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Product details

Parameters

Output options Adjustable Output, Dual Output Iout (Max) (A) 0.5 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) 48 Dropout voltage (Vdo) (Typ) (mV) 75 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
  • Low Output Noise: 3.8 µVRMS (10 Hz–100 kHz)
  • Low Dropout: 100 mVMAX at 0.5 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 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 (PGx) Outputs
  • Stable with a 10 µF or Larger Ceramic Output Capacitor
  • 4-mm × 4-mm, 20-Pin WQFN Package
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Description

The TPS7A87 is a dual, low-noise (3.8 µVRMS), low-dropout (LDO) voltage regulator capable of sourcing 500 mA per channel with only 100 mV of maximum dropout.

The TPS7A87 provides the flexibility of two independent LDOs and approximately 30% 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 TPS7A87 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 TPS7A87 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), complementary metal oxide semiconductor (CMOS) sensors, and video application-specific integrated circuits (ASICs)].

The TPS7A87 is designed to power noise-sensitive components such as those found in instrumentation, medical, video, professional audio, test and measurement, and high-speed communication 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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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
TPS7A90 ACTIVE 500-mA, low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator with high-accuracy 500-mA low noise (4.7 uVrms) LDO in a small package (2.5 mm x 2.5mm)
Similar but not functionally equivalent to the compared device:
NEW TLV751 ACTIVE 500-mA, low-IQ, high-PSRR, dual-channel low-dropout (LDO) voltage regulator 500-mA dual LDO with lower Iq in a smaller package

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 TPS7A87 Dual, 500-mA, Low-Noise (3.8 μVRMS), LDO Voltage Regulator datasheet (Rev. A) Jul. 12, 2016
Application notes High-Performance CMOS Image Sensor Power Supply in Industrial Camera and Vision Aug. 05, 2019
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
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 BOARDS Download
document-generic User guide
29
Description
The TPS7A8701EVM-852 evaluation module is designed for a typical configuration to evaluate the operation and performance of the TPS7A87, dual 500-mA 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: 100 mV at 500 mA
  • 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 MODELS Download
SBVM627.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SBVM628.ZIP (90 KB) - PSpice Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

REFERENCE DESIGNS Download
Isolated, Transformerless, Bipolar Supply for 24-Bit ADCs Reference Design
TIDA-01434 — This isolated, 3.65-mm thin reference design enables highly-integrated, bipolar input and high-performance solutions with a 24-bit delta-sigma analog-to-digital converter (ADC). Modern analog input modules need high performance in different aspects such as higher channel density at the same room (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
QFN (RTJ) 20 View options

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