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Off-Line Switcher 23,5W SOL8 (7-pin)

Varenummer:101-298
Varekode:TNY277GN
Vægt:0.8g
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Internet-pris
Inkl. moms:
Kr. 23,25
v/10Kr. 17,44
v/100Kr. 11,63
v/500Kr. 10,46
v/2000Kr. 8,73
TNY277GN
The TNY277GN is an energy-efficient offline Switcher incorporates a 700V power MOSFET, oscillator, high voltage switched current source, current limit and thermal shutdown circuitry. It uses an ON/OFF control scheme and offers a design flexible solution with a low system cost and extended power capability. TinySwitch-III combines a high voltage power MOSFET switch with a power supply controller in one device. Unlike conventional PWM controllers, it uses a simple ON/OFF control to regulate the output voltage. The controller consists of an oscillator and enables circuit, current limit state machine, 5.85V regulator, BYPASS/MULTI-FUNCTION pin undervoltage, overvoltage circuit and current limit selection circuitry, over-temperature protection, current limit circuit, leading edge blanking. TinySwitch-III incorporates additional circuitry for line undervoltage sense, auto-restart, adaptive switching cycle on-time extension and frequency jitter.
  • Simple ON/OFF control, no loop compensation needed
  • Selectable current limit through BP/M capacitor value
  • Higher current limit extends peak power/in open frame, continuous power
  • Lower current limit improves efficiency in enclosed adapters/chargers
  • Allows optimum TinySwitch-III choice by swapping devices with no other circuit redesign
  • Maximizes MOSFET and magnetic power delivery
  • ON-time extension - Extends low line regulation range/hold-up time to reduce input bulk capacitance
  • Self-biased - No bias winding or bias components
  • Frequency jittering reduces EMI filter
  • Pin-out simplifies heat sinking to the PCB
  • SOURCE pins are electrically quiet for low EMI
  • Accurate hysteretic thermal shutdown protection with automatic recovery eliminates need for reset
  • Output overvoltage shutdown with optional Zener
  • Line undervoltage detect threshold set using a single optional resistor
  • Very low component count enhances reliability and enables single-sided printed circuit board layout
  • High bandwidth provides fast turn-ON with no overshoot and excellent transient load response
  • Extended creepage between DRAIN and all other pins improves field reliability
  • Easily meets all global energy efficiency regulations
  • No-load <150mW at 265VAC without bias winding, <50mW with bias winding
 
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