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Alternatives to STMicroelectronics L6599AD

STMicroelectronics L6599AD and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.

L6599AD compared against its qualified second sources
L6599ADSTMicroelectronicsL6599ADTRSTMicroelectronicsL6599ATDSTMicroelectronics+2more
FFF CompatibilityThe part is identical in silicon, pinout, and SO16 package footprint.Same SO-16 package (150 mil width) with identical physical dimensions.Matches all electrical specifications, operating voltage (8.85V to 16V), and temperature ranges (0°C to 105°C).Fully pin-compatible with identical SO16 package footprint and pin definitions.Identical SO-16 package width and dimensions.Meets or exceeds all performance specifications with an expanded operating temperature range.
AI Summary

L6599AD by STMicroelectronics: Power Supply Controller Resonant Converter Controller 16-SO.

This is the tape-and-reel packaging variant of the queried L6599AD, which comes in tubes. It features identical silicon, packaging, and performance, serving as a 100% true drop-in replacement with no engineering risk.

  • 100% exact electrical and physical drop-in replacement
  • Eliminates any PCB layout redesign or BOM changes
  • Identical timing, protection, and gate drive characteristics
  • Delivered on tape-and-reel rather than in tubes, which may require adjusting automated SMT feeder setup.

This is the high-reliability, wider-temperature version of the L6599AD. It offers a direct, pin-compatible drop-in replacement with improved robustness for industrial or thermally constrained applications.

  • Wider industrial operating temperature range (-40°C to +125°C vs. 0°C to +105°C)
  • Direct pin-for-pin drop-in replacement with identical package dimensions
  • Same pin assignments and electrical baseline parameters
  • Slightly higher unit cost compared to the standard temperature-grade L6599AD.
Lifecycle StatusActiveActiveUnknown
Market AvailabilityIn stockIn stockUnknown
REACHREACHREACHUnknown
RoHSRoHSRoHSUnknown
DescriptionPower Supply Controller Resonant Converter Controller 16-SOPower Supply Controller Resonant Converter Controller 16-SOThis is the high-reliability, wider-temperature version of the L6599AD. It offers a direct, pin-compatible drop-in replacement with improved
ManufacturerSTMicroelectronicsSTMicroelectronicsSTMicroelectronics
TypePower Management (PMIC)Power Management (PMIC)Component
DatasheetN/AOpenN/A
Lead Time99 weeks99 weeksUnknown
Country of OriginSG--
Export Control Class NumberEAR99EAR99EAR99
HTSUS Code8542.39.0070--
Moisture Sensitivity Level3 (168 Hours)--
ApplicationsResonant Converter Controller--
Mounting TypeSurface Mount--
Package / Case16-SOIC (0.154", 3.90mm Width)--
Current - Supply3.5 mA--
Voltage - Supply8.85V ~ 16V--
DigiKey ProgrammableNot Verified--
Operating Temperature0°C ~ 105°C--
Supplier Device Package16-SO--

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Related parts

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Frequently asked questions

Yes. The STMicroelectronics L6599AD is active and in production. The parts listed here are qualified equivalents if you need a second source or better availability.

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