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TPS7A87

ACTIVE

500-mA, low-noise, high-PSRR, dual-channel adjustable ultra-low-dropout voltage regulator

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Data sheet

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Same functionality with different pin-out 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-µVrms) LDO in a small package (2.5 mm x 2.5 mm)
Similar functionality to the compared device
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.

TPS7A87

ACTIVE
Data sheet Order now

Product details

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 Rating Catalog Noise (µVrms) 3.8 PSRR at 100 KHz (dB) 48 Iq (typ) (mA) 2.1 Thermal resistance θJA (°C/W) 33 Load capacitance (min) (µF) 10 Regulated outputs (#) 2 Features Enable, Foldback Overcurrent protection, Power good, Soft start Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 75 Operating temperature range (°C) -40 to 125
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 Rating Catalog Noise (µVrms) 3.8 PSRR at 100 KHz (dB) 48 Iq (typ) (mA) 2.1 Thermal resistance θJA (°C/W) 33 Load capacitance (min) (µF) 10 Regulated outputs (#) 2 Features Enable, Foldback Overcurrent protection, Power good, Soft start Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 75 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: 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
  • 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

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.

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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Type Title Date
* Data sheet TPS7A87 Dual, 500-mA, Low-Noise (3.8 μVRMS), LDO Voltage Regulator datasheet (Rev. A) PDF | HTML 12 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
Application note High-Performance CMOS Image Sensor Power Supply in Industrial Camera and Vision (Rev. A) 30 Jul 2021

Design & development

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Evaluation board

TPS7A8701EVM-852 — TPS7A87 Dual 500mA Low-Noise (3.8 μVRMS) LDO Voltage Regulator Evaluation Module

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 (...)
User guide: PDF
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Simulation model

TPS7A87 PSpice Transient Model

SBVM628.ZIP (90 KB) - PSpice Model
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Simulation model

TPS7A87 Unencrypted PSpice Transient Model

SBVM627.ZIP (3 KB) - PSpice Model
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Reference designs

TIDA-01434 — Isolated, Transformerless, Bipolar Supply for 24-Bit ADCs Reference Design

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 (...)
Design guide: PDF
Schematic: PDF
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WQFN (RTJ) 20 Ultra Librarian
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