The TPS72012DRVT is a 1.2V fixed output dual rail low-dropout (LDO) Linear Regulator provides outstanding AC performance (PSRR, load and line transient response), while consuming a very low quiescent current of 38 µA. The VBIAS rail that powers the control circuit of the LDO draws very low current and can be connected to any power supply that is equal to or greater than 1.4V above the output voltage. The main power path is through VIN, which can be a lower voltage than VBIAS, it can be as low as VOUT + VDO, increasing the efficiency of the solution in many power-sensitive applications. The device supports a novel feature in which the output of the LDO regulates under light loads when the IN pin is left floating. The light-load drive current is sourced from VBIAS under this condition. This feature is particularly useful in power-saving applications where the DC to DC converter connected to the IN pin is disabled but the LDO is still required to regulate the voltage to a light load.
● Excellent load transient response - ±15mV for ILOAD = 0mA to 350mA in 1µs
● Excellent line transient response
● 48µVRMS Low noise (10Hz to 100kHz)
● 80dB VIN PSRR (10Hz to 10kHz)
● 70dB VBIAS PSRR (10Hz to 10kHz)
● 140µs Fast start-up time
● Built-in soft-start with monotonic VOUT rise and start-up current limited to 100mA + ILOAD
● Overcurrent and thermal protection
● Stable with 2.2µF output capacitor
● Green product and no Sb/Br
