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RICHTEK RT7781GGS

Manufacturer
RICHTEKAsian Brands
MPN
RT7781GGS
LCSC Part #
C3024481
Packaging
SOP-7
Customer #
Key Attributes
PWM Flyback Controller
DatasheetRICHTEK RT7781GGS
RoHS Compliance1 documents available
In-Stock: 32
32 In stock, ships now
Minimum: 1Multiple: 1Sales Unit: Piece
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QtyUnit PriceTotal Amount
1+$ 1.3054$ 1.31
10+$ 1.101$ 11.01
30+$ 0.9883$ 29.65
100+$ 0.8611$ 86.11
500+$ 0.7195$ 359.75
1,000+$ 0.6938$ 693.80
Standard Packaging2500/Full Reel
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/AC DC Converters, Offline Switchers
ManufacturerRICHTEK
PackagingSOP-7
Operating Temperature-
Frequency - Switching-
Output Current-
Pd - Power Dissipation-
Voltage - Supply-
Voltage - Breakdown700V
TopologyFlyback
FeaturesHigh voltage direct start;Brown-in/Brown-out detection;EMI optimization (spread spectrum);Overtemperature protection (OTP);Over Voltage Protection
Output Voltage-
Duty Cycle(Max)-
Working ModePWM Modulation
Feedback SystemSecondary-Side Feedback
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Introduction

AI Translation

The RT7781 is a series of high-performance current mode PWM controllers with 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) open-circuit protection. Due to these protections, design of power supply unit becomes simple and reliable. The RT7781 provides several versions for various applications. It is targeted for cost-effective and compact power supply units such as NB adaptors.

Features

AI Translation
  • PowerZeroTM Technology
  • Integrated 700V Start-Up Device
  • Brown-In and Brown-Out
  • Low No-Load Input Power (<5000W) (RT7781G/L/A/C)
  • Low No-Load Input Power (<30mW) (RT7781T)
  • Accurate Over Load Protection
  • Driver Capability: 400mA/ - 400mA
  • PRO Pin for Arbitrary External Protection (RT7781G/L/A/T)
  • ACD Pin for TV Application (RT7781C)
  • Disable Mode for 30mW Solution (RT7781T)
  • Jittering Frequency
  • Soft Driving for Reducing EMI Noise
  • VDD Over Voltage Protection
  • Internal Over Temperature Protection
  • Secondary Rectifier Short Protection
  • CS Pin Open Protection
  • RoHS Compliant and Halogen Free

Applications

AI Translation
  • NB Adaptor
  • Switching AC/DC Adaptor with Low No-Load Input Power
  • TV and Monitor Applications
  • Open Frame Power Supply