LT3508

The LT^® 3508 is a dual current mode PWM step-down DC/DC converter with internal power switches capable of erating two 1.4A outputs. The wide input voltage range of 3.7V to 36V makes the LT3508 suitable for regulating power from a e variety of sources, including automo-tive batteries, 24V industrial supplies and unregulated wall adapters. Both rters are synchronized to a single os-cillator programmable up to 2.5MHz and run with opposite phases, reducing input ripple current. Its high operating frequency allows the use of small, low cost inductors and ceramic capacitors, ting in low, predictable output ripple. Each regulator has independent tracking and soft-start circuits and generates a power good signal when its output is in regulation, easing power supply sequencing and interfacing with microcontrollers and DSPs.

Cycle-by-cycle current limit, frequency foldback and thermal shutdown provide protection against shorted outputs, and soft-start eliminates input current surge during startup. The low current (<2A) shutdown mode enables easypower nt in battery-powered systems.