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

LP2951-N

AKTIV

Low-Dropout-Spannungsregler, 100 mA, 30 V, mit Power-Good- und Aktivierungsfunktion

Jetzt bestellen
Datenblatt

LP2951-N

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Output options Adjustable Output, Fixed Output Iout (max) (A) 0.1 Vin (max) (V) 30 Vin (min) (V) 2.3 Vout (max) (V) 29 Vout (min) (V) 1.24 Fixed output options (V) 3, 3.3, 5 Noise (µVrms) 160 Iq (typ) (mA) 0.075 Thermal resistance θJA (°C/W) 43, 56, 118, 171 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2.5 PSRR at 100 KHz (dB) 51 Dropout voltage (Vdo) (typ) (mV) 380 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (max) (A) 0.1 Vin (max) (V) 30 Vin (min) (V) 2.3 Vout (max) (V) 29 Vout (min) (V) 1.24 Fixed output options (V) 3, 3.3, 5 Noise (µVrms) 160 Iq (typ) (mA) 0.075 Thermal resistance θJA (°C/W) 43, 56, 118, 171 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2.5 PSRR at 100 KHz (dB) 51 Dropout voltage (Vdo) (typ) (mV) 380 Operating temperature range (°C) -40 to 125
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9 WSON (NGT) 8 16 mm² 4 x 4
  • Input Voltage Range: 2.3 V to 30 V
  • 5-V, 3-V, and 3.3-V Output Voltage Versions Available
  • High Accuracy Output Voltage
  • Ensured 100-mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Extremely Tight Load and Line Regulation
  • Very Low Temperature Coefficient
  • Use as Regulator or Reference
  • Needs Minimum Capacitance for Stability
  • Current and Thermal Limiting
  • Stable With Low-ESR Output Capacitors (10 mΩ to 6 Ω)
  • LP2951-N Versions Only:
    • Error Flag Warns of Output Dropout
    • Logic-Controlled Electronic Shutdown
    • Output Programmable From 1.24 V to 29 V
  • Input Voltage Range: 2.3 V to 30 V
  • 5-V, 3-V, and 3.3-V Output Voltage Versions Available
  • High Accuracy Output Voltage
  • Ensured 100-mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Extremely Tight Load and Line Regulation
  • Very Low Temperature Coefficient
  • Use as Regulator or Reference
  • Needs Minimum Capacitance for Stability
  • Current and Thermal Limiting
  • Stable With Low-ESR Output Capacitors (10 mΩ to 6 Ω)
  • LP2951-N Versions Only:
    • Error Flag Warns of Output Dropout
    • Logic-Controlled Electronic Shutdown
    • Output Programmable From 1.24 V to 29 V

The LP2950-N and LP2951-N are micropower voltage regulators with very low quiescent current (75 µA typical) and very low dropout voltage (typical 40 mV at light loads and 380 mV at 100 mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the device increases only slightly in dropout, prolonging battery life.

Careful design of the LP2950-N/LP2951-N has minimized all contributions to the error budget. This includes a tight initial tolerance (0.5% typical), extremely good load and line regulation (0.05% typical) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.

One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5-V, 3-V, or 3.3-V output (depending on the version), or programmed from 1.24 V to 29 V with an external pair of resistors.

The LP2950-N is available in the surface-mount TO-252 package and in the popular 3-pin TO-92 package for pin-compatibility with older 5-V regulators. The 8-pin LP2951-N is available in plastic, ceramic dual-in-line, WSON, or metal can packages and offers additional system functions.

The LP2950-N and LP2951-N are micropower voltage regulators with very low quiescent current (75 µA typical) and very low dropout voltage (typical 40 mV at light loads and 380 mV at 100 mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the device increases only slightly in dropout, prolonging battery life.

Careful design of the LP2950-N/LP2951-N has minimized all contributions to the error budget. This includes a tight initial tolerance (0.5% typical), extremely good load and line regulation (0.05% typical) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.

One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5-V, 3-V, or 3.3-V output (depending on the version), or programmed from 1.24 V to 29 V with an external pair of resistors.

The LP2950-N is available in the surface-mount TO-252 package and in the popular 3-pin TO-92 package for pin-compatibility with older 5-V regulators. The 8-pin LP2951-N is available in plastic, ceramic dual-in-line, WSON, or metal can packages and offers additional system functions.
filter Andere Linear- und Low-Dropout-Regler (LDO) suchen
Herunterladen Video mit Transkript ansehen Video

Ähnliche Produkte, die für Sie interessant sein könnten

open-in-new Alternativen vergleichen
Drop-In-Ersatz mit gegenüber dem verglichenen Baustein verbesserter Funktionalität
LP2951 AKTIV Low-Dropout-Spannungsregler, 100 mA, 30 V, mit Power-Good- und Aktivierungsfunktion Pin-to-pin equivalent for cost-sensitive applications
Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung
TLV709 AKTIV Low-Dropout-Linearregler (LDO), 150 mA, 30 V, mit 3,2 μA Versorgungsstrom Improved IQ (0.003μA) and accuracy of (2%)
NEU TPS7B91 AKTIV Low-Dropout-Linearregler mit 150 mA 40 V 1,5 μA IQ Similar device with a wider Vin range up to 40V

