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A3979SLPTR-T

Name: A3979SLPTR-T
Brand: ALLEGRO
SKU: JT24-A3979SLPTR-T
Price: 0.0001 USD
Availability: InStock
Rating: 5 (1 reviews)

DMOS Stepper Motor Driver 5V 28-Pin TSSOP EP T/R

Manufacturer :	Allegro MicroSystems, Inc
Package/Case :	TSSOP-28
Product Categories :	PMIC - Motor and Fan Controllers, Drivers
Datasheet:	A3979SLPTR-T Datasheet (PDF)
RoHs Status:	Lead free/RoHS Compliant
In-stock:	1747

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A3979SLPTR-T Product Details

Description

The A3979 is a complete microstepping motor driver with built-in translator, designed as a pin-compatible replacement for the successful A3977, with enhanced microstepping (1/16 step) precision. It is designed to operate bipolar stepper motors in full-, half-, quarter-, and sixteenth-step modes, with an output drive capacity of up to 35 V and ±2.5 A. The A3979 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 of the A3979. It allows the simple input of one pulse on the STEP pin to drive the motor one microstep, which can be either a full step, half, quarter, or sixteenth, depending on the setting of the MS1 and MS2 logic inputs. There are no phase-sequence tables, high-frequency control lines, or complex interfaces to program. The A3979 interface is an ideal fit for applications where a complex microprocessor is unavailable or is overburdened.

Internal synchronous-rectification control circuitry is provided to improve power dissipation during PWM operation. Internal circuit protection includes: thermal shutdown with hysteresis, UVLO (undervoltage lockout), and crossover-current protection. Special power-on sequencing is not required.

The A3979 is supplied in a low-profile (height ≤1.20 mm), 28-pin TSSOP with exposed thermal pad. The package is lead (Pb) free, with 100% matte tin leadframe plating.

Features and Benefits
▪ ±2.5 A, 35 V output rating
▪ Low RDS(On) outputs: 0.28 Ω source, 0.22 Ω sink, typical
▪ Automatic current decay mode detection/selection
▪ 3.0 to 5.5 V logic supply voltage range
▪ Slow, Fast or Mixed current decay modes
▪ Home output
▪ Synchronous rectification for low power dissipation
▪ Internal UVLO and thermal shutdown circuitry
▪ Crossover-current protection

A3979SLPTR-T

A3979SLPTR-T Pinout
(Picture: Pinout)

A3979SLPTR-T Block Diagram
(Picture: Diagram)

Technical Parameters

Manufacturer
ALLEGRO
Packing
Tape & Reel (TR)/Cut Tape (CT)/Tray/Tube
RoHs Status
Lead free/RoHS Compliant
Package/Case
TSSOP-28

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Estimated Delivery Time: Nov 19 - Nov 24 days (choose Expedited at checkout).

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UPS
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TNT
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2-5 days
EMS
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5-14 days
REGISTERED AIR MAIL
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7-30 days

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Step2: Vacuum Packaging
Step3: Anti-Static Bag
Step4: Individual Packaging
Step5: Packaging Boxes
Step6: Bar-Code Shipping Tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

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We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

Guarantees

1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.

FAQ:

Q: How does Jotrin guarantee that A3979SLPTR-T is the original manufacturer or agent of ALLEGRO?: We have a professional business development department to strictly test and verify the qualifications of ALLEGRO original manufacturers and agents. All ALLEGRO suppliers must pass the qualification review before they can publish their A3979SLPTR-T devices; we pay more attention to the channels and quality of A3979SLPTR-T products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of A3979SLPTR-T chips? Including ALLEGRO original factory information, PMIC - Motor and Fan Controllers, Drivers application, A3979SLPTR-T pictures?: You can use Jotrin's intelligent search engine, or filter by PMIC - Motor and Fan Controllers, Drivers category, or find it through Allegro MicroSystems, Inc Information page.
Q: Are the ALLEGRO's A3979SLPTR-T price and stock displayed on the platform accurate?: The ALLEGRO's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for A3979SLPTR-T, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
Q: Can I place an order offline?: Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
Q: What forms of payment can I use in Jotrin?: TT Bank, Paypal, Credit Card, Western Union, and Escrow is all acceptable.
Q: How is the shipping arranged and track my package?: Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of A3979SLPTR-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 A3979SLPTRT we delivered, we will accept the replacement or return of the A3979SLPTR-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 A3979SLPTR-T.
(3)The A3979SLPTR-T 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
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as A3979SLPTR-T datasheet pdf, A3979SLPTR pin diagram?: Need any After-Sales service, please feel free contact us: sales@jotrin.com

Allegro MicroSystems, Inc

Allegro MicroSystems, Inc. is a leader in developing,manufacturing and marketing high-performance power and Hall-effect sensor integrated circuits....