ST L6566B

隔离8V ~ 23V

Overview

The L6566B is an extremely versatile current-mode primary Pulse Width Modulation (PWM) Controller specifically designed for high-performance offline flyback converters. It is also suited for single-stage single-switch input-current-shaping converters (single-stage PFC) for applications supposed to comply with EN61000-3-2 or JEITA-MITI regulations. Both fixed-frequency (FF) and quasi-resonant (QR) operation are supported. The device features an externally programmable oscillator, it defines converter's switching frequency in FF mode and the maximum allowed switching frequency in QR mode. When FF operation is selected, the ICs work like a standard current-mode controller with a maximum duty cycle limited at 70% minimum. The oscillator frequency can be modulated to mitigate EMI emissions. QR operation, when selected, occurs at heavy load and is achieved through a transformer demagnetization sensing input that triggers MOSFET's turn-on.

Features

Isolated Output Isolation
Packaged with 16-SOIC (0.154, 3.90mm Width)
Switching Frequency at 10kHz~300kHz
With 16 pins
Output Current at 800mA

Surface Mount Mounting Type

Applications

There are a lot of STMicroelectronics
L6566B AC DC Converters applications.

• AC/DC Adaptors/Chargers for E-books
• Adaptors for Portable Media Player
• Adaptors for DSCs
• Set-top boxes
• DVD players
• Records
• Linear Adapter Replacements
• Chargers for cell/cordless phones
• PDAs
• MP3