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

LP2985-N

AKTIV

Low-Dropout-Spannungsregler, 150 mA, 16 V, mit Aktivierung

Jetzt bestellen
Datenblatt

Eine neuere Version dieses Produkts ist verfügbar

open-in-new Alternativen vergleichen
Drop-In-Ersatz mit verbesserter Funktionalität im Gegensatz zum verglichenen Baustein
LP2985 AKTIV Low-Dropout-Spannungsregler, 150 mA, 16 V, mit Aktivierung Pin-to-pin equivalent for cost-sensitive applications
TPS709 AKTIV 150-mA, 30 V, Ultra-Low-IQ, Low-Abfallspannungsregler mit Rückstromschutz und Freigabe Wider voltage range
Gleiche Funktionalität, gleiche Pinbelegung wie verglichener Baustein
TPS7A24 AKTIV Low-Dropout-Spannungsregler (LDO), 200 mA, 18 V, extrem niedriger Ruhestrom, mit Aktivierung Pin-to-pin option with ultra-low-IQ (2 uA)

LP2985-N

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Output options Fixed Output Iout (max) (A) 0.15 Vin (max) (V) 16 Vin (min) (V) 2.2 Vout (max) (V) 6.1 Vout (min) (V) 1.8 Fixed output options (V) 2.5, 2.6, 2.7, 2.8, 2.9, 3, 3.1, 3.2, 3.3, 3.5, 3.6, 3.8, 4, 4.5, 5, 5.7, 6.1 Noise (µVrms) 30 Iq (typ) (mA) 0.065 Thermal resistance θJA (°C/W) 169 Rating Catalog Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable Accuracy (%) 2 PSRR at 100 KHz (dB) 30 Dropout voltage (Vdo) (typ) (mV) 280 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 0.15 Vin (max) (V) 16 Vin (min) (V) 2.2 Vout (max) (V) 6.1 Vout (min) (V) 1.8 Fixed output options (V) 2.5, 2.6, 2.7, 2.8, 2.9, 3, 3.1, 3.2, 3.3, 3.5, 3.6, 3.8, 4, 4.5, 5, 5.7, 6.1 Noise (µVrms) 30 Iq (typ) (mA) 0.065 Thermal resistance θJA (°C/W) 169 Rating Catalog Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable Accuracy (%) 2 PSRR at 100 KHz (dB) 30 Dropout voltage (Vdo) (typ) (mV) 280 Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • V IN range: 2.5 V to 16 V
  • V OUT range (new chip):
    • 1.2 V to 5.0 V (fixed, 100-mV steps)
  • V OUT range (legacy chip): 2.5 V to 6.1 V
  • V OUT accuracy:
    • ±1% for A-grade legacy chip
    • ±1.5% for standard-grade legacy chip
    • ±0.5% for new chip only
  • Output accuracy over load, and temperature:
    • ±1% for new chip
  • Output current: Up to 150 mA
  • Low I Q (new chip): 71 µA at I LOAD = 0 mA
  • Low I Q (new chip): 750 µA at I LOAD = 150 mA
  • Shutdown current:
    • 0.05 µA (typ) for legacy chip
    • 1.12 µA (typ) for new chip
  • Low noise: 30 µV RMS with 10-nF bypass capacitor
  • Output current limiting and thermal protection
  • Stable with 2.2-µF ceramic capacitors
  • High PSRR: 70 dB at 1 kHz, 40 dB at 1 MHz
  • Operating junction temperature: –40°C to +125°C
  • Package: 5-pin SOT-23 (DBV) ultra-low dropout voltage
  • V IN range: 2.5 V to 16 V
  • V OUT range (new chip):
    • 1.2 V to 5.0 V (fixed, 100-mV steps)
  • V OUT range (legacy chip): 2.5 V to 6.1 V
  • V OUT accuracy:
    • ±1% for A-grade legacy chip
    • ±1.5% for standard-grade legacy chip
    • ±0.5% for new chip only
  • Output accuracy over load, and temperature:
    • ±1% for new chip
  • Output current: Up to 150 mA
  • Low I Q (new chip): 71 µA at I LOAD = 0 mA
  • Low I Q (new chip): 750 µA at I LOAD = 150 mA
  • Shutdown current:
    • 0.05 µA (typ) for legacy chip
    • 1.12 µA (typ) for new chip
  • Low noise: 30 µV RMS with 10-nF bypass capacitor
  • Output current limiting and thermal protection
  • Stable with 2.2-µF ceramic capacitors
  • High PSRR: 70 dB at 1 kHz, 40 dB at 1 MHz
  • Operating junction temperature: –40°C to +125°C
  • Package: 5-pin SOT-23 (DBV) ultra-low dropout voltage

The LP2985-N is a fixed-output, wide-input, low-noise, low-dropout voltage regulator supporting an input voltage range from 2.5 V to 16 V and up to 150 mA of load current. The LP2985-N supports an output range of 1.2 V to 5.0 V (new chip) and 2.5 V to 6.1 V (legacy chip).

Additionally, the LP2985-N (new chip) has a 1% output accuracy across load and temperature that can meet the needs of low-voltage microcontrollers (MCUs) and processors.

Low output noise of 30 µV RMS (with 10-nF bypass capacitors) and wide bandwidth PSRR performance of greater than 70 dB at 1 kHz and 40 dB at 1 MHz help attenuate the switching frequency of an upstream DC/DC converter and minimize post regulator filtering.

The internal soft-start time and current-limit protection reduce inrush current during start up, thus minimizing input capacitance. Standard protection features, such as overcurrent and overtemperature protection, are included.

The LP2985-N is available in a 5-pin, 2.9-mm × 1.6-mm SOT-23 (DBV) package.

