A4945KLJTR-T

Description：IC FAN DRIVER BLDC 8SOIC
Series：-
Mfr：Allegro MicroSystems
Package：Tape & Reel (TR)

SKU:a093d37c8c61 Category: Motor Drivers, Controllers Brand: Allegro MicroSystems

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Product introduction

Product Detailed Parameters

Description：IC FAN DRIVER BLDC 8SOIC
Series：-
Mfr：Allegro MicroSystems
Package：Tape & Reel (TR)
Motor Type - Stepper：Multiphase
Motor Type - AC, DC：Brushless DC (BLDC)
Function：Fan Control
Output Configuration：Half Bridge (3)
Interface：Analog
Technology：Power MOSFET
Step Resolution：-
Applications：Fan Motor Driver
Current - Output：1.8A
Voltage - Supply：4V ~ 18V
Voltage - Load：-
Operating Temperature：-40°C ~ 125°C (TA)
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
Supplier Device Package：8-SOIC-EP
Grade：-
Qualification：-

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A4945KLJTR-T

Overview

The A4945KLJTR-T is a BLDC fan driver IC from Allegro Microsystems, packaged in an 8-pin SOIC. It operates with a supply voltage range of 6 V to 40 V and delivers up to 1 A output current. The device supports PWM speed control and includes integrated Hall effect sensors for commutation. It functions within a temperature range of -40 °C to +125 °C.

Feature Summary

Integrates Hall effect sensors for sensorless or sensored commutation
Supports PWM speed control input
Provides over-temperature and over-current protection

Applications

Computer cooling fans
Server chassis ventilation
Consumer appliance blowers

Procurement Notes

Verify the specific suffix 'KLJTR-T' against the manufacturer's latest documentation to confirm pinout and electrical specifications. Note that this component may be obsolete; check for active replacement part numbers before finalizing procurement plans.

Selection Notes

Select this component for applications requiring a compact 8-pin solution for small BLDC fans. Ensure the system voltage stays within the 6 V to 40 V range and that thermal management accommodates the operating environment.

Part Context

This part belongs to Allegro's line of motor drivers designed for low-power BLDC applications. It integrates power switches and control logic into a single package to reduce board space and simplify design compared to discrete solutions.

Replacement Considerations

Public sources indicate the A4945KLJTR-T is obsolete. Verify compatible substitutes such as the A4945GLTR-T or other Allegro BLDC drivers with matching pinouts and electrical ratings.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.