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TNY289KG

AC/DC Off-Line Switcher IC, TinySwitch-4 Family, Flyback, 85 VAC - 265 VAC, 25 W, eSOP-11

POWER INTEGRATIONS TNY289KG

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Manufacturer Part No:
TNY289KG
Order Code:
2475417
Product Range
TinySwitch-4 Series
Technical Datasheet:
TNY289KG   Datasheet
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Product Range Selector (TinySwitch-4 Series)

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Product Overview

TinySwitch-4 combines a high-voltage power MOSFET switch with a power supply controller in one device. Unlike conventional PWM (pulse width modulator) controllers, it uses a simple ON/OFF control to regulate the output voltage. The controller consists of an oscillator, enable circuit (sense and logic), current limit state machine, 5.85V regulator, BYPASS/MULTIFUNCTION pin undervoltage, overvoltage circuit, and current limit selection circuitry, over-temperature protection, current limit circuit, leading edge blanking, and a 725V power MOSFET. TinySwitch-4 incorporates additional circuitry for line undervoltage sense, auto-restart, adaptive switching cycle on-time extension, and frequency jitter. Figure 3 shows the functional block diagram with the most important features.
  • 725V rated MOSFET
  • Line compensated overload power - no additional components
  • ±5% turn on UV threshold: line voltage sense with single external resistor
  • Simple ON/OFF control, no loop compensation needed
  • Selectable current limit through BP/M capacitor value
  • Tight I2f parameter tolerance reduces system cost
  • ON-time extension - extends low-line regulation range/hold-up time to reduce input bulk capacitance
  • Self-biased: no bias winding or bias components
  • Accurate hysteretic thermal shutdown protection with automatic recovery eliminates need for manual reset
  • Auto-restart delivers <3% of maximum power in short-circuit and open loop fault conditions
  • Output overvoltage shutdown with optional Zener

Applications

Computers & Computer Peripherals, Industrial Automation Control, Consumer Electronics

Product Information

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:
85V

:
265V

:
eSOP

:
11Pins

:
25W

:
Flyback

:
-40°C

:
150°C

:
TinySwitch-4 Series

:
MSL 3 - 168 hours
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Technical Docs (2)

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