Ultra-Low Low-Dropout Regulators

Ultra-Low Low-Dropout Regulators

Texas Instruments’ TPS7A10 ultra-low low-dropout (LDO) regulators are ultra-small, have low quiescent current, and can source 300mA with an outstanding AC performance (load and line transient responses). These devices have an ultra-low input range of 0.75V to 3.3V, and output range of 0.5V to 3.0V with a very high accuracy of 1.5% overload, line and temperature. This performance is suitable for powering the lower core voltages of the modern MCUs and analog sensors. The main power path is through VIN and can be connected to a power supply as low as 70mV above the output voltage. They support very low input voltages with the use of an additional VBIAS rail that is used to power the internal circuitry of the LDO. Both VIN and VBIAS consume a very low quiescent current of 1.6µA and 6µA, respectively. The low IQ and ultra-low dropout features help in increasing the efficiency of the solution in power-sensitive applications.