Low VIN 5A DC/DC converter
07 August 2012
Linear’s LT3959 is a versatile DC/DC converter for boost, SEPIC and inverting power supply applications.
This device operates over an input voltage range of 2.5V to 40V, has an onboard 6A/40V power switch and achieves efficiencies up to 96%, making it suitable for industrial, automotive, medical and telecom applications.
The LT3959 can generate either positive or negative regulated output voltage with its two internal voltage feedback error amplifiers and reference voltages. One set is for positive output voltages and the other is for negative output voltages, both off a single feedback pin.
With a programmable fixed or synchronisable operating frequency from 100kHz to 1MHz, designers can choose a range of inductors and capacitors to optimise size, performance and cost. The LT3959’s current-mode control results in stable operation over a range of supply and output voltages. The device supports designs using only ceramic capacitors, enabling a smaller solution size.
Additional features include programmable soft-start, adjustable input under-voltage lockout and a power good pin.
The LT3959 operates from a -40°C to 125°C temperature range and is available in a 5mm x 6mm QFN-36 package.
Contact Details and Archive...