The LTC3407-3 is a dual, constant frequency, synchronous step down DC/DC converter. Intended for low power applications, it operates from 3.3V to 5.5V input voltage range and has a constant 2.25MHz switching frequency, allowing the use of tiny, low cost capacitors and inductors with a profile ≤1.0mm. Internal synchronous 0.35Ω, 1.2A power switches provide high efficiency without the need for external Schottky diodes. A user selectable mode input is provided to allow the user to trade-off noise ripple for low power efficiency. Burst Mode® operation provides high efficiency at light loads, while Pulse Skip Mode provides low noise ripple at light loads. To further maximize battery life, the P-channel MOSFETs are turned on continuously in dropout (100% duty cycle), and both channels draw a total quiescent current of only 40µA. In shutdown, the device draws <1µA. Iout Fsw Features LTC3407 2x 600mA 1.5MHz LTC3407-2 2x 800mA 2.25MHz LTC3407-3 2x 800mA 2.25MHz Fixed 1.8V/3.3V LTC3407-4 2x 800mA 2.25MHz Reduced POR Delay LTC3407A 2x 600mA 1.5MHz Low Ripple Burst Mode LTC3407A-2 2x 800mA 2.25MHz Low Ripple Burst Mode Applications * PDAs/Palmtop PCs * Digital Cameras * Cellular Phones * Portable Media Players * PC Cards * Wireless and DSL Modems * Very Low Quiescent Current: Only 40µA * 1.8V at 800mA/3.3V at 800mA * High Efficiency: Up to 95% * 2.25MHz Constant Frequency Operation * High Switch Current: 1.2A on Each Channel * No Schottky Diodes Required * Low RDS(ON) Internal Switches: 0.35Ω * VIN: 3.3V to 5.5V https://elecena.pl/product/380165/dual-synchronous-1-8v-0-8a-and-3-3v-0-8a-2-25mhz-step-down-dc-dc-regulator 2007-04-27 https://elecena.pl/product/380165/dual-synchronous-1-8v-0-8a-and-3-3v-0-8a-2-25mhz-step-down-dc-dc-regulator 2014-06-30 https://elecena.pl/product/380165/dual-synchronous-1-8v-0-8a-and-3-3v-0-8a-2-25mhz-step-down-dc-dc-regulator 2025-01-21