36V with 60V Transient Protection, Dual Tracking 3.5A(IOUT), 2.25MHz Step-Down DC/DC Converter

To optimize efficiency and component size, both internal converters have a programmable maximum current limit and are synchronized to each other via the device's internal oscillator or an external clock input. The converters are run 180° out of phase to further reduce voltage ripple and external component size. Multiple regulators can be synchronized via an external clock output to provide additional voltage rails. Conversely, the outputs can also be combined for high current applications, enabling the LT3692 to deliver up to 7A of continuous output current. The combination of the device's 5mm x 5mm QFN-32 package and high switching frequency, which keeps external capacitors and inductor small, provides a very compact, thermally efficient footprint. The LT3692's main switcher utilizes high efficiency 3.8A, 300mVCESAT switches, with the necessary oscillator, control and logic circuitry integrated into a single die.

Special design techniques enable high efficiency over a wide input voltage range while its current-mode topology enables fast transient response and excellent loop stability. The LT3692 also offers a frequency divider on one channel which enables it run at frequencies 1/2, 1/4 or 1/8 of the other channel’s frequency to enable high step-down ratios while minimizing external component size. Enhanced short circuit protection and die temperature monitor offer additional levels of protection. Other features include thermal shutdown and independent power good flags.