Voltage regulator provides flexibility of two LDOs in small solution size

The TPS7A89 from Texas Instruments is a dual, low-noise (3.8µVRMS), low-dropout (LDO) voltage regulator capable of sourcing 2A per channel with only 400mV of maximum dropout. The device provides the flexibility of two independent LDOs and approximately 60% smaller solution size than two single-channel LDOs. Each output is adjustable with external resistors from 0. V to 5. V. The wide input-voltage range of the device supports operation as low as 1. V and up to 6. V. With 1% output voltage accuracy (over line, load, and temperature) and soft-start capabilities to reduce in-rush current, it is ideal for powering sensitive analog low-voltage devices [such as voltage-controlled oscillators, analog-to-digital converters, digital-to-analog converters, high-end processors, and field-programmable gate arrays. It is designed to power noise-sensitive components such as those found in high-speed communication, video, medical, or test and measurement applications. The very low 3.8µVRMS output noise and wideband PSRR (40dB at 1 MHz) minimises phase noise and clock jitter. These features maximise the performance of clocking devices, ADCs and DACs.