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RT7781 - PWM Flyback Controller

Description

The RT7781 is a series of high-performance current mode PWM controllers with Richtek proprietary PowerZeroTM technology.

The PowerZeroTM provides an excellent green power solution, especially under light-load and no-load conditions.

Features

  • brown-in and brown-out detection. The RT7781 offers complete protection functions such as internal Over-Temperature Protection (OTP), Over-Load Protection (OLP) and VDD Over-Voltage Protection (OVP). It also features Secondary Rectifier Short-circuit Protection (SRSP) and Current Sensing pin (CS) opencircuit protection. Due to these protections, design of power supply unit becomes simple and reliable. The RT7781 provides several versions, shown in the RT7781 version table, for various applicatio.

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Datasheet preview – RT7781

Datasheet Details

Part number RT7781
Manufacturer Richtek
File Size 415.46 KB
Description PWM Flyback Controller
Datasheet download datasheet RT7781 Datasheet
Additional preview pages of the RT7781 datasheet.

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Full PDF Text Transcription

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® RT7781 PowerZeroTM Series PWM Flyback Controller General Description The RT7781 is a series of high-performance current mode PWM controllers with Richtek proprietary PowerZeroTM technology. The PowerZeroTM provides an excellent green power solution, especially under light-load and no-load conditions. The integrated high-voltage device provides fast start-up function without external start-up resistors. It also features brown-in and brown-out detection. The RT7781 offers complete protection functions such as internal Over-Temperature Protection (OTP), Over-Load Protection (OLP) and VDD Over-Voltage Protection (OVP). It also features Secondary Rectifier Short-circuit Protection (SRSP) and Current Sensing pin (CS) opencircuit protection.
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