SC195F Datasheet | SEMTECH

Features - - Input Voltage - 2.9V to 5.5V - - Output Voltage - 0.8V to 3.3V - - Output current capability - 500m A - - Efficiency up to 94% - - 15 Programmable output voltages - - Fast transient response - - Oscillator frequency - 3.5MHz - - 100% duty cycle capability - - Quiescent current - 4.8 m A typ - - Shutdown Current - 0.1µA typ - - Internal soft-start - - Over-voltage protection - - Current limit and short circuit protection - - Over-temperature protection - - Input under-voltage lockout - - Floating control pin protection - - MLPQ-UT8 1.5 x 1.5 x 0.6 (mm) package - - Pb free, halogen free, and Ro HS/WEEE pliant Applications - - Smart phones and cellular phones - - MP3/Personal media players - - Personal navigation devices - - Digital cameras - - Single Li-ion cell or 3 Ni MH/Ni Cd cell devices - - Devices with 3.3V or 5V internal power rails 3.5MHz, 500m A Synchronous Step Down DC-DC Regulator Description The SC195F is a high efficiency, 500m A step down regulator designed to operate with an input voltage range of 2.9V to 5.5 V. The input voltage range makes it ideal for battery operated applications with space limitations. The SC195F operates at a fixed 3.5MHz switching frequency in normal PWM (Pulse-Width Modulation) mode. The SC195F also includes fifteen programmable output voltage settings that can be selected using the four control pins, eliminating the need for external feedback resistors. The output voltage can be fixed to a single setting or dynamically switched between different levels. Pulling all four control pins low disables the output. The SC195F provides several protection features to safeguard the device under stressed conditions. These include short circuit protection, over-temperature protection, input under-voltage lockout, and soft-start to control in-rush current. These features , coupled with the small 1.5 x 1.5 x 0.6 (mm) package make the SC195F a versatile device ideal for step-down regulation in products needing high efficiency and a small PCB...