A6273KA

Overview

The Allegro A6273KA is a power switch driver IC featuring an N-channel output configuration with a single channel ratio of 1:1. It operates within a supply voltage range of 4.5V to 5.5V and supports load voltages up to 50V maximum. The device delivers a maximum output current of 250mA with a typical on-resistance of 1.3 ohms. Designed for through-hole mounting, it utilizes a 20-DIP package (0.300 inch width). The component functions as a latching driver with non-inverting input types and supports gate pulse or parallel interfaces. It is rated for an operating temperature range from -40°C to 125°C ambient.

Feature Summary

• Features an N-channel output configuration suitable for low-side switching applications.
• Incorporates a latching driver mechanism with non-inverting input logic.
• Provides thermal protection capabilities within the specified operating temperature range.

Applications

• General purpose power switching circuits requiring low-side control
• Industrial equipment interface drivers
• Consumer electronics load management systems

Procurement Notes

Verify component status carefully as this specific part number is marked as obsolete and no longer manufactured. Confirm availability of direct substitutes such as the TPIC6273N if sourcing new inventory is required. Ensure that the 20-DIP through-hole package specification matches the target PCB footprint requirements. Validate that the 250mA output current rating meets the design load specifications before finalizing procurement decisions.

Selection Notes

Select this component only if through-hole assembly is mandated by the mechanical design constraints. The 250mA current capability defines the maximum load limit; ensure connected devices do not exceed this threshold to prevent overheating due to the 1.3-ohm on-resistance. Verify that the 4.5V to 5.5V supply voltage aligns with the system power rails. Consider the latching behavior when designing control logic to ensure proper state retention during operation cycles.

Part Context

The A6273KA belongs to Allegro MicroSystems' power driver portfolio, specifically designed for managing low-side loads in various electronic systems. It serves as a discrete solution for driving external switches or loads where integrated high-current solutions are unnecessary. The device complements other linear and PWM drivers in the lineup by offering a simple latching interface for basic power distribution tasks.

Replacement Considerations

The A6273KA is obsolete. The TPIC6273N from Texas Instruments is identified as a direct substitute. Verify pin compatibility and electrical characteristics between the Allegro and Texas Instruments parts before implementation.

FAQ

Is the A6273KA currently available for new designs?

No, the A6273KA is obsolete and no longer manufactured by Allegro MicroSystems.

What is the maximum load voltage supported by this driver?

The device supports a maximum load voltage of 50V.