A6273KLW

Overview

The A6273KLW is an eight-channel low-side power switch driver manufactured by Allegro MicroSystems, housed in a 20-SOIC surface-mount package. It features N-channel outputs with a maximum load voltage of 50V and a typical on-resistance of 5.5 ohms. The device operates within a supply voltage range of 4.5V to 5.5V and supports a maximum output current of 150mA per channel. Designed for latch drive applications, it utilizes an inverted input type and accepts gated pulse or parallel interfaces. The component functions reliably across an operating temperature range of -40°C to 125°C.

Feature Summary

• Integrates eight independent N-channel low-side power switches for efficient load control
• Utilizes a latch driver architecture to maintain stable output states without continuous signaling
• Incorporates inverted input logic compatible with standard digital control signals
• Supports parallel interface operation for simplified multi-channel synchronization

Applications

• Industrial motor control systems requiring multiple low-side switching stages
• Automotive lighting arrays and accessory power distribution networks
• General-purpose load drivers in embedded electronic control units
• High-density power management modules in industrial automation equipment

Procurement Notes

Verify the specific suffix KLW against official datasheets to confirm the 20-SOIC package configuration and pinout compatibility. Confirm RoHS compliance status as historical records indicate non-compliance for this variant. Check manufacturer discontinuation notices to assess long-term availability and lifecycle risks before finalizing procurement plans.

Selection Notes

Select this component when eight synchronized low-side switches are required within a single integrated circuit footprint. Ensure the application load voltage does not exceed the 50V maximum rating and that the control logic aligns with the inverted input requirement. Consider thermal dissipation capabilities given the 5.5-ohm on-resistance at the target operating current levels.

Part Context

This part belongs to the A6273 series of power drivers from Allegro MicroSystems, designed for robust load switching applications. It serves as a specialized solution for managing multiple loads efficiently compared to discrete transistor arrangements. The series focuses on providing high-current capability within compact surface-mount packages suitable for dense PCB layouts.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.