Texas Instruments TPS7A88 Low-Noise Low-Dropout Voltage Regulator

Texas Instruments TPS7A88 Dual Low-Noise Low-Dropout Voltage Regulator capable of sourcing 1A per channel with only 200mV of maximum dropout. The TPS7A88 provides the flexibility of two independent LDOs and an approximately 50% smaller solution size than two single-channel LDOs. Each output is adjustable with external resistors from 0.8V to 5.0V. The TPS7A88 wide input-voltage range supports operation as low as 1.4V and up to 6.5V. This device has a 1% output voltage accuracy (over the line, load, and temperature) and soft-start capabilities to reduce in-rush current. This makes the TPS7A88 ideal for powering sensitive analog low-voltage devices. The TPS7A88 is designed to power up noise-sensitive components such as those found in high-speed communication, video, medical, or test, and measurement applications.

Features

  • Two independent LDO channels
  • <3.8µVRMS (10Hz-100kHz) Low output noise
  • 200mV (Max) at 1A Low dropout
  • 1.4V to 6.5V Wide input voltage range
  • 0.8V to 5.0V Wide output voltage range
  • High power-supply ripple rejection
    • 75dB at DC
    • 40dB at 100kHz
    • 40dB at 1MHz
  • 1.0% Accuracy over the line, load, and temperature
  • Excellent load transient response
  • Adjustable start-up in-rush control
  • Selectable soft-start charging current
  • Independent open-drain Power-Good (PG) outputs
  • Stable with a 10µF or larger ceramic output capacitor
  • 4mm×4mm, 20-Pin WQFN 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™

Typical Application Circuit

Application Circuit Diagram - Texas Instruments TPS7A88 Low-Noise Low-Dropout Voltage Regulator
Publicerad: 2016-02-10 | Uppdaterad: 2023-01-06