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LM2577-SIMPLE SWITCHER? 升压电压稳压器
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TI产品 - LM2577介绍
LM2577 - SIMPLE SWITCHER? 升压电压稳压器

LM2577是TI公司的一款转换器(集成开关)产品,LM2577是SIMPLE SWITCHER? 升压电压稳压器,本页介绍了LM2577的产品说明、应用、特性等,并给出了与LM2577相关的TI元器件型号供参考。

LM2577 - SIMPLE SWITCHER? 升压电压稳压器 - 转换器(集成开关) - DC/DC开关稳压器 - TI公司(Texas Instruments,德州仪器)

产品描述

The LM1577/LM2577 are monolithic integrated circuits that provide all of the power and control functions for step-up (boost), flyback, and forward converter switching regulators. The device is available in three different output voltage versions: 12V, 15V, and adjustable.

Requiring a minimum number of external components, these regulators are cost effective, and simple to use. Listed in this data sheet are a family of standard inductors and flyback transformers designed to work with these switching regulators.

Included on the chip is a 3.0A NPN switch and its associated protection circuitry, consisting of current and thermal limiting, and undervoltage lockout. Other features include a 52 kHz fixed-frequency oscillator that requires no external components, a soft start mode to reduce in-rush current during start-up, and current mode control for improved rejection of input voltage and output load transients.

产品特性

  • Requires Few External Components
  • NPN Output Switches 3.0A, can Stand off 65V
  • Wide Input Voltage Range: 3.5V to 40V
  • Current-mode Operation for Improved Transient Response, Line Regulation, and Current Limit
  • 52 kHz Internal Oscillator
  • Soft-start Function Reduces In-rush Current During Start-up
  • Output Switch Protected by Current Limit, Under-voltage Lockout, and Thermal Shutdown

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