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IKSemicon TL494 Pulse-Width-Modulation Controller IC

IKSemicon TL494 Pulse-Width-Modulation Controller IC

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15.95
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The IL494 incorporates on a single monolithic chip all the functions required in the construction of a pulse-width-modulation control circuit. Designed primarily for power supply control, the IL494 contains an on-chip 5-volt regulator, two error amplifiers,
an adjustable oscillator, a dead-time control comparator, a pulse-steering flip-flop, and output-control circuitry. The uncommitted output transistors provide either common-emitter or emitter-follower output capability. Push-pull or single-ended output operation may be selected through the output-control function. The architecture of the IL494 prohibits the possibility of either output being pulsed twice during push-pull operation.

 Features

  • Complete PWM Power-Control Circuitry
  • Uncommitted Outputs for 200-mA Sink or Source Current
  • Output Control Selects Single-Ended or Push-Pull Operation
  • Internal Circuitry Prohibits Double Pulse at Either Output
  • Variable Dead Time Provides Control Over Total Range
  • Internal Regulator Provides a Stable 5-V

Applications

  • Desktop PCs
  • Microwave Ovens
  • Power Supplies: AC/DC, Isolated, With PFC, > 90 W
  • Server PSUs
  • Solar Micro-Inverters
  • Washing Machines: Low-End and High-End E-Bikes
  • Power Supplies: AC/DC, Isolated, No PFC, < 90 W

Datasheet

Specifications 
Product Series IL494
Brand IKSemicon
Package DIP 16
Supply voltage 7-40V
Collector output voltage 40V
Collector output current 250mA
Oscillator Frequency 1-300kHz
Timing Resistor 1.8-500kΩ
Quantity 50
Country of Origin China

 

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