High-current, high-accuracy, low-noise LDO voltage regulator ideal choice for demanding applications

The Texas Instruments TPS7A85A is a low-noise (4.4µVRMS), LDO capable of sourcing 4A with only 240mV of maximum dropout. The device output voltage is pin-programmable from 0.8V to 3.95V and adjustable from 0.8V to 5.1V using an external resistor divider. The combination of low-noise, high- PSRR, and high output current capability makes the device ideal to power noise-sensitive components such as those found in high-speed communications, video, medical, or test and measurement applications. The high performance of the device limits power-supply-generated phase noise and clock jitter, making this device ideal for powering high-performance SerDes, ADCs, DACs, and RF components. Specifically, RF amplifiers benefit from the high-performance and 5.1V output capability of the device. For digital loads (such as ASICs, FPGAs, and DSPs) requiring LILO voltage operation, the exceptional accuracy (0.75% over load and temperature), remote sensing, excellent transient performance, and soft-start capabilities of the device ensure optimal system performance. The versatility of the device makes it a component of choice for many demanding applications.