A8281SLBTR

Overview

The A8281SLBTR is a specialized power management IC from Allegro MicroSystems, classified as a converter and analog/digital satellite signal receiver regulator. It features a single output channel housed in a 16-SOIC surface-mount package with dimensions of 0.295 inches (7.50 mm) width. The device operates within an input voltage range of 17.5V to 48V and provides regulated outputs at 13V and 18V. It is designed for operation across a temperature range of -20°C to 85°C.

Feature Summary

• Integrated linear regulation for satellite signal applications
• Wide input voltage tolerance for automotive or industrial environments
• Single-channel output configuration for simplified circuit design

Applications

• Satellite signal converters
• Analog satellite receivers
• Digital satellite receivers

Procurement Notes

This component is identified as obsolete and no longer in active production by the manufacturer. Verification of availability should focus on surplus distributors or secondary market sources rather than standard supply chains. Buyers must confirm the specific revision and physical condition of units, as lead times and authenticity cannot be guaranteed through official manufacturing channels. Cross-reference compatible alternatives if current stock is required for new designs.

Selection Notes

Engineers selecting this part should note its discontinued status and limited future support. The fixed output voltages of 13V and 18V restrict its use to specific legacy receiver architectures. Designers should verify that the 16-SOIC footprint matches their PCB layout constraints and ensure that the operating temperature range aligns with the environmental requirements of the target application before sourcing from third-party vendors.

Part Context

The A8281 belongs to a family of specialized regulators designed for niche communication equipment. Unlike general-purpose PMICs, it targets specific signal processing needs in satellite reception hardware. The SLB suffix indicates the specific package type and thermal characteristics. This series represents older technology tailored for analog-to-digital conversion stages in broadcast infrastructure.

Replacement Considerations

No direct public substitute part numbers are confirmed in the provided documentation. Due to the obsolete status, engineers must evaluate functional equivalents based on input voltage range, output specifications, and package compatibility. Consulting Allegro MicroSystems for recommended modern replacements is advised.