Description

The TPS7A8300 is a low-noise (6 VRMs), low-dropout voltage regulator (LDO) capable of sourcing a 2-A load with only 125 mV of maximum dropout.

The TPS7A8300 output voltages are fully user-adjustable (up to 3.95 V) using a printed circuit board (PCB) layout without the need of external resistors thus reducing overall component count. For higher output voltage applications, the device achieves output voltages up to 5 V with the use of external resistors. The device supports very low input voltages (down to 1.1 V) with the use of an additional BIAS rail.

With very high accuracy (1% over line, load, and temperature),remote sensing,and soft-start capabilities to reduce inrush current, the TPS7A8300 is ideal for powering high-current, low-voltage devices such as high-end micro processors and field-programmable gate arrays (FPGAs).

The TPS7A8300 is designed to power-up noise-sensitive components in high-speed communication applications. The very low-noise, 6-VRms device output and high broad-band width PSRR (40 dB at1 MHz) minimizes phase noise and clock jitter in high-frequency signals. These features maximize performance of clocking devices, analog-to-digital converters (ADCs)，and digital-to-analog converters (DACs).

For applications where positive and negative low-noise rails are required, consider TI's TPS7A33 family of negative high-voltage, ultralow-noise linear regulators.

Features

Ultra low Dropout: 125 mV Maximum at 2 A

Output Voltage Noise: 6 pVRMs 

Power-Supply Ripple Rejection:- 40 dB at 1 MHZ

Input Voltage Range:

Without BIAS: 1.4 V to 6.5 V

With BIAS: 1.1 V to 6.5 V

Two Output Voltage Modes:

ANY-OUTTM Version (User-ProgrammableOutput via PCB Layout):

- No External Resistor Required- Output Voltage Range: 0.8 V to 3.95 VAdjustable Version:

- Output Voltage Range: 0.8 V to 5.0 V

1.0% Accuracy Over Line, Load, and Temperature

Stable with a 22-uF Output Ceramic Capacitor

Programmable Soft-Start Output

Power-Good (PG) Output

Available Packages:

- 5-mm x 5-mm VQFN-20

- 3.5-mm x 3.5-mm VQFN-20

Applications

RF, IF Components: VCO, ADC, DAC, LVDS

Wireless Infrastructure: SerDes, FPGA DSPTM

Test and Measurement

Instrumentation, Medical, and Audio

TPS7A8300 Datasheet Download