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Product Detailed Parameters
- Description：IC PFC CTRLR TRANSITION 8SOP
- Series：-
- Mfr：Fremont Micro Devices Ltd
- Package：Tape & Reel (TR),Cut Tape (CT)
- Mode：Discontinuous (Transition)
- Frequency - Switching：-
- Voltage - Supply：85V ~ 265 VAC
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOP
- Current - Startup：50 µA
- Grade：-
- Qualification：-
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Overview
The FT821AA-RT is a Power Factor Correction (PFC) controller manufactured by Fremont Micro Devices Ltd. It operates in discontinuous conduction mode (DCM) and is designed for universal input voltage ranges from 85V to 265VAC. The device is housed in an 8-SOP package with a width of 3.90mm. It supports surface mount installation and functions within a temperature range of -40°C to 125°C. The IC features a low startup current of 50 µA. This component is classified as obsolete.
Feature Summary
- Implements discontinuous conduction mode control for power factor correction applications
- Supports wide-range universal AC input voltages from 85V to 265VAC
- Designed for high-temperature operation up to 125°C
Applications
- Universal input power supplies
- Power factor correction circuits
- Discontinuous conduction mode converter designs
Procurement Notes
This component is officially listed as obsolete by the manufacturer. Verification of availability should focus on distributor surplus or secondary market sources rather than direct manufacturing orders. Confirm package integrity and authenticity when sourcing from non-primary channels due to the discontinued status.
Selection Notes
Engineers selecting this part must account for its obsolete status and limited long-term supply chain support. The 8-SOP package and DCM control architecture are specific design constraints. Alternative solutions should be evaluated if new production volume is required, as primary distribution may not guarantee consistent supply.
Part Context
The FT821AA-RT belongs to the FT821 series of PFC controllers. It is produced by Fremont Micro Devices Ltd. The device integrates control logic for transition mode operation. It is distinct from other PMIC families due to its specific focus on single-stage PFC applications with low startup current requirements.
Replacement Considerations
No public substitute part numbers are confirmed in the provided documentation. Due to the obsolete status, engineers should consult manufacturer recommendations for pin-compatible or functionally equivalent alternatives.
