TPS71H33Q

TPS71H01Q, TPS71H33Q, TPS71H48Q, TPS71H50Q LOWĆDROPOUT VOLTAGE REGULATORS SLVS152B − NOVEMBER 1996 − REVISED AUGUST 2002 D Available in 5-V, 4.85-V, and 3.3-V Fixed-Output and Adjustable Versions D Very Low-Dropout Voltage . . . Maximum of GND/HEATSINK 32 mV at IO = 100 mA (TPS71H50) GND/HEATSINK D Very Low Quiescent Current − Independent GND of Load . . . 285 µA Typ NC D Extremely Low Sleep-State Current 0.5 µA Max D 2% Tolerance Over Specified Conditions For Fixed-Output Versions D Output Current Range of 0 mA to 500 mA EN IN IN NC GND/HEATSINK GND/HEATSINK D TSSOP Package Option Offers Reduced Component Height for Space-Critical Applications D Thermally Enhanced Surface-Mount Package D Power-Good (PG) Status Output PWP PACKAGE (TOP VIEW) 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 PWP PACKAGE (BOTTOM VIEW) GND/HEATSINK GND/HEATSINK NC NC PG SENSE†/FB‡ OUT OUT GND/HEATSINK GND/HEATSINK description Thermal The TPS71Hxx integrated circuits are a family of Pad micropower low-dropout (LDO) voltage regula- tors. An order of magnitude reduction in dropout voltage and quiescent current over conventional LDO performance is achieved by replacing the typical pnp pass transistor with a PMOS device. Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (maximum of 32 mV at an output current of NC − No internal connection † SENSE − Fixed voltage options only (TPS71H33, TPS71H48, and TPS71H50) ‡ FB − Adjustable versi...