LM3405 - 用于为 LED 供电的 1.6MHz 1A 恒流降压稳压器

LM3405是TI德州仪器公司的一款LED照明-照明产品，LM3405是用于为 LED 供电的 1.6MHz 1A 恒流降压稳压器，本站介绍了LM3405的封装应用图解、特点和优点、功能等，并给出了与LM3405相关的TI元器件型号供参考。

LM3405 - 用于为 LED 供电的 1.6MHz 1A 恒流降压稳压器 - LED照明-照明 - LED驱动器 - 德州仪器

产品描述

Integrated with a 1A power switch, the LM3405 is a current-mode control switching buck regulator designed to provide a simple, high efficiency solution for driving high power LEDs. With a 0.205V reference voltage feedback control to minimize power dissipation, an external resistor sets the current as needed for driving various types of LEDs. Switching frequency is internally set to 1.6MHz, allowing small surface mount inductors and capacitors to be used. The LM3405 utilizes current-mode control and internal compensation offering ease of use and predictable, high performance regulation over a wide range of operating conditions. Additional features include user accessible EN/DIM pin for enabling and PWM dimming of LEDs, thermal shutdown, cycle-by-cycle current limit and over-current protection.

产品特性

VIN Operating Range of 3V to 15V
Thin SOT-6 Package
1.6MHz Switching Frequency
300m? NMOS Switch
40nA Shutdown Current at VIN = 5V
EN/DIM Input for Enabling and PWM Dimming of LEDs
Internally Compensated Current-mode Control
Cycle-by-cycle Current Limit
Input Voltage UVLO
Over-current Protection
Thermal Shutdown

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