LM3407是TI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，本页介绍了LM3407的产品说明、应用、特性等，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 - TI公司（Texas Instruments，德州仪器）
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.
- 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
