ALTAIR05T-800

Overview

The ALTAIR05T-800 is an off-line all-primary-sensing switching regulator designed for direct connection to rectified mains. It integrates a high-performance low-voltage PWM controller and an 800 V avalanche-rugged power section in a single SO-16N package. The device supports quasi-resonant operation with zero voltage switching, enabling constant voltage and constant current regulation without optocouplers. Key parameters include a maximum input voltage of 23V for the control logic, a switching frequency of 166MHz, and a maximum output current capability of 1A. It operates within a temperature range of -25°C to 150°C.

Feature Summary

• Integrates an 800 V avalanche-rugged internal power section with a high-performance PWM controller chip in a single package.
• Provides constant voltage and constant current output regulation using primary-sensing feedback, eliminating the need for an optocoupler.
• Features unique cable drop compensation to maintain accurate voltage regulation at the end of the output cable.
• Operates in quasi-resonant mode with automatic self-supply and input-voltage feedforward for stable performance.

Applications

• AC-DC chargers for mobile phones
• Wide-range battery chargers
• Adapters for hand-held equipment

Procurement Notes

Verify the specific ordering suffix when purchasing. The base part number refers to the component, while suffixes such as TR indicate reel packaging. Confirm the exact package type and moisture sensitivity level requirements against your manufacturing process specifications before finalizing orders.

Selection Notes

Select this component for designs requiring high-voltage integration and primary-side regulation to reduce bill of materials count. It is suitable for applications needing tight load transient regulation and low standby power consumption. Ensure the transformer design accommodates the required auxiliary winding for proper CV/CC regulation functionality.

Part Context

The ALTAIR05T-800 belongs to the STMicroelectronics ALTAIR family of high-voltage AC-DC converters. This series categorizes devices by MOSFET voltage ratings and regulation features. The ALTAIR05T sub-series specifically integrates 800 V MOSFETs and offers both CV and CC regulation capabilities, distinguishing it from the CV-only ALTAIR04 series.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official STMicroelectronics resources for cross-reference information or pin-compatible alternatives within the same product family.