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ST L6566BTR product image
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ST L6566BTRRoHS

Manufacturer
ST
MPN
L6566BTR
LCSC Part #
C157453
Packaging
SO-16
Customer #
Key Attributes
Multi-mode controller for SMPS
Datasheetpdf iconST L6566BTR
In-Stock: 392
392 In stock, ships now
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QtyUnit PriceTotal Amount
1+$ 2.3951$ 2.40
10+$ 2.0089$ 20.09
30+$ 1.7671$ 53.01
100+$ 1.5205$ 152.05
500+$ 1.4085$ 704.25
1,000+$ 1.3598$ 1359.80
Standard Packaging2500/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/AC DC Converters, Offline Switchers
ManufacturerST
PackagingSO-16
Operating Temperature-40℃~+150℃
Output Current800mA
Frequency - Switching10kHz~300kHz
Pd - Power Dissipation0.75W
Voltage - Breakdown700V
Voltage - Supply8V~23V
FeaturesSoft-start;Over Voltage Protection;Short Circuit Protection;Overtemperature protection (OTP);Over Current Protection;Under Voltage Protection
TopologyFlyback
Output Voltage-
Duty Cycle(Max)75%
Feedback SystemSecondary-Side Feedback
Working ModePWM Modulation;QR
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging2500
Sales UnitPiece

Introduction

AI Translation

The L6566B is an extremely versatile current-mode primary controller ICs, 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 user can pick either of the two depending on application needs. 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 % min. 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. Under some conditions, ZVS (zero-voltage switching) can be achieved. Converter’s power capability rise with the mains voltage is compensated by line voltage feedforward. At medium and light load, as the QR operating frequency equals the oscillator frequency, a function (valley skipping) is activated to prevent further frequency rise and keep the operation as close to ZVS as possible. With either FF or QR operation, at very light load the ICs enter a controlled burst-mode operation that, along with the built-in non-dissipative h

Features

AI Translation
  • Selectable multi-mode operation: fixed frequency or quasi-resonant
  • On-board 700 V high-voltage start-up
  • Advanced light load management
  • Low quiescent current (<3 mA)
  • Adaptive UVLO Line feedforward for constant power capability vs mains voltage
  • Pulse-by-pulse OCP, shutdown on overload (latched or autorestart)
  • Transformer saturation detection
  • Programmable frequency modulation for EMI reduction
  • Latched or autorestart OVP
  • Brownout protection
  • -600/+800 mA totem pole gate driver with active pull-down during UVLO
  • SO16N package

Applications

AI Translation
  • Hi-end AC-DC adapter/charger
  • LCD TV/monitor, PDP
  • digital consumer, IT equipment single-stage PFC