TPS7A92 Low-Dropout (LDO) Voltage Regulator

TPS7A92 Low-Dropout (LDO) Voltage Regulator

Texas Instruments' TPS7A92 device is a low-noise (4.8 µVRMS), low-dropout (LDO) voltage regulator capable of sourcing 2 A with only 180 mV of dropout. The TPS7A92 output is adjustable with external resistors from 0.8 V to 5.2 V. The TPS7A92 wide input-voltage range supports operation as low as 1.4 V and up to 6.5 V.

With 1% output voltage accuracy (over line, load, and temperature) and soft-start capabilities to reduce in-rush current, the TPS7A92 is ideal for powering sensitive analog low-voltage devices [such as voltage-controlled oscillators (VCOs), analog-to-digital converters (ADCs), digital-to-analog converters (DACs), high-end processors, and field-programmable gate arrays (FPGAs)].

The TPS7A92 is designed to power noise-sensitive components such as those found in high-speed communication, video, medical, or test and measurement applications. The very low 4.6 µVRMS output noise and wideband PSRR (40 dB at 1 MHz) minimizes phase noise and clock jitter. These features maximize performance of clocking devices, ADCs, and DACs.

Features
  • 1.0% accuracy over line, load, and temperature
  • Low output noise: 4.6 µVRMS (10 Hz to 100 kHz)
  • Low dropout: 180 mV (typ) at 2 A
  • High power-supply ripple rejection (PSRR):
    • 60 dB at DC
    • 40 dB at 100 kHz
    • 40 dB at 1 MHz
  • Fast transient response
  • Wide input voltage range: 1.4 V to 6.5 V
  • Wide output voltage range: 0.8 V to 5.2 V
  • Adjustable start-up in-rush control with selectable soft-start charging current
  • Open-drain power-good (PG) output
  • θJC = 3.2°C/W
  • Stable with a 22 µF or larger ceramic output capacitor
  • 2.5 mm x 2.5 mm, 10-pin WSON package
Applications
  • High-speed analog circuits:
    • VCO, ADC, DAC, LVDS
  • Imaging: CMOS sensors, video ASICs
  • Test and measurement
  • Instrumentation, medical, and audio
  • Digital loads: SerDes, FPGA, DSP

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