1 Features

• Low-Dropout 1-A Regulator with Enable

• Adjustable Output Voltage: 0.8 V to 6 V

• Wide-Bandwidth High PSRR:

– 80 dB at 1 kHz

– 60 dB at 100 kHz

– 54 dB at 1 MHz

• Low Noise: 23.5 μV RMS typical (100 Hz to

100 kHz)

• Stable with a 4.7-μF Capacitance

• Excellent Load and Line Transient Response

• 3% Overall Accuracy (Over Load, Line,

Temperature)

• Overcurrent and Overtemperature Protection

• Very Low Dropout: 170 mV Typical at 1 A

• Package: 3-mm × 3-mm SON-8

2 Applications

• Telecom Infrastructure

• Audio

• High-Speed I/F (PLL and VCO)

3 Description

The TPS7A8101 low-dropout linear regulator (LDO)

offers very good performance in noise and power- supply rejection ratio (PSRR) at the output. This LDO

uses an advanced BiCMOS process and a

PMOSFET pass device to achieve very low noise,

excellent transient response, and excellent PSRR performance.

The TPS7A8101 device is stable with a 4.7-μF

ceramic output capacitor, and uses a precision

voltage reference and feedback loop to achieve a

worst-case accuracy of 3% over all load, line,

process, and temperature variations.

This device is fully specified over the temperature

range of TJ = –40°C to 125°C and is offered in a 3-

mm × 3-mm, SON-8 package with a thermal pad.