TPS77050

TPS77001, TPS77012, TPS77015, TPS77018, TPS77025 TPS77027, TPS77028, TPS77030, TPS77033, TPS77050 ULTRALOW-POWER 50-mA LOW-DROPOUT LINEAR REGULATORS SLVS210D – JUNE 1999 – REVISED MAY 2001 D 50-mA Low-Dropout Regulator D Available in 1.2-V, 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V, 3.0-V, 3.3-V, and 5-V Fixed-Output and Adjustable Versions D Only 17 µA Quiescent Current at 50 mA D 1 µA Quiescent Current in Standby Mode D Dropout Voltage Typically 35 mV at 50 mA D Over Current Limitation D –40°C to 125°C Operating Junction Temperature Range D 5-Pin SOT-23 (DBV) Package description The TPS770xx family of low-dropout (LDO) voltage regulators offers the benefits of low dropout voltage, ultralow-power operation, and miniaturized packaging. These regulators feature low dropout voltages and ultralow quiescent current compared to conventional LDO regulators. Offered in a 5-terminal small outline integrated-circuit SOT-23 package, the TPS770xx series devices are ideal for micropower operations and where board space is at a premium. Ground Current – µ A DBV PACKAGE (TOP VIEW) IN 1 5 OUT GND 2 EN 3 4 NC/FB TPS77033 GROUND CURRENT vs FREE-AIR TEMPERATURE 22 VI = 4.3 V 21 CO = 4.7 µF 20 19 IO = 50 mA IO = 0 mA 18 17 A combination of new circuit design and process 16 innovation has enabled the usual PNP pass transistor to be replaced by a PMOS pass element. Because the PMOS pass element 15 –60 –40 –20 0 20 40 60 80 100 120 140 behaves as a low-value resistor, the dropout...