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LD5523Q - Multi-Mode PWM Controller

Download the LD5523Q datasheet PDF. This datasheet also covers the LD5523P variant, as both devices belong to the same multi-mode pwm controller family and are provided as variant models within a single manufacturer datasheet.

General Description

In order to enhance the efficiency performance, the LD5523P integrates the multi-mode PWM controller, which consists of Quasi-Resonant (QR) PWM control for light load condition and peak load mode for heavy load condition.

Key Features

  • Secondary-side feedback control with quasi-resonant + peak load mode operation.
  • Low Startup Current (.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LD5523P-LeadtrendTechnology.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number LD5523Q
Manufacturer Leadtrend Technology
File Size 0.96 MB
Description Multi-Mode PWM Controller
Datasheet download datasheet LD5523Q Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
LD5523D2 PWM+QR Multi-mode Controller Leadtrend
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LD5523M1 Multi-Mode PWM Controller of Flyback Leadtrend
LD5523T Multi-Mode PWM Controller of Flyback Leadtrend
LD5520 Quasi-Resonant PWM Controller Leadtrend

Other Datasheets by Leadtrend Technology

Part Number Description
LD5523 Multi-Mode PWM Controller
LD5523E Multi-Mode PWM Controller
LD5523H Multi-Mode PWM Controller
LD5523P Multi-Mode PWM Controller
LD5523R Multi-Mode PWM Controller

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
LD5523P/Q 04/26/2017 Multi-Mode PWM Controller of Flyback with Frequency Swapping and Integrated Protection REV.00 General Description In order to enhance the efficiency performance, the LD5523P integrates the multi-mode PWM controller, which consists of Quasi-Resonant (QR) PWM control for light load condition and peak load mode for heavy load condition. Moreover, the QR controller not only gains the system performance, but also brings the worse EMI capability, while the frequency swapping function of LD5523P can reduce the EMI emission of SMPS and helps the power circuit designers to simply deal with EMI filter and saves several component and developing time.