The LP2985-N is a fixed-output, wide-input, low-noise, low-dropout voltage regulator supporting an input voltage range from 2.5 V to 16 V and up to 150 mA of load current. The LP2985-N supports an output range of 1.2 V to 5.0 V (new chip) and 2.5 V to 6.1 V (legacy chip).

Additionally, the LP2985-N (new chip) has a 1% output accuracy across load and temperature that can meet the needs of low-voltage microcontrollers (MCUs) and processors.

Low output noise of 30 µV RMS (with 10-nF bypass capacitors) and wide bandwidth PSRR performance of greater than 70 dB at 1 kHz and 40 dB at 1 MHz help attenuate the switching frequency of an upstream DC/DC converter and minimize post regulator filtering.

The internal soft-start time and current-limit protection reduce inrush current during start up, thus minimizing input capacitance. Standard protection features, such as overcurrent and overtemperature protection, are included.

The LP2985-N is available in a 5-pin, 2.9-mm × 1.6-mm SOT-23 (DBV) package.
open-in-new Andere Linear- und Low-Dropout-Regler (LDO) suchen
Herunterladen Video mit Transkript ansehen Video

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 7
Typ Titel Datum
* Data sheet LP2985-N 150-mA, Low-Noise, Low-Power, Ultra-Low-Dropout Regulator in a SOT-23 Package datasheet (Rev. AA) PDF | HTML 14 Jul 2023
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Technical article Trends in building automation: connected sensors for user comfort PDF | HTML 02 Sep 2016
Application note AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) 06 Mai 2013
User guide AN-1840 USB I 2 C Interface Board Reference Manual (Rev. A) 30 Apr 2013
Application note AN-1172 LP2980, LP2981, LP2982, LP2985 Micro SMD Demo Boards (Rev. B) 25 Apr 2013
White paper Engineers note: Capacitors are key to voltage regulator design 01 Jul 2002

Design und Entwicklung

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

Evaluierungsplatine

FDC1004QEVM — 4-Kanal-Kapazitäts-Digital-Wandler für die Automobilindustrie – Evaluierungsmodul

The FDC1004Q evaluation module is used to evaluate the FDC1004-Q1, automotive 4-channel capacitive-to-digital converter. The evaluation modules features a breakable PCB composed of three sections: a USB to I²C converter based on the MSP430F5528 microcontroller, the FDC1004-Q1, and two sensor (...)

Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Evaluierungsplatine

LDC1314DIAL-EVM — LDC1314 Induktivitäts-Digital-Wandler – Evaluierungsmodul: 1-Grad-Drehregler

The LDC1314DIAL evaluation module implements a contactless rotational position sensing solution that is accurate to 1 degree with 0.1 degree resolution.

This design uses the LDC1314 but can also be replicated with the LDC1312, LDC1612 and LDC1614.

Nicht verfügbar auf TI.com
Simulationsmodell

LP2985_N_2P5 PSpice Transient Model

SNVM632.ZIP (40 KB) - PSpice Model
Herunterladen
Simulationsmodell

LP2985_N_2P5 Unencrypted PSpice Transient Model

SNVMA86.ZIP (1 KB) - PSpice Model
Herunterladen
Simulationsmodell

LP2985_N_3P3 PSpice Transient Model

SNVM634.ZIP (41 KB) - PSpice Model
Herunterladen
Simulationsmodell

LP2985_N_3P3 Unencrypted PSpice Transient Model

SNVMA84.ZIP (1 KB) - PSpice Model
Herunterladen
Simulationsmodell

LP2985_N_5P0 PSpice Transient Model

SNVM633.ZIP (40 KB) - PSpice Model
Herunterladen
Simulationsmodell

LP2985_N_5P0 Unencrypted PSpice Transient Model

SNVMA85.ZIP (1 KB) - PSpice Model
Herunterladen
Referenzdesigns

TIDA-00300 — Referenzdesign für isolierte Stromversorgungsarchitektur für Kommunikations- und analoge Eingangs-/A

This reference design provides a means to isolate I2C or SPI communication lines. This is often required in grid infrastructure applications such as protection relays and circuit breakers where high voltages are involved. This reference design provides both power isolation and signal isolation.
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-00508 — 1-Schalter-Referenzdesign unter Verwendung des Inductance-to-Digital Converter LDC1314

The LDC1314's unique inductive sensing capability is used to implement a contactless rotational position sensing solution that is accurate to 1 degree. It uses standard PCB technology and easily manufactured components to implement a low cost solution.

This reference design uses the LDC1314.  (...)

Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-00440 — Referenzdesign zur Leckstrommessung für die Bestimmung des Isolationswiderstands

This reference design measures insulation resistance up to 100 MΩ. It has an on-board isolated 500-Vdc power supply and an isolated signal conditioning circuit to measure the leakage current. This design is useful to find leakage due to insulation breakdown in transformer and motor windings.
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-00509 — Referenzdesign für induktives 16-Tasten-Tastenfeld mit dem Induktivität-Digital-Wandler LDC1314

The LDC1314's unique inductive sensing capability is used to implement a contactless, 16 button, multi-function keypad. It uses standard PCB technology and easily manufactured components to implement a low cost solution.

This reference design uses the LDC1314.  This reference design can also be (...)

Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-01070 — HVAC-Spulen-Luftstromsensor-Referenzdesign für die vorbeugende Wartung beim Luftfilterwechsel

This design provides a reference for monitoring airflow efficiency and temperature through heat ventilation and air conditioner (HVAC) systems. The reference design is used in conjunction with solid state relays and piezoelectric vibration sensors to monitor and react accordingly to low airflow and (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-01465 — Referenzdesign zur kapazitiven Frost- oder Eisdetektion, Auflösung von <1 mm, Temperaturdrift <0,25 

Frost and ice buildup on cooling bodies and evaporators can significantly decrease system