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Product details

Parameters

Output options Adjustable Output, Dual 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 (uVrms) 3.8 Iq (Typ) (mA) 2.1 Thermal resistance θJA (°C/W) 33 Load capacitance (Min) (µF) 10 Rating Catalog Regulated outputs (#) 2 Features Enable, Foldback Overcurrent Protection, Power Good, Soft Start Accuracy (%) 1 PSRR @ 100 KHz (dB) 35 Dropout voltage (Vdo) (Typ) (mV) 260 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

WQFN (RTJ) 20 16 mm² 4 x 4 open-in-new Find other Linear regulators (LDO)

Features

  • 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
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Description

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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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet TPS7A89 Small, Dual, 2-A, Low-Noise (3.8 μVRMS), LDO Voltage Regulator datasheet (Rev. A) Jul. 15, 2016
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) Mar. 21, 2018
Technical articles LDO basics: noise – part 1 Jun. 14, 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
29
Description
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 (...)
Features
  • Low Dropout: 180 mV at 2 A
  • 1% (max) Accuracy Over Line, Load, and Temperature
  • Dual LDO
  • Adjustable Output Voltage Range: 0.8 V to 5.2 V
  • High Power-Supply Ripple Rejection: 40 dB at 100 kHz

Design tools & simulation

SIMULATION MODEL Download
SBVM626.ZIP (91 KB) - PSpice Model
SIMULATION MODEL Download
SBVM629.ZIP (3 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
QFN (RTJ) 20 View options

Ordering & quality

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  • MSL rating/Peak reflow
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  • Ongoing reliability monitoring

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