LTC3676EUJ#PBF Datasheet/PDFThe LTC3676EUJ#PBF complex is a very specialized low noise, low quiescent current and small size synchronous switching regulator which has a guaranteed efficiency of up to 93%. It completely integrates the power MOSFETs needed to construct a DC-DC converter, and can directly drive the inductor, allowing designs with a minimum of extra components. The LTC3676EUJ#PBF is great for designs that require a minimum of power, size, and/or complexity. It is a multi-phase, synchronous buck regulator with an internal buck controller, two power MOSFETs, two current sensing resistors, and a fault detection circuit.
The device is an advanced power distribution network for portable applications such as mobile phones and PDAs. It has a maximum switching frequency of 500kHz, a minimum output voltage of 1.25V and a maximum of 5.1V. The LTC3676EUJ#PBF features output current up to 6 A and input voltage range of 2.25V to 5.5 V.
The input voltage to the LTC3676EUJ#PBF is regulated by the internal regulator which takes a regulated input voltage range of 2.25V to 5.5V and maintains it within ±2% over the temperature range of -40 to +85°C. The device basically works as a DC-DC buck converter, with the input voltage being converted to the desired output voltage. The device is also protected from short-circuits and over-voltage conditions with the help of over-current protection and thermal shutdown.
The integrated synchronous buck controller in the LTC3676EUJ#PBF provides a variety of operating modes. One of those modes is pulse skipping, which helps to reduce noise. Another mode is frequency dithering, which helps to reduce the chances of sub-harmonic oscillations. Both modes are useful for reducing noise and ripple further.
The LTC3676EUJ#PBF is an ideal device for applications that require a low quiescent current and low noise switching regulator. It is a multiphase, synchronous buck regulator with integrated DC-DC conversion, boost conversion and ideal diode control, making it suitable for today’s high-performance power solutions. Its high-efficiency, low-noise and size features make it an ideal choice for a variety of low-power applications, such as mobile phones, PDAs, and the like. The LTC3676EUJ#PBF is a great choice for designs that require a minimal amount of power, space, and components.