LM3557 - 用于白光 LED 应用的升压转换器

LM3557是TI德州仪器公司的一款背光产品，LM3557是用于白光 LED 应用的升压转换器，本站介绍了LM3557的封装应用图解、特点和优点、功能等，并给出了与LM3557相关的TI元器件型号供参考。

LM3557 - 用于白光 LED 应用的升压转换器 - 背光 - LED驱动器 - 德州仪器

产品描述

The LM3557 is a complete solution for white LED drive applications. With minimal external component count, no DC current leakage paths to ground, cycle-by-cycle current limit protection, and output over-voltage protection circuitry, the LM3557 offer superior performance and cost savings over standard DC/DC boost component implementations.

The LM3557 switches at a fixed-frequency of 1.25 MHz, which allows for the use of small external components. Also, the LM3557 has a wide input voltage range to take advantage of multi-cell input applications. With small external components, high fixed frequency operation, and wide input voltage range, the LM3557 is the most optimal choice for LED lighting applications.

产品特性

VIN Range: 2.7V–7.5V
Small External Components
1.25 MHz Constant-Switching Frequency
Output Over-Voltage Protection
Input Under-Voltage Protection
Cycle-By-Cycle Current Limit
TRUE SHUTDOWN: No DC current paths to ground during shutdown
Low Profile Package: <1 mm Height -8 Pin WSON
No External Compensation

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