual full-bridge low-voltage motor drivers
APEK3903EEE-01-T Allegro 15+ 8-lead DFN Low voltage DC motor driver
A3903EEETR-T Allegro 15+ 8-lead DFN Low voltage DC motor driver
APEK3908EEE-01-T Allegro 15+ 8-lead DFN Low voltage DC motor driver
A3908EEETR-T Allegro 15+ 8-lead DFN Low voltage DC motor driver
APEK3910EEE-01-T Allegro 15+ 8-lead DFN Dual half-bridge motor driver
A3910EEETR-T Allegro 15+ 8-lead DFN Dual half-bridge motor driver
APEK3921KLP-01-T Allegro 15+ 28-lead TSSOP Automotive full-bridge MOSFET drivers
A3921KLPTR-T Allegro 15+ 28-lead TSSOP Automotive full-bridge MOSFET drivers
APEK3941KLP-01-T Allegro 15+ 28-lead TSSOP Automotive full-bridge MOSFET drivers

Categorical search