Synchronous step-down switcher delivers 2A
1 min read
Linear Technology has announced the LT8620, a 2A, 65V input capable synchronous step down switching regulator.
The device delivers up to 95% efficiency and Burst Mode operation keeps quiescent current under 2.5µA in no-load standby conditions.
The regulator's 3.4 to 65V input voltage range makes it suitable for automotive (single and dual battery) and industrial applications. Its internal high efficiency switches can deliver up to 2A of continuous output current to voltages as low as 0.97V.
The LT8620 maintains a minimum dropout voltage of 250mV at 1A under all conditions, enabling it to excel in scenarios such as automotive cold-crank.
The device's fast minimum on-time of only 30ns enables 2MHz constant frequency switching from a 16V input to a 1.5V output, enabling designers to optimise efficiency while avoiding critical noise sensitive frequency bands.
The LT8620 integrates internal top and bottom high efficiency power switches with the necessary boost diode, oscillator, control and logic circuitry integrated into a single die.
Low ripple Burst Mode operation maintains high efficiency at low output currents while keeping output ripple below 10mVPK-PK.
Special design techniques and a new high speed process enable high efficiency over a wide input voltage range.
Other features include internal compensation, a power good flag, output soft-start/tracking and thermal protection.
