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Name: A3938SLDTR-T
Brand: Allegro MicroSystems
SKU: A3938SLDTR-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Allegro MicroSystems A3938SLDTR-T

Part No.:: A3938SLDTR-T

Manufacturer:: Allegro MicroSystems

Package:: 38-TFSOP (0.173, 4.40mm Width)

Datasheet:: A3938SLDTR-T.pdf

Description:: IC MOTOR DRIVER 18V-50V 38TSSOP

In Stock:: 3459

Quantity:: Add To Cart

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A3938SLDTR-T Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
MotorType-Stepper:
-
MotorType-ACDC:
Brushless DC (BLDC)
Function:
Controller - Commutation, Direction Management
OutputConfiguration:
Pre-Driver - Half Bridge (3)
Interface:
Parallel, PWM
Technology:
Power MOSFET
StepResolution:
-
Applications:
General Purpose
Current-Output:
-
Voltage-Supply:
18V ~ 50V
Voltage-Load:
-
OperatingTemperature:
-20°C ~ 85°C (TA)
MountingType:
Surface Mount

A3938SLDTR-T this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including A3938SLDTR-T price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for A3938SLDTR-T to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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A3938SLDTR-T information

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A3938SLDTR-T Typical application Circuitry Schematics

The A3938SLDTR-T is a full-bridge MOSFET controller made by Allegro Microsystems. This component is intended to drive a high-voltage brushless DC motor. It operates with a single high-side supply voltage, and features programmable current regulation, overcurrent protection, and fault detection functionality. Here is a brief explanation of the A3938SLDTR-T's fundamental circuit operation:

1. Power Supply: The A3938SLDTR-T requires a power source within a specific voltage range, typically supplied through the VBB and GND pins. The VBB pin is the power supply for the high-side gate drive, and its voltage level determines the voltage at which the MOSFETs operate.

2. PWM Control: The A3938SLDTR-T operates the full-bridge drivers through PWM (pulse-width modulation) inputs (PHASE and ENABLE). PHASE and ENABLE are logic-level inputs that control the direction and enable/disable states of the output bridges, respectively.

3. Current Sensing: The A3938SLDTR-T includes a current sense amplifier which measures the voltage across a sense resistor to regulate the current through the motor.

4. Current Regulation: This device uses a programmable fixed off-time PWM current regulation scheme. An external timing capacitor controls the ON time, while an external reference voltage controls the peak current level.

5. Overcurrent Protection: If the voltage across the current sense resistor exceeds the value set by the reference voltage, the A3938SLDTR-T enters a fault state and disables the output until the fault is cleared.

6. Fault Detection: The A3938SLDTR-T has a fault output (nFAULT) that goes low if an overcurrent or undervoltage condition occurs.

7. Gate Drive: A full-bridge arrangement of four N-channel power MOSFETs is managed by the A3938SLDTR-T. The outputs (OUT1, OUT2, OUT3, OUT4) control the gates of the MOSFETs.

The specific application of the A3938SLDTR-T and how it interacts with other components in a circuit is highly dependent on the specifics of your application, such as the type of motor you are driving, the required torque, speed and power, and the specifics of the rest of your system. As always, make sure to follow the manufacturer's recommendations and guidelines when integrating this component into your design. For the most accurate and up-to-date information, please refer to the datasheet or other technical documentation provided by the manufacturer. This documentation will provide detailed information about the electrical characteristics, pin configuration, and other important information about the device.

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6. What is the process for return or replacement of A3938SLDTR-T?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the A3938SLDTR-T we delivered, we will accept the replacement or return of the A3938SLDTR-T only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of A3938SLDTR-T.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations