LD2980 Ultra low drop voltage regulators compatible with low ESR output capacitors Datasheet - production data Description The low drop voltage and the ultra low quiescent current make them suitable for low noise, low power applications and in battery powered systems. The quiescent current in sleep mode is less than 1 A when the INHIBIT pin is pulled low. A shutdown logic control function is available on pin n 3 (TTL compatible). This means that when SOT23-5L the device is used as local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. The LD2980 is designed to work with low ESR ceramic capacitors. Typical applications are cellular Features phone, laptop computer, personal digital assistant (PDA), personal stereo, camcorder and camera. Stable with low ESR ceramic capacitors Ultra low dropout voltage (0.12 V typ. at 50 mA load, 7 mV typ. at 1 mA load) Very low quiescent current (80 A typ. at no load in on mode max 1 A in off mode) Guaranteed output current up to 50 mA Logic-controlled electronic shutdown Output voltage of 1.8 3.0 3.3 5.0 V Internal current and thermal limit 0.5% Tolerance output voltage available (A version) Output low noise voltage 160 VRMS Temperature range: -40 to 125 C Smallest package SOT23-5L Fast dynamic response to line and load changes Table 1. Device summary Part numbers AB version C version Output voltage LD2980CM18TR 1.8 V LD2980ABM30TR 3.0 V LD2980ABM33TR LD2980CM33TR 3.3 V LD2980ABM50TR LD2980CM50TR 5.0 V November 2013 DocID6280 Rev 18 1/22 This is information on a product in full production. www.st.comContents LD2980 Contents 1 Diagram . 3 2 Pin configuration 4 3 Maximum ratings 5 4 Typical application 6 5 Electrical characteristics . 7 6 Typical performance characteristics . 11 7 Application notes 15 7.1 External capacitors 15 7.2 Input capacitor . 15 7.3 Output capacitor 15 7.4 Important . 15 7.5 Inhibit input operation 15 7.6 Reverse current 16 8 Package mechanical data 17 9 Packaging mechanical data 19 10 Revision history . 21 2/22 DocID6280 Rev 18