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LM2833 - 产品图解：
LM2833-1.5MHz/3MHz 3.0A 降压 DC-DC 开关稳压器
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TI产品 - LM2833介绍

LM2833 - 1.5MHz/3MHz 3.0A 降压 DC-DC 开关稳压器

LM2833是TI德州仪器公司的一款转换器（集成开关）产品，LM2833是1.5MHz/3MHz 3.0A 降压 DC-DC 开关稳压器，本站介绍了LM2833的封装应用图解、特点和优点、功能等，并给出了与LM2833相关的TI元器件型号供参考。

LM2833 - 1.5MHz/3MHz 3.0A 降压 DC-DC 开关稳压器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The LM2833 regulator is a monolithic, high frequency, PWM step-down DC/DC converter available in a 10-pin WSON or MSOP-PowerPAD package. It contains all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components, the LM2833 is easy to use. The ability to drive 3.0A loads with an internal 56 m? PMOS switch using state-of-the-art 0.5µm BiCMOS technology results in the best power density available. The world-class control circuitry allows on-times as low as 30ns, thus supporting exceptionally high frequency conversion over the entire 3V to 5.5V input operating range down to the minimum output voltage of 0.6V. Switching frequency is internally set to 1.5MHz or 3.0MHz, allowing the use of extremely small surface mount inductors and capacitors. Even though the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low stand-by current of 300nA. The LM2833 utilizes peak current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, cycle-by-cycle current limit, frequency foldback, thermal shutdown, and output over-voltage protection.

产品特性

  • Input Voltage Range of 3.0V to 5.5V
  • Output Voltage Range of 0.6V to 4.5V
  • Tiny MSOP-PowerPAD 10 or WSON-10 Package
  • 3.0A Steady-State Output Current
  • High Switching Frequencies
    • 1.5MHz (LM2833X)
    • 3.0MHz (LM2833Z)
  • Enable Pin
  • 56m? PMOS Switch
  • 0.6V, 2% Internal Voltage Reference Over Line and Temperature
  • Internal Soft-Start
  • Internally Compensated Peak Current-Mode Control
  • Cycle-by-Cycle Current Limit and Thermal Shutdown
  • Frequency Foldback Protection
  • Input Voltage UVLO (Under-Voltage Lockout)
  • Output Over-Voltage Protection

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