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TPS720 Datasheet RF Low-Dropout Linear Regulator

Manufacturer: Texas Instruments

General Description

The TPS720 family of dual rail, low-dropout linear regulators (LDOs) offers outstanding ac performance (PSRR, load and line transient response), while consuming a very low quiescent current of 38 μA.

The VBIAS rail that powers the control circuit of the LDO draws very low current (on the order of the quiescent current of the LDO) and can be connected to any power supply that is equal to or greater than 1.4 V above the output voltage.

The main power path is through VIN, which can be a lower voltage than VBIAS;

Overview

Product Folder Order Now Technical Documents Tools & Software Support & Community Reference Design TPS720 SBVS100E – JUNE 2008 – REVISED SEPTEMBER 2015 TPS720 350 mA, Ultra-Low VIN, RF Low-Dropout Linear Regulator With.

Key Features

  • 1 350-mA High-Performance LDO.
  • Low Quiescent Current: 38 μA.
  • Excellent Load Transient Response: ±15 mV for ILOAD = 0 mA to 350 mA in 1 μs.
  • Excellent Line Transient Response: ΔVOUT = ±2 mV for ΔVBIAS = ±600 mV in 1 μs ΔVOUT = ±200 μV for ΔVIN = ±400 mV in 1 μs.
  • Low Noise: 48 μVRMS (10 Hz to 100 kHz).
  • 80 dB VIN PSRR (10 Hz to 10 kHz).
  • 70 dB VBIAS PSRR (10 Hz to 10 kHz).
  • Fast Start-Up Time: 140 μs.
  • Built-In Soft-Start.