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LNK305 Datasheet PDF

Part Series:LNK305 Series
Category:AC-DC Converters
Description:AC-DC Off-Line Switcher, Integrated Power MOSFET, 85-265VAC input, 66kHz, 120mA output, DIP-8
Document:LNK305PN Datasheet PDF (20 Pages)

LNK305 AC-DC Converters Datasheet PDF

#1
LNK305PN
2.2
Power Integrations
#2
LNK305GN-TL
2.1
Power Integrations
#3
LNK305DN-TL
1.9
Power Integrations
#4
LNK305GN
1.7
Power Integrations

LNK305 Datasheet PDF AC-DC Converters

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LNK305PN - Power Integrations Specifications

TYPE
DESCRIPTION
Mounting Style
Through Hole
Frequency
66.0 kHz
Number of Pins
8 Pin
Supply Voltage (DC)
374V (max)
Case/Package
DIP-8
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LNK305PN - Power Integrations Function Overview

The LNK305PN is a LinkSwitch-TN lowest component count, energy-efficient off-line Switcher, specifically designed to replace all linear and capacitor-fed (cap dropper) non-isolated power supplies in the under 360mA output current range at equal system cost while offering much higher performance and energy efficiency. LinkSwitch-TN devices integrate a 700V power MOSFET, oscillator, simple on/off control scheme, a high-voltage switched current source, frequency jittering, cycle-by-cycle current limit and thermal shutdown circuitry onto a monolithic IC. The start-up and operating power are derived directly from the voltage on the DRAIN pin, eliminating the need for a bias supply and associated circuitry in buck or flyback converters. The fully integrated auto-restart circuit in the LNK304-306 safely limits output power during fault conditions such as short-circuit or open loop, reducing component count and system-level load protection cost.
Lowest Component Count Buck Converter Solution
Fully integrated Auto-restart for Short-circuit and open loop fault protection saves component costs
66kHz Operation with accurate current limit, allows low cost Off-the-shelf 1mH Inductor
Tight Tolerances and Negligible Temperature Variation
High Breakdown Voltage of 700V Provides Excellent Input Surge Withstand
Frequency Jittering Dramatically Reduces EMI (~10dB)
High Thermal Shutdown Temperature (+135°C Minimum)
Much Higher Performance over Discrete Buck and Passive Solutions
Supports Buck, Buck-boost and Flyback Topologies
System Level Thermal Overload, Output Short-circuit and Open Control Loop Protection
Excellent Line and Load Regulation Even with Typical Configuration
High Bandwidth Provides Fast Turn-on with No Overshoot
Current Limit Operation Rejects Line Ripple
Universal Input Voltage Range (85 to 265VAC)
Built-in Current Limit and Hysteretic Thermal Protection
Higher Efficiency than Passive Solutions
Higher Power Factor than Capacitor-fed Solutions
Entirely Manufacturable in SMD
EcoSmart™ - Extremely Energy Efficient
Consumes typically 50/80mW in self-powered buck topology at 115/230VAC input with no-load
Maximum ratings specified may be applied, one at a time, without causing permanent damage to the product.
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