Analog Devices Inc.

Category: Power Management ICs

The LTC3405A-1.5/LTC3405A-1.8 are high efficiency monolithic synchronous buck regulators using a constant frequency, current mode architecture. Supply current during operation is only 20µA and drops to <1µA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3405A-1.5/LTC3405A-1.8 ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems.Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors.The LTC3405A-1.5/LTC3405A-1.8 are specifically designed to work well with ceramic output capacitors, achieving very low output voltage ripple and a small PCB footprint.The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. The LTC3405A-1.5/LTC3405A-1.8 are available in a low profile (1mm) ThinSOT package.For adjustable output voltage, refer to the LTC3405A data sheet.Protected by U.S. Patents, including 6580258, 5481178.    VOUT Features   LTC3405 Adj. - LTC3405A Adj. Stable With All Ceramic Caps LTC3405A-1.375 1.375V Stable With All Ceramic Caps LTC3405A-1.5 1.5V Stable With All Ceramic Caps LTC3405A-1.8 1.8V Stable With All Ceramic Caps Applications Cellular Telephones Personal Information Appliances Wireless and DSL Modems Digital Still Cameras MP3 Players Portable Instruments

$5.59 - $6.47