LP8340

LP8340 www.ti.com SNVS221D – FEBRUARY 2003 – REVISED APRIL 2013 LP8340 Low Dropout, Low IQ, 1.0A CMOS Linear Regulator Check for Samples: LP8340 FEATURES 1 2 ±1.5% Typical VOUT Tolerance 420mV Typical Dropout @ 1.0A (VO = 5V) Wide Operating Range 2.7V to 10V Internal 1.0A PMOS Output Transistor 19µA Typical Quiescent Current Thermal Overload Limiting Foldback Current Limiting Zener Trimmed Bandgap Reference Space Saving WSON package Temperature Range – LP8340C 0°C to 125°C – LP8340I −40°C to 125°C APPLICATIONS Hard Disk Drives Notebook Computers Battery Powered Electronics Portable Instrumentation DESCRIPTION The LP8340 low-dropout CMOS linear regulator is available in 5V, 3.3V, 2.5V, 1.8V and adjustable output versions. Packaged in the 6ld WSON package and 3ld PFM. The LP8340 can deliver up to 1.0A output current. Typical dropout voltage is 420mV at 1.0A for the 5.0V version, 540mV at 1.0A for the 3.3V version, 670mV at 1.0A for the 2.5V version and 680mV at 800mA for the 1.8V version. The LP8340 includes a zener trimmed bandgap voltage reference, foldback current limiting and thermal overload limiting. The LP8340 features a PMOS output transistor which unlike PNP type low dropout regulators requires no base drive current. This allows the device ground current to remain less than 50µA over operating temperature, supply voltage and irrespective of the load current. Typical Applications VIN 1.0µF Ceramic VIN VOUT VOUT Sense (LLP only) VOUT...