LM2577 - SIMPLE SWITCHER? 升压电压稳压器

LM2577是TI德州仪器公司的一款转换器（集成开关）产品，LM2577是SIMPLE SWITCHER? 升压电压稳压器，本站介绍了LM2577的封装应用图解、特点和优点、功能等，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 - 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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