Mfr Part #:

A3901SEJTR-T

The Allegro Microsystems A3901SEJTR-T is a dual full-bridge motor driver IC designed for bipolar stepper and DC motors. It operates from 2.5V to 5.5V.

✓ Total Stock: 31,566 pcs

$ Price Range: $2.25

A3901SEJTR-T Available from 4 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Risen Electronics ✓ Non-Authorised Inventory information	20,000 pcs On Request	20000 pcs	On Request	1	On Request	On Request	On Request	On Request	2026-02-16 21:33:16
Optech Co.,Limited ✓ Non-Authorised Inventory information	9,185 pcs On Request	9185 pcs	On Request	1	On Request	On Request	21+	On Request	On Request
Xingangxin ✓ Non-Authorised Inventory information	1,300 pcs On Request	1300 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Smaxon Electronics ✓ Non-Authorised Inventory information	1,081 pcs On Request	1081 pcs	On Request	1	On Request	On Request	1325+	On Request	On Request

A3901SEJTR-T Description

Short technical summary and product information.

The Allegro Microsystems A3901SEJTR-T is a dual full-bridge motor driver IC. It is designed for controlling bipolar stepper and DC motors, offering a voltage range of 2.5V to 5.5V and a current handling capability of 400mA.

This integrated circuit features a fully integrated control and power stage, simplifying design and implementation. It supports general-purpose applications and provides step resolutions of 1 and 1/2. The device utilizes Power MOSFET technology and operates with a parallel interface.

The A3901SEJTR-T is housed in a 10-TDFN (3x3) surface mount package, specifically a 10-WFDFN Exposed Pad, making it suitable for compact electronic designs. Its operating temperature range is -20°C to 150°C (TJ).

A3901SEJTR-T Quick Information

Product Type: Motor Driver IC

Canonical Name: A3901SEJTR-T Dual Full-Bridge, Low-Voltage Motor Driver

Subcategory: Brush DC Motor Drivers

A3901SEJTR-T Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

Lead Free: Yes

A3901SEJTR-T Estimated Pricing

Qty	Low	High
1+	$2.25	$2.25

Estimated market price range - modelled values for guidance only, not live distributor offers.

A3901SEJTR-T Features

Dual full-bridge motor driver IC.
Operates from 2.5V to 5.5V supply.
Handles up to 400mA current.
Supports bipolar stepper and DC motors.
Surface mount 10-TDFN package.

A3901SEJTR-T Applications

Bipolar stepper motor driver applications
Low-voltage DC motor control systems
General purpose motor driving circuits
Surface mount motor driver designs

A3901SEJTR-T FAQs

7 frequently asked questions generated from this part’s specifications.

What is the operating voltage range of the A3901SEJTR-T?

The A3901SEJTR-T operates from 2.5V to 5.5V.

What is the operating temperature range of the A3901SEJTR-T?

The A3901SEJTR-T operates from -20°C to 150°C (junction temperature).

What package does the A3901SEJTR-T come in?

The A3901SEJTR-T is housed in a 10-TDFN (3x3 mm) surface-mount package.

What is the output current of the A3901SEJTR-T?

The A3901SEJTR-T can deliver up to 400 mA of output current.

What motor types does the A3901SEJTR-T support?

The A3901SEJTR-T supports bipolar stepper motors.

What step resolutions are supported by the A3901SEJTR-T?

The A3901SEJTR-T supports full-step and half-step resolutions.

What interface does the A3901SEJTR-T use?

The A3901SEJTR-T uses a parallel interface for control.

Category	Motor Drivers, Controllers
Manufacturer Name	Allegro Microsystems
Applications	General Purpose
Current	400 mA
Function	Driver - Fully Integrated, Control and Power Stage
Halogen Free	No
Interface	Parallel
Motor Type	Bipolar
Mounting Type	Surface Mount
Operating Temperature	-20°C to 150°C
Output Configuration	Half Bridge (4)
SVHC Present	Not Present
Step Resolution	1, 1/2
Supplier Device Package	10-TDFN (3x3)
Technology	Power MOSFET
Voltage	2.5 V to 5.5 V