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.