Product details

Output options Adjustable Output, Dual Output Iout (Max) (A) 1 Vin (Max) (V) 6.5 Vin (Min) (V) 1.4 Vout (Max) (V) 5.2 Vout (Min) (V) 0.8 Noise (uVrms) 3.8 Iq (Typ) (mA) 2 Thermal resistance θJA (°C/W) 33 Rating Catalog Load capacitance (Min) (µF) 10 Regulated outputs (#) 2 Features Enable, Foldback Overcurrent Protection, Power Good, Soft Start Accuracy (%) 1 PSRR @ 100 KHz (dB) 48 Dropout voltage (Vdo) (Typ) (mV) 130 Operating temperature range (C) -40 to 125
Output options Adjustable Output, Dual Output Iout (Max) (A) 1 Vin (Max) (V) 6.5 Vin (Min) (V) 1.4 Vout (Max) (V) 5.2 Vout (Min) (V) 0.8 Noise (uVrms) 3.8 Iq (Typ) (mA) 2 Thermal resistance θJA (°C/W) 33 Rating Catalog Load capacitance (Min) (µF) 10 Regulated outputs (#) 2 Features Enable, Foldback Overcurrent Protection, Power Good, Soft Start Accuracy (%) 1 PSRR @ 100 KHz (dB) 48 Dropout voltage (Vdo) (Typ) (mV) 130 Operating temperature range (C) -40 to 125
WQFN (RTJ) 20 16 mm² 4 x 4
  • Two Independent LDO Channels
  • Low Output Noise: < 3.8 µVRMS (10 Hz–100 kHz)
  • Low Dropout: 200 mV (Max) at 1 A
  • Wide Input Voltage Range: 1.4 V to 6.5 V
  • Wide Output Voltage Range: 0.8 V to 5.0 V
  • High Power-Supply Ripple Rejection:
    • 75 dB at DC
    • 40 dB at 100 kHz
    • 40 dB at 1 MHz
  • 1.0% Accuracy Over 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 10-µF or Larger Ceramic Output Capacitor
  • 4-mm × 4-mm, 20-Pin WQFN Package
  • Two Independent LDO Channels
  • Low Output Noise: < 3.8 µVRMS (10 Hz–100 kHz)
  • Low Dropout: 200 mV (Max) at 1 A
  • Wide Input Voltage Range: 1.4 V to 6.5 V
  • Wide Output Voltage Range: 0.8 V to 5.0 V
  • High Power-Supply Ripple Rejection:
    • 75 dB at DC
    • 40 dB at 100 kHz
    • 40 dB at 1 MHz
  • 1.0% Accuracy Over 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 10-µF or Larger Ceramic Output Capacitor
  • 4-mm × 4-mm, 20-Pin WQFN Package

The TPS7A88 is a dual, low-noise (3.8 µVRMS), low-dropout (LDO) voltage regulator capable of sourcing 1 A per channel with only 200 mV of maximum dropout.

The TPS7A88 provides the flexibility of two independent LDOs and approximately 50% smaller solution size than two single-channel LDOs. Each output is adjustable with external resistors from 0.8 V to 5.0 V. The TPS7A88 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 TPS7A88 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 TPS7A88 is designed to power up noise-sensitive components such as those found in high-speed communication, video, medical, or test and measurement applications. The very low 4-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.

The TPS7A88 is a dual, low-noise (3.8 µVRMS), low-dropout (LDO) voltage regulator capable of sourcing 1 A per channel with only 200 mV of maximum dropout.

The TPS7A88 provides the flexibility of two independent LDOs and approximately 50% smaller solution size than two single-channel LDOs. Each output is adjustable with external resistors from 0.8 V to 5.0 V. The TPS7A88 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 TPS7A88 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 TPS7A88 is designed to power up noise-sensitive components such as those found in high-speed communication, video, medical, or test and measurement applications. The very low 4-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.

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Technical documentation

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Type Title Date
* Data sheet TPS7A88 Dual, 1-A, Low-Noise (3.8-µVRMS), LDO Voltage Regulator datasheet (Rev. A) 30 Nov 2015
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 21 Mar 2018
White paper Minimum Power Specifications for High-Performance ADC Power-Supply Designs 31 Mar 2016
User guide TPS7A88 Evaluation Module User's Guide 09 Dec 2015

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Simulation model

TPS7A88 PSpice Transient Model

SBVM553.ZIP (88 KB) - PSpice Model
Simulation model

TPS7A88 Unencrypted PSpice Transient Model

SBVM554.ZIP (3 KB) - PSpice Model
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