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STRA6251 - Flyback Switching Regulators

Download the STRA6251 datasheet PDF. This datasheet also covers the STR-A6251 variant, as both devices belong to the same flyback switching regulators family and are provided as variant models within a single manufacturer datasheet.

General Description

and applications information is provided in Application Note 28103.40, Series STRA6200 Flyback Switching Regulators.

The products described herein are manufactured in Japan by Sanken Electric Co., Ltd.

for sale by Allegro MicroSystems, Inc.

Key Features

  • 50 kHz PWM with ±5% Frequency Jittering Cost Reduction of EMI Noise Filtering.
  • Rugged 650 V Avalanche-Rated MOSFET Simplified Surge Absorption No VDSS Derating Required.
  • Choice of rDS(on) (2.8 Ω or 3.95 Ω maximum).
  • Auto-Burst Mode for Stand-By Operation or Light Loads Less Transformer Audible Noise.
  • Built-In Leading Edge Blanking.
  • Soft Start and Low Start-Up Current Start-Up Circuit Disabled in Operation.
  • Low Operating Current (4 mA max) continued Always order.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (STR-A6251_AllegroMicroSystems.pdf) that lists specifications for multiple related part numbers.

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
g n i h tors c t i a Sw egul R STR-A6251 AND STR-A6252 Universal-Input/15 W 50 kHz Flyback Switching Regulators The STR-A6251 and STR-A6252 are 50 kHz PWM topology (with ±5% frequency jittering for minimum EMI) regulators specifically designed to satisfy the requirements for increased integration and reliability in flyback converters. They incorporate a primary control and drive circuit with avalanche-rated power MOSFETs. The STR-A6252 features higher allowable switching current and lower on-resistance. The STR-A6251 is also available for 67 kHz operation.