A4941KLPTR-T Equivalent & Substitute Parts

Part Overview

The A4941KLPTR-T is a fully integrated motor driver IC from Allegro MicroSystems designed for brushless DC (BLDC) motor applications. This device combines control and power stage functionality in a compact 20-TSSOP package with exposed pad, operating across a 5V to 16V supply range with 500mA output current capability. The part is currently in active production status with 707 units in stock.

Substitute parts are identified when design requirements change, inventory constraints occur, or when alternative control interfaces better suit application needs. The A5947KLPTR-T represents a functionally related alternative from the same manufacturer, though with different operational characteristics and design status.

Substiute Parts

A4941KLPTR-T

Allegro MicroSystemsIn Stock: 752A4941KLPTR-T Datasheet

Current PartRFQ

A5947KLPTR-T

Allegro MicroSystemsIn Stock: 5868A5947KLPTR-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The A5947KLPTR-T qualifies as a substitute based on the following alignment criteria:

Common Electrical & Mechanical Parameters:

• Identical package format: 20-TSSOP with exposed pad
• Same motor type classification: Brushless DC (BLDC)
• Matching mounting technology: Surface Mount
• Identical RoHS3 compliance and MSL rating
• Same manufacturer ecosystem: Allegro MicroSystems

Substitution Constraints: The A5947KLPTR-T operates with an extended temperature range (-40°C ~ 125°C) and includes automotive-grade qualification (AEC-Q100). However, this part carries "Not For New Designs" status and features a different control interface (Analog, I2C, PWM versus PWM-only). Output current and supply voltage specifications are not provided for the A5947KLPTR-T, requiring verification against application requirements before substitution.

Parameter Comparison

Engineering Selection Recommendations

A4941KLPTR-T is the primary choice for new designs. This part maintains active production status, offers PWM-only control simplicity, and provides clearly defined electrical specifications (500mA output, 5V-16V supply range). The -40°C to 105°C operating range covers standard industrial and consumer applications.

A5947KLPTR-T is applicable only for existing designs or legacy system maintenance. This part carries "Not For New Designs" status and should not be selected for new product development. Its primary advantage is AEC-Q100 automotive qualification and extended temperature range (-40°C to 125°C), suitable only for automotive applications with existing design commitments. The expanded control interface (Analog, I2C, PWM) requires firmware compatibility verification. Unspecified output current and supply voltage parameters necessitate datasheet consultation before substitution.

Frequently Asked Questions (FAQ)

Q: Can A5947KLPTR-T replace A4941KLPTR-T in new designs?

A: No. The A5947KLPTR-T carries "Not For New Designs" status. New designs must use A4941KLPTR-T or pursue alternative active-status components from Allegro MicroSystems.

Q: Are the packages physically identical?

A: Yes. Both parts use 20-TSSOP with exposed pad in identical 0.173" width format. PCB footprints are compatible for surface mount assembly.

Q: What are the key electrical differences?

A: A4941KLPTR-T specifies 500mA output current and 5V-16V supply range. A5947KLPTR-T does not provide these specifications in the available data. The A5947KLPTR-T supports additional control interfaces (Analog, I2C) beyond PWM.

Q: Does temperature range affect substitution?

A: A5947KLPTR-T extends to 125°C versus A4941KLPTR-T's 105°C maximum. This is beneficial for high-temperature environments but does not enable substitution for new designs due to product status constraints.

Q: Is automotive qualification required?

A: Only if the application demands AEC-Q100 compliance. A4941KLPTR-T does not specify automotive qualification. A5947KLPTR-T includes AEC-Q100 qualification but is restricted to legacy designs.

Q: Are compliance ratings identical?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL rating 2 (1 Year). ECCN and HTSUS classifications are identical.