LD39050xx Datasheet | STMicroelectronics

500 m A low quiescent current low noise voltage regulator .. Features - - - Input voltage from 1.5 to 5.5 V Ultra low dropout voltage (200 m V typ. at 500 m A load) Very low quiescent current (20 µA typ. at no load, 100 µA typ. at 500 m A load, 1 µA max in off mode) Very low noise without bypass capacitor Output voltage tolerance: ± 2.0 % @ 25 °C 500 m A guaranteed output current Wide range of output voltages available on request: 0.8 V to 4.5 V with 100 m V step and ADJ from 0.8 V Logic-controlled electronic shutdown patible with ceramic capacitor COUT = 1 µF Internal current and thermal limit Package DFN6 (3 x 3 mm) Temperature range: -40 °C to 125 °C roll off at 10 k Hz. An Enable logic control function puts the LD39050 in shut-down mode allowing a total current consumption lower than 1 µA. The device also includes short-circuit constant current limiting and thermal protection. Typical applications are mobile phones, personal digital assistants (PDAs), cordless phones and similar battery-powered systems. DFN6 (3 x 3 mm) - - - - - - - - - Description The LD39050 provides 500 m A maximum current from an input voltage ranging from 1.5 V to 5.5 V with a typical dropout voltage of 200 m V. Stability is provided using ceramic capacitors. The ultra low drop-voltage, low quiescent current and low noise Features make it suitable for low power battery-powered applications. Power supply rejection is 65 d B at low frequencies and starts to Table 1. Device summary Part numbers LD39050XX LD39050XX10 LD39050XX12 LD39050XX25 LD39050XX33 March 2009 Order codes LD39050PUR LD39050PU10R LD39050PU12R LD39050PU25R LD39050PU33R Rev 1 Output voltages ADJ from 0.8 V 1.0 V 1.2 V 2.5 V 3.3 V 1/24 .st. 24 Contents Contents .. Diagrams - - - - - - - - - - 3 Pin configuration - - - - - - - . ....