LD39300PT18-R STMicroelectronics

LD39300 Ultra low drop BICMOS voltage regulator Feature summary 3A Guaranteed output current Ultra low dropout voltage (200mV typ. 3A load, 40mV typ. 600mA load) Very low quiescent current (1.2mA typ. 3A load, 1A max 25C in off mode) Logic-controlled electronic shutdown DPAK PPAK Current and thermal internal limit 1.5% Output voltage tolerance 25C Fixed and ADJ output voltages: 1.22V, 1.8V, 2.5V, 3.3V, ADJ. (*see order code) Temperature range: -40 to 125C Fast dynamic response to line and load Description changes The LD39300 is a fast ultra low drop linear Stable with ceramic capacitor (see paragraph regulator which operates from 2.5V to 6V input 7.1, 7.2, 7.3) supply. Available in PPAK and DPAK A wide range of output options are available. The low drop voltage, low noise, and ultra low Typical application quiescent current make it suitable for low voltage Microprocessor power supply microprocessor and memory applications. The device is developed on a BiCMOS process which DSPs power supply allows low quiescent current operation Post regulators for switchin suppliers independently of output load current. High efficiency linear regulator Order codes Part numbers Output voltage DPAK PPAK LD39300DT12-R 1.22V LD39300DT18-R LD39300PT18-R 1.8V LD39300DT25-R LD39300PT25-R 2.5V LD39300DT33-R LD39300PT33-R 3.3V LD39300PT-R ADJ From 1.22 to 5.0V January 2007 Rev. 1 1/17 www.st.com 17LD39300 Contents 1 Diagram . 3 2 Pin configuration . 4 3 Typical application circuits . 5 4 Maximum ratings 7 5 Electrical characteristics . 8 6 Typical performance characteristics 9 7 Application notes 11 7.1 External capacitors 11 7.2 Input capacitor . 11 7.3 Output capacitor 11 7.4 Thermal note 11 7.5 Inhibit input operation 11 8 Package mechanical data 12 9 Revision history . 16 2/17