TPS79018

The TPS79018 low-dropout (LDO) voltage regulators offers the benefits of low-dropout voltage, ultralow-power operation, low-output noise, and miniaturized packaging. These regulators TPS79018 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 VRMS of output voltage noise using 0.01 F bypass and 10 F output capacitors. Offered in a 5-terminal small outline integrated-circuit SOT-23 package, the TPS79018 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 The usual PNP pass transistor has been replaced by a PMOS pass element.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 to the load current. The quiescent current of TPS79018 is ultralow (17 A typically) and is stable over the entire range of output load current (0 mA to 50 mA). Intended for use in portable systems such as laptops and cellular phones, the ultralow-dropout voltage feature and ultralowpower operation of TPS79018 result in a significant increase in system battery operating life.