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LD7552 - Green Mode PWM Controller

Description

The LD7552 is a low cost, low startup current, current mode PWM controller with green-mode power-saving operation.

Features

  • z High-Voltage CMOS Process with Excellent ESD Protection Very Low Startup Current (Typical 5µA) Under Voltage Lockout (UVLO) Current Mode Control with Cycle-by-Cycle Peak Current Limiting Leading-Edge Blanking on CS Pin Programmable Switching Frequency Internal Slope Compensation Non-audible-noise Green Mode Control 500mA Driving Capability Proprietary Green-Mode Control for Power Saving 1.

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Datasheet Details

Part number LD7552
Manufacturer Leadtrend
File Size 261.16 KB
Description Green Mode PWM Controller
Datasheet download datasheet LD7552 Datasheet

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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.

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www.DataSheet4U.com LD7552 2/21/2005 Green-Mode PWM Controller General Description The LD7552 is a low cost, low startup current, current mode PWM controller with green-mode power-saving operation. The integrated functions such as the leading-edge blanking of the current sensing, internal slope compensation and the small package provide the users a high efficiency, minimum external component counts, and low cost solution for AC/DC power applications. The special green-mode control does not only achieve low power consumption but also offer a non-audible-noise operation when the LD7552 operates under light load or no load condition. The LD7552 is designed for the switching adaptor with 30W~60W output. The LD7552 is offered in both SOP-8 and DIP-8 package.
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