TPS76433

TPS76425, TPS76427, TPS76428, TPS76430, TPS76433 LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS D 150-mA Low Noise, Low-Dropout Regulator D Output Voltage: 2.5 V, 2.7 V, 2.8 V, 3.0 V, 3.3 V D Output Noise Typically 50 µV D Quiescent Current Typically 85 µA D Dropout Voltage, Typically 300 mV at 150 mA D Thermal Protection D Over Current Limitation D Less Than 2-µA Quiescent Current in Shutdown Mode D –40°C to 125°C Operating Junction Temperature Range D 5-Pin SOT-23 (DBV) Package SLVS180B – MARCH 1999 – REVISED MAY 2001 DBV PACKAGE (TOP VIEW) IN 1 5 OUT GND 2 EN 3 4 BYPASS description The TPS764xx family of low-dropout (LDO) voltage regulators offers the benefits of a low noise, low-dropout voltage, low-power operation, and miniaturized package. Additionally, they feature low quiescent current when compared to conventional LDO regulators. Offered in 5-terminal small outline integrated-circuit SOT-23 package, the TPS764xx series devices are ideal for low-noise applications, cost-sensitive designs and applications where board space is at a premium. A combination of new circuit design and process innovation has enabled the usual pnp pass transistor to be replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low—typically 300 mV at 150 mA of load current (TPS76433)—and is directly proportional to the load current. Since the PMOS pass element is a voltage-driven device, the quiescent curr...