With a quiescent current of less than 2.5µA in no-load standby conditions, the part is said to suit always-on systems. Accepting inputs ranging from 3V to 42V, the device is compatible with automotive applications, while internal 2A switches can deliver a continuous output up to 1.5A.
The LT8608 uses 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 peak to peak output ripple at less than 10mV. Linear’s design techniques, along with a new high speed process, are said to bring high efficiency over a wide input voltage range, while the LT8608’s current mode topology enables fast transient response and good loop stability. Other features include internal compensation, a ‘power good’ flag, output soft start/tracking and thermal protection.
The LT8608EMSE is supplied in a thermally enhanced MSOP10 package, with an industrial temperature version – the LT8608IMSE – guaranteed to operate at junction temperatures ranging from -40 to 125°C.