TPS7A89

ACTIVE

2-A, low-noise, high-accuracy, dual-channel adjustable ultra-low-dropout voltage regulator

Product details

Output options Adjustable Output Iout (max) (A) 2 Vin (max) (V) 6.5 Vin (min) (V) 1.4 Vout (max) (V) 5.2 Vout (min) (V) 0.8 Noise (µVrms) 3.8 Iq (typ) (mA) 2.1 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 at 100 KHz (dB) 35 Dropout voltage (Vdo) (typ) (mV) 260 Operating temperature range (°C) -40 to 125
Output options Adjustable Output Iout (max) (A) 2 Vin (max) (V) 6.5 Vin (min) (V) 1.4 Vout (max) (V) 5.2 Vout (min) (V) 0.8 Noise (µVrms) 3.8 Iq (typ) (mA) 2.1 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 at 100 KHz (dB) 35 Dropout voltage (Vdo) (typ) (mV) 260 Operating temperature range (°C) -40 to 125
WQFN (RTJ) 20 16 mm² 4 x 4
  • Two Independent LDO Channels
  • 4-mm × 4-mm, 20-Pin WQFN Package
  • Low Output Noise: 3.8 µVRMS (10 Hz to 100 kHz)
  • Low Dropout: 180 mV (typ) at 2 A
  • Wide Input Voltage Range: 1.4 V to 6.5 V
  • Wide Output Voltage Range: 0.8 V to 5.2 V
  • High Power-Supply Rejection Ratio (PSRR):
    • 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 (PGx) Outputs
  • Stable with a 10 µF or Larger Ceramic Output Capacitor
  • Two Independent LDO Channels
  • 4-mm × 4-mm, 20-Pin WQFN Package
  • Low Output Noise: 3.8 µVRMS (10 Hz to 100 kHz)
  • Low Dropout: 180 mV (typ) at 2 A
  • Wide Input Voltage Range: 1.4 V to 6.5 V
  • Wide Output Voltage Range: 0.8 V to 5.2 V
  • High Power-Supply Rejection Ratio (PSRR):
    • 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 (PGx) Outputs
  • Stable with a 10 µF or Larger Ceramic Output Capacitor

The TPS7A89 is a dual, low-noise (3.8 µVRMS), low-dropout (LDO) voltage regulator capable of sourcing 2 A per channel with only 400 mV of maximum dropout.

The TPS7A89 provides the flexibility of two independent LDOs and approximately 60% smaller solution size than two single-channel LDOs. Each output is adjustable with external resistors from 0.8 V to 5.2 V. The wide input-voltage range of the TPS7A89 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 TPS7A89 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 TPS7A89 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 3.8-µVRMS output noise and wideband PSRR (40 dB at 1 MHz) minimizes phase noise and clock jitter. These features maximize the performance of clocking devices, ADCs, and DACs.

The TPS7A89 is a dual, low-noise (3.8 µVRMS), low-dropout (LDO) voltage regulator capable of sourcing 2 A per channel with only 400 mV of maximum dropout.

The TPS7A89 provides the flexibility of two independent LDOs and approximately 60% smaller solution size than two single-channel LDOs. Each output is adjustable with external resistors from 0.8 V to 5.2 V. The wide input-voltage range of the TPS7A89 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 TPS7A89 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 TPS7A89 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 3.8-µVRMS output noise and wideband PSRR (40 dB at 1 MHz) minimizes phase noise and clock jitter. These features maximize the performance of clocking devices, ADCs, and DACs.

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* Data sheet TPS7A89 Small, Dual, 2-A, Low-Noise (3.8 μVRMS), LDO Voltage Regulator datasheet (Rev. A) PDF | HTML 15 Jul 2016
White paper Parallel LDO Architecture Design Using Ballast Resistors PDF | HTML 14 Dec 2022
White paper Comprehensive Analysis and Universal Equations for Parallel LDO's Using Ballast PDF | HTML 13 Dec 2022
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 21 Mar 2018

Design & development

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Evaluation board

TPS7A8901EVM-853 — TPS7A89 Small Dual 2-A Low-Noise (3.8 μVRMS) LDO Voltage Regulator Evaluation Module

The TPS7A8901EVM-853 evaluation module is designed for a typical configuration to evaluate the operation and performance of the TPS7A89, dual 2-A low dropout voltage regulator. The EVM circuit board is configured to be a reference design for engineering applications requiring current to a dynamic (...)
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Simulation model

TPS7A89 PSpice Transient Model

SBVM626.ZIP (91 KB) - PSpice Model
Simulation model

TPS7A89 Unencrypted PSpice Transient Model

SBVM629.ZIP (3 KB) - PSpice Model
Package Pins Download
WQFN (RTJ) 20 View options

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