1.6MHz, 1A constant current, step-down regulator 'LM3405' for LED power supply
The LM3405 is a 1A constant current buck LED driver designed to provide a simple and highly efficient solution for driving high-power LEDs. It features a 0.205V reference voltage feedback control to minimize power consumption, allowing the current to be set with a single external resistor for driving various types of LEDs. The switching frequency is internally set to 1.6MHz, enabling the use of small surface-mount inductors and capacitors. With current mode control and internal compensation, it is user-friendly and achieves predictable, high-performance regulation across a wide range of operating conditions. This device has a maximum input voltage of 15V and can drive up to three high-brightness LEDs in series with a forward current of 1A, with the forward voltage of a single LED being approximately 3.7V. **Features** - VIN operating range: 3V to 15V - Drives up to five high-brightness LEDs in series at 1A - Thin SOT-6 package - Switching frequency: 1.6MHz - LED enable and PWM dimming via EN/DIM input - 300mΩ NMOS switch *For more details, please contact us.*
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basic information
【Other Features】 ■ Shutdown current of 40nA when VIN = 5V ■ Current mode control with internal compensation ■ Current limit per cycle ■ Input voltage UVLO ■ Overcurrent protection ■ Thermal shutdown *For more details, please contact us.
Applications/Examples of results
【Applications】 ■ LED driver ■ Constant current power supply ■ Industrial lighting ■ LED flashlight *For more details, please contact us.
Company information
Texas Instruments (Headquarters: Dallas, Texas, USA; Chairman, President, and CEO: Rich Templeton; Abbreviation: TI) supports customers in developing new electronic devices that make the world "more convenient, healthier, safer, environmentally friendly, and enjoyable," and works together to solve challenges. TI has manufacturing, design, and sales locations in over 30 countries worldwide and continues to pursue innovation. TI's analog ICs and embedded processing support everyday life from behind the scenes in a society overflowing with digital devices. The company is actively investing in products and technologies for markets that will become increasingly important in the future, such as the environment, energy, healthcare, medical devices, and security. Technical Inquiry Contact TI Japan Product Information Center 【http://www.tij.co.jp/pic/】
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