Technische Dokumentation

star =Von TI ausgewählte Top-Empfehlungen für dieses Produkt
Keine Ergebnisse gefunden. Bitte geben Sie einen anderen Begriff ein und versuchen Sie es erneut.
Alle anzeigen 9
Typ Titel Datum
* Data sheet LP295x-N Series of Adjustable Micropower Voltage Regulators datasheet (Rev. Q) PDF | HTML 08 Dez 2017
EVM User's guide LP2951 EVM User's Guide (Rev. A) 05 Jan 2018
Application note AN-1061 Power Conversion in Line-Powered Equipment (Rev. B) 23 Apr 2013
More literature Die D/S LP2951 MDS Series of Adjustable Micropower Voltage Regs 20 Dez 2012
More literature Die D/S LP2951C MWC Series Of Adj Micropower Voltage Regulators 28 Sep 2012
Application note Low-Voltage Current Loop Transmitter 02 Aug 2007
Application note Battery Charging 21 Mär 2007
Application note Linear and Switching Voltage Regulator Fundamental Part 1 21 Mär 2007
White paper Versatility of the LM5030 PWM Push-Pull Controller 01 Dez 2003

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

LP2951EVM — LP2951 Feststehender/einstellbarer Micropower Low-Dropout (LDO)-Regler – Evaluierungsmodul

The LP2951 devices are bipolar low-dropout (LDO) voltage regulators that can accommodate a wide input supply-voltage range of up to 30 V with an output load up to 100 mA. The LP2951EVM allows for flexibility in design, allowing the user to add or remove input and output capacitors, as well as (...)
Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Simulationsmodell

LP2951 PSpice Transient Model (Rev. A)

SNVM037A.ZIP (23 KB) - PSpice Model
Herunterladen
Simulationsmodell

LP2951 Unencrypted PSpice Transient Model

SNVMAO3.ZIP (1 KB) - PSpice Model
Herunterladen
Simulationsmodell

LP2951_N_3P0 PSpice Transient Model

SNVMAI1.ZIP (86 KB) - PSpice Model
Herunterladen
Simulationsmodell

LP2951_N_3P0 Unencrypted PSpice Transient Model

SNVMAI0.ZIP (2 KB) - PSpice Model
Herunterladen
Simulationsmodell

LP2951_N_3P3 PSpice Transient Model

SNVMAI4.ZIP (87 KB) - PSpice Model
Herunterladen
Simulationsmodell

LP2951_N_3P3 Unencrypted PSpice Transient Model

SNVMAI5.ZIP (2 KB) - PSpice Model
Herunterladen
Simulationsmodell

LP2951_N_5P0 PSpice Transient Model

SNVMAI6.ZIP (80 KB) - PSpice Model
Herunterladen
Simulationsmodell

LP2951_N_5P0 Unencrypted PSpice Transient Model

SNVMAH9.ZIP (2 KB) - PSpice Model
Herunterladen
Referenzdesigns

TIDA-010015 — 94,5 % Wirkungsgrad, 500-W-AC-DC-Referenzdesign für Industrieanwendungen

This reference design is a compact, high efficiency, 24-V DC, 500-W reference design for industrial AC/DC power supplies. This design consists of a front-end, two-phase interleaved transition mode (TM) power factor correction (PFC) based on the UCC28064A. This minimizes the PFC inductor size and (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-010009 — Kompaktes, effizientes Hilfsstromversorgungs-Referenzdesign mit 24 V-Eingang für Servoantriebe

This reference design showcases a method to generate power supplies required in a servo or AC drive including the analog and digtal I/O interfaces, encoder supply, isolated transceivers and digital processing block. This design also implements protection against input reverse polarity, output (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-00777 — Aktiver Integrator für Rogowski-Spule Referenzdesign mit verbesserter Genauigkeit für Relais und Lei

This reference design shows an active integrator design that covers wide-input current range for Rogowski Coil with accuracy, linearity, stability and repeatability. The integrator uses a precision amplifier with very-low offset and temperature drift. Two configurations of the integrator are (...)
Design guide: PDF
Schaltplan: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
PDIP (P) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian
WSON (NGT) 8 Ultra Librarian
Es gelten die allgemeinen Geschäftsbedingungen von TI für Evaluierungsartikel.

Bestellen & Qualität

Beinhaltete Information:
  • RoHS
  • REACH
  • Bausteinkennzeichnung
  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
  • Werksstandort
  • Montagestandort

Empfohlene Produkte können Parameter, Evaluierungsmodule oder Referenzdesigns zu diesem TI-Produkt beinhalten.

Support und Schulungen

TI E2E™-Foren mit technischem Support von TI-Ingenieuren

Alle Forenthemen auf Englisch anzeigen

Inhalte werden ohne Gewähr von TI und der Community bereitgestellt. Sie stellen keine Spezifikationen von TI dar. Siehe Nutzungsbedingungen.

Bei Fragen zu den Themen Qualität, Gehäuse oder Bestellung von TI-Produkten siehe TI-Support. ​​​​​​​​​​​​​​

Videos