TPS79018

TPS79015, TPS79018, TPS79025, TPS79028, TPS79030 ULTRALOW-POWER LOW-NOISE 50-mA LOW-DROPOUT LINEAR REGULATORS SLVS299B – SEPTEMBER 2000 – REVISED MAY 2001 D 50-mA Low-Dropout Regulator D Available in 1.5-V, 1.8-V, 2.5-V, 2.8-V, 3.0-V D Output Noise Typically 56 µVRMS (TPS79030) D Only 17 µA Quiescent Current at 50 mA D 1 µA Quiescent Current in Standby Mode D Dropout Voltage Typically 57 mV at 50 mA (TPS79030) D Over Current Limitation D –40°C to 125°C Operating Junction Temperature Range D 5-Pin SOT-23 (DBV) Package description The TPS790xx family of low-dropout (LDO) voltage regulators offers the benefits of low-dropout voltage, ultralow-power operation, low-output noise, and miniaturized packaging. These regulators feature low-dropout voltages and ultralow quiescent current compared to conventional LDO regulators. An internal resistor, in conjunction with an external bypass capacitor, creates a low-pass filter to reduce the noise. The TPS79030 exhibits only 56 µVRMS of output voltage noise using 0.01 µF bypass and 10 µF output capacitors. Offered in a 5-terminal small outline integrated-circuit SOT-23 package, the TPS790xx series devices are ideal for micropower operations, low output noise, and where board space is limited. The usual PNP pass transistor has been replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low, typically 57 mV at 50 mA of load current (TPS79030), and is directly proportional t...