The LT3508EFE#PBF is a Dual Monolithic 1.4A Step-down Switching Regulator with an internal power switches capable of generating two 1.4A outputs. Both converters are synchronized to a single oscillator 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, resulting 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 fold back and thermal shutdown provide protection against shorted outputs and soft-start eliminates input current surge during start-up. The low current (<2µA) shutdown mode enables easy power management in battery-powered systems.
● Two 1.4A output switching regulators with internal power switches
● Adjustable 250kHz to 2.5MHz switching frequency
● Synchronizable over the full frequency range
● Anti-phase switching reduces ripple
● Uses small inductors and ceramic capacitors
● Accurate programmable under-voltage lockout
● Independent tracking, soft-start and power good circuits ease supply sequencing
● Output adjustable down to 800mV
