The device has been designed to deliver high performance. The wide input voltage capability from 4V to 15V makes it suitable for dual-cell Li-Ion applications, as well as fixed 5V and 12V intermediate bus systems and synchronous rectification delivers efficiencies as high as 96%. The LTC3600’s design allows dynamic adjustment of output voltage from 0V to VIN-0.5V, offering virtually rail-to-rail performance. The device’s ability to provide zero output enables it to power down individual rails in the system as needed. Its on-chip trimmed reference achieves accuracy of ±1%.
In addition output regulation and transient response are independent of output voltage. Output voltage tracking or soft start is easily programmed via the ISET pin for applications that require power sequencing. The LTC3600’s wide VIN & VOUT capability, tight line and load regulation, high efficiency, low external parts count and parallel capability make it suitable for modern multirail systems.
The LTC3600’s combination of a 3mm x 3mm DFN or a thermally enhanced MSOP-12 package and its 200kHz to 4MHz switching capability enable use of tiny, low cost capacitors and inductors and, as a result, is able to offer a very compact solution footprint for multirail applications. Additional features include a power good voltage monitor, external synchronization capability and thermal protection.
The LTC3600EDD is available in a 3mm x 3mm DFN-12, and the LTC3600EMSE is offered in a 12-lead, thermally enhanced MSOP package.