LX1910CDU数据手册Microchip中文资料规格书

描述 Description

Key Features: 2.7V to 6.0V Input Range PWM/PFM Operation For Light Load Efficiency Adj. Output From 1.17V to VIN Capable Of Supplying More Than 700mA Quiescent Current of 250µA 1MHz Operation Frequency 8-Pin MSOP Description: The LX1910 is a voltage mode PWM buck regulator operating at high frequencies capable of achieving high efficiency over a broad range of operating load conditions. The LX1910 implements a load-detection architecture and enters a power-saving PFM mode when driving small load currents ensuring optimal regulator efficiency over the entire output current range thus maximizing battery life. The PWM operating mode implements typical fixed frequency operation of 1MHz in order to minimize the size of external components. The transconductance error amplifier has 15uA of drive with an output voltage swing rail-to-rail, and compensation is external in order to maximize user flexibility in the selection of output inductance and capacitance. With a minimum duty cycle of 0%, the LX1910 does not require a minimum load current for stable operation. The input voltage range includes 2.7V to 6V and the regulator will provide up to 700mA of output current to the load. Asserting the SHDN pin places the device in a sleep-mode drawing less than 1µA of quiescent current. The LX1910 comes in the MSOP package allowing a complete application circuit to occupy a very small PCB area. These features make the LX1910 ideal for use in SmartPhones, PDAs, or other battery-operated devices.  ROHS