LM3407 - 用于高功率 LED 的 350 mA、恒流输出浮动降压开关转换器

LM3407是TI德州仪器公司的一款LED照明-照明产品，LM3407是用于高功率 LED 的 350 mA、恒流输出浮动降压开关转换器，本站介绍了LM3407的封装应用图解、特点和优点、功能等，并给出了与LM3407相关的TI元器件型号供参考。

LM3407 - 用于高功率 LED 的 350 mA、恒流输出浮动降压开关转换器 - LED照明-照明 - LED驱动器 - 德州仪器

产品描述

The LM3407 is a constant current output floating buck switching converter designed to provide constant current to high power LEDs. The device is ideal for automotive, industrial and general lighting applications. The LM3407 has an integrated power N-MOSFET that makes the application solution compact and simple to implement. An external 1% thick-film resistor allows the converter output voltage to adjust as needed to deliver constant current within 10% accuracy to a serially connected LED string of varying number and type. Converter switching frequency is adjustable from 300 kHz to 1 MHz. The LM3407 features a dimming input to enable LED brightness control by Pulse Width Modulation (PWM). Additionally, a separate enable pin allows for low power shutdown. An exposed pad MSOP-8 PowerPAD package provides excellent heat dissipation and thermal performance. Input UVLO and output open-circuit protection ensure a robust LED driver solution.

产品特性

Input operating range 4.5V to 30V
Output voltage range: 0.1VIN to 0.9VIN
Accurate constant current output
Independent device enable (CMOS compatible) and PWM dimming control
Converter switching frequency adjustable from 300 kHz to 1 MHz
No external control loop compensation required
Supports ceramic and low ESR output capacitors
Input Under Voltage Lock Out (UVLO)
Thermal shutdown protection
MSOP-8 PowerPAD Package

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