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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

Evaluation Module

Texas Instruments TPS7A84EVM-753 LDO Voltage Regulator EVM

Designed for a typical configuration to evaluate the operation and performance of the TPS7A84.

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Block Diagram

Block Diagram - Texas Instruments TPS7A84 LDO Voltage Regulator
Publicerad: 2016-03-23 | Uppdaterad: 2022-03-11