L6565DTR
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STMicroelectronics L6565DTR

Manufacturer No:
L6565DTR
Manufacturer:
STMicroelectronics
Package:
Tape & Reel (TR)
Description:
IC OFFLINE SWITCH FLYBACK 8SO
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The L6565DTR, produced by STMicroelectronics, is a current-mode primary controller IC designed for building offline Quasi-resonant ZVS (Zero Voltage Switching at switch turn-on) flyback converters. This IC is optimized for high efficiency and compliance with various energy standards. It features quasi-resonant operation achieved through a transformer demagnetization sensing input that triggers the MOSFET's turn-on. The device includes line voltage feedforward to maintain constant power delivery despite mains voltage changes and a frequency foldback mechanism to optimize standby efficiency. It also boasts ultra-low start-up and quiescent currents, making it compliant with Blue Angel, Energy Star, and Energy 2000 standards.

Key Specifications

Parameter Min. Typ. Max. Unit
Supply Voltage (Vcc) 10.3 - 18 V
Turn-on Threshold (VccOn) 12.5 13.5 14.5 V
Turn-off Threshold (VccOff) 8.7 9.5 10.3 V
Hysteresis (Hys) 3.65 4 4.3 V
Start-up Current (Istart-up) 45 70 - µA
Quiescent Current (Iq) 2.3 3.5 - mA
Operating Temperature (Tj) -40 - 150 °C
Storage Temperature (Tstg) -55 - 150 °C
Gate Driver Peak Current (IGD) - - ±700 mA
Zero Current Detector Input (IZCD) -10 - 50 mA

Key Features

  • Quasi-resonant (QR) Zero-Voltage-Switching (ZVS) topology for high efficiency
  • Line voltage feedforward to deliver constant power vs. mains change
  • Frequency foldback for optimum standby efficiency
  • Ultra-low start-up current (< 70µA) and quiescent current (< 3.5mA)
  • Disable function (ON/OFF control)
  • 1% precision internal reference voltage (@ Tj = 25°C)
  • ±400mA totem pole gate driver with UVLO pull-down
  • Pulse-by-pulse and hiccup-mode overcurrent protection (OCP)
  • Blue Angel, Energy Star, and Energy 2000 compliant

Applications

  • TV/Monitor SMPS
  • AC-DC adapters/chargers
  • Digital consumer electronics
  • Printers, fax machines, photocopiers, and scanners
  • Industrial and personal electronics

Q & A

  1. What is the primary function of the L6565DTR IC?

    The L6565DTR is a current-mode primary controller IC designed to build offline Quasi-resonant ZVS flyback converters.

  2. How does the L6565DTR achieve quasi-resonant operation?

    Quasi-resonant operation is achieved through a transformer demagnetization sensing input that triggers the MOSFET's turn-on.

  3. What is the purpose of the line voltage feedforward feature?

    The line voltage feedforward feature compensates for power capability variations with mains voltage changes, ensuring constant power delivery.

  4. What are the benefits of the frequency foldback mechanism?

    The frequency foldback mechanism optimizes standby efficiency by automatically lowering the operating frequency at light loads.

  5. What are the typical start-up and quiescent currents of the L6565DTR?

    The typical start-up current is less than 70µA, and the quiescent current is less than 3.5mA.

  6. Does the L6565DTR have overcurrent protection?

    Yes, it features pulse-by-pulse and hiccup-mode overcurrent protection (OCP).

  7. Is the L6565DTR compliant with any energy efficiency standards?

    Yes, it is compliant with Blue Angel, Energy Star, and Energy 2000 standards.

  8. What is the operating temperature range of the L6565DTR?

    The operating temperature range is from -40°C to 150°C.

  9. What is the storage temperature range of the L6565DTR?

    The storage temperature range is from -55°C to 150°C.

  10. What are some common applications of the L6565DTR?

    Common applications include TV/Monitor SMPS, AC-DC adapters/chargers, digital consumer electronics, and printers, fax machines, photocopiers, and scanners.

Product Attributes

Output Isolation:Isolated
Internal Switch(s):No
Voltage - Breakdown:- 
Topology:Flyback
Voltage - Start Up:13.5 V
Voltage - Supply (Vcc/Vdd):10.3V ~ 18V
Duty Cycle:- 
Frequency - Switching:- 
Power (Watts):- 
Fault Protection:Current Limiting
Control Features:- 
Operating Temperature:-40°C ~ 150°C (TJ)
Package / Case:8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:8-SOIC
Mounting Type:Surface Mount
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In Stock

$1.28
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