Texas Instruments TPS7A84 LDO Voltage Regulator

Texas Instruments TPS7A84 LDO Voltage Regulator is a low-noise, low-dropout linear regulator (LDO) capable of sourcing 3A with only 180mV of maximum dropout. The device output voltage is pin-programmable from 0.8V to 3.95V and adjustable from 0.8V to 5.0V using an external resistor divider. The combination of low-noise (4.4µVRMS), high-PSRR, and high output current capability makes the TPS7A84 ideal to power noise-sensitive components. Those applications are found in high-speed communications, video, medical, or test and measurement applications. The high performance of the TPS7A84 limits power-supply-generated phase noise and clock jitter. This makes this device ideal for powering high-performance serializer and deserializer (SerDes), analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and RF components. Specifically, RF amplifiers benefit from the high-performance and 5.0V output capability of the device.

FEATURES

180mV (max) at 3A Low dropout

1% (max) Accuracy over the line, load, and temperature

Output voltage noise:

4.4µVRMS at 0.8V Output

7.7µVRMS at 5.0V Output

Input voltage range:

1.4V to 6.5V Without BIAS

1.1V to 6.5V With BIAS

ANY-OUT Operation:

0.8V to 3.95V Output voltage range

Adjustable Operation:

0.8V to 5.0V Output voltage range

Power-supply ripple rejection 40dB at 500kHz

Excellent load transient response

Adjustable soft-start in-rush control

Open-drain Power-Good (PG) output

Stable with a 47µF or larger ceramic output capacitor

3.5mm × 3.5mm, 20-Pin VQFN

APPLICATIONS

Digital loads: SerDes, FPGAs, and DSPs

Instrumentation, medical, and audio

High-speed analog circuits

VCO, ADC, DAC, and LVDS

Imaging: CMOS sensors and video ASICs

Test and measurement