LX1910

www.DataSheet4U.com LX1910 TM ® Step-Down Regulator P RODUCTION D ATA S HEET KEY FEATURES DESCRIPTION The LX1910 PWM buck regulator achieves very high efficiencies 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 a fixed frequency of 1MHz (typ), the transconductance error amplifier has 12µA of drive with an output voltage swing rail to rail. Compensation is external for maximum user flexibility. The LX1910 does not require a minimum load current for stable operation. There is no Under Voltage Lockout for the input voltage, operational range includes 4V to 6V. The regulator is capable of providing an output dc load current of 850mA. The SHDN pin places the device in a sleep-mode drawing less than 1µA of quiescent current. The LX1910 comes in space-saving 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 batteryoperated devices ƒ ƒ ƒ ƒ ƒ ƒ ƒ Internal Reference 1.17V ±2% Accuracy (Line and Temperature) 4V to 6.0V Input Range Adj. Output From 1.17V to VIN Output Current (IDC >850mA) Quiescent Current < 300µA 1MHz Operation Frequency MSOP 8-Pin APPLICATIONS/BENEFITS WWW . Microsemi . C OM ƒ ƒ Portable Micro...