Brighter whites

News

Linear Technology has released the LT3486, a dual step-up DC/DC converter specifically designed to drive up to 16 white LEDs with constant current.

has released the LT3486, a dual step-up DC/DC converter specifically designed to drive up to 16 white LEDs (8 LEDs in series per channel) with constant current.

In addition true PWM dimming delivers constant current to the LEDs, keeping the emitted light at a constant colour. Dimming is controlled with the duty cycle of the PWM driver. This method allows for a wide 1000:1 dimming range.

The LT3486's current mode and fixed frequency operation is said to ensure uniform LED brightness, low noise and maximum battery life. Its two independent converters are capable of driving asymmetric LED strings (up to 8 in a series per converter) from an input voltage of 2.5V to 24V, delivering efficiencies up to 85%.

Linear says the LT3486’s 5mm x 3mm DFN package and small externals provide a compact footprint for space-constrained handheld applications. Its 2.5V to 24V input voltage range enables it to operate in applications from Li-Ion powered handheld devices to automotive backlighting applications.

Register now to continue reading

Thanks for visiting The Engineer. You’ve now reached your monthly limit of news stories. Register for free to unlock unlimited access to all of our news coverage, as well as premium content including opinion, in-depth features and special reports.  

Benefits of registering

  • In-depth insights and coverage of key emerging trends

  • Unrestricted access to special reports throughout the year

  • Daily technology news delivered straight to your inbox

Register
Or continue by

Signing in with your registered email address