Startseite Energiemanagement Linear- und Low-Dropout-Regler (LDO)

TPS7A91

AKTIV

Rauscharmer, einstellbarer 1-A-Spannungsregler mit hohem PSRR-Wert und extrem niedriger Dropout-Span

Eine neuere Version dieses Produkts ist verfügbar

Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung
TLV759P AKTIV Hochpräziser, einstellbarer Spannungsregler mit extrem geringem Dropout und 1 A, mit niedrigem IQ un 1A, adjustable output LDO with lower IQ for cost-sensitive applications.
TPS746 AKTIV Hochpräziser, einstellbarer Spannungsregler mit extrem niedrigem Dropout und Power Good und Aktivier 1A, adjustable output LDO with lower IQ and power good for cost-sensitive applications.

Produktdetails

Output options Adjustable 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 Rating Catalog Noise (µVrms) 4.7 PSRR at 100 KHz (dB) 48 Iq (typ) (mA) 2.1 Thermal resistance θJA (°C/W) 57 Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 130 Operating temperature range (°C) -40 to 125
Output options Adjustable 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 Rating Catalog Noise (µVrms) 4.7 PSRR at 100 KHz (dB) 48 Iq (typ) (mA) 2.1 Thermal resistance θJA (°C/W) 57 Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 130 Operating temperature range (°C) -40 to 125
WSON (DSK) 10 6.25 mm² 2.5 x 2.5
  • 1.0% Accuracy Over Line, Load, and Temperature
  • Low Output Noise: 4.7 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 5.2 V
  • High Power-Supply Ripple Rejection (PSRR):
    • 70 dB at DC
    • 40 dB at 100 kHz
    • 40 dB at 1 MHz
  • Fast Transient Response
  • Adjustable Start-Up In-Rush Control with Selectable Soft-Start Charging Current
  • Open-Drain Power-Good (PG) Output
  • 2.5-mm × 2.5-mm, 10-Pin SON Package
  • 1.0% Accuracy Over Line, Load, and Temperature
  • Low Output Noise: 4.7 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 5.2 V
  • High Power-Supply Ripple Rejection (PSRR):
    • 70 dB at DC
    • 40 dB at 100 kHz
    • 40 dB at 1 MHz
  • Fast Transient Response
  • Adjustable Start-Up In-Rush Control with Selectable Soft-Start Charging Current
  • Open-Drain Power-Good (PG) Output
  • 2.5-mm × 2.5-mm, 10-Pin SON Package

The TPS7A91 is a low-noise (4.7 µVRMS), low-dropout (LDO) voltage regulator capable of sourcing 1 A with only 200 mV of maximum dropout.

The TPS7A91 output is adjustable with external resistors from 0.8 V to 5.2 V. The TPS7A91 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 TPS7A91 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 TPS7A91 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 4.7-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 TPS7A91 is a low-noise (4.7 µVRMS), low-dropout (LDO) voltage regulator capable of sourcing 1 A with only 200 mV of maximum dropout.

The TPS7A91 output is adjustable with external resistors from 0.8 V to 5.2 V. The TPS7A91 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 TPS7A91 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 TPS7A91 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 4.7-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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Technische Dokumentation

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Typ Titel Datum
* Data sheet TPS7A91 1-A, High-Accuracy, Low-Noise LDO Voltage Regulator datasheet PDF | HTML 13 Dez 2016
White paper Demystifying LDO Turn-On (startup) Time PDF | HTML 05 Okt 2024
White paper Parallel LDO Architecture Design Using Ballast Resistors PDF | HTML 14 Dez 2022
White paper Comprehensive Analysis and Universal Equations for Parallel LDO's Using Ballast PDF | HTML 13 Dez 2022
Technical article LDO basics: noise – how a feed-forward capacitor improves system performance PDF | HTML 25 Jul 2017
Technical article LDO basics: noise – how a noise-reduction pin improves system performance PDF | HTML 14 Jun 2017
EVM User's guide TPS7A91EVM-831 Evaluation Module User's Guide 29 Nov 2016

Design und Entwicklung

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Evaluierungsplatine

TPS7A91EVM-831 — TPS7A91 1A rauscharmer Low-Vin-Low-Dropout (LDO)-Regler für Analog – Evaluierungsmodul

The TPS7A91EVM-831 evaluation module is designed for a typical configuration to evaluate the operation and performance of the TPS7A91, 1A high-accuracy, low dropout voltage regulator. The EVM circuit board is configured to be a reference design for engineering applications requiring current to a (...)
Benutzerhandbuch: PDF
Simulationsmodell

TPS7A91 PSpice Transient Model

SBVM662.ZIP (92 KB) - PSpice Model
Simulationsmodell

TPS7A91 Unencrypted PSpice Transient Model

SBVM661.ZIP (2 KB) - PSpice Model
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
WSON (DSK) 10 Ultra Librarian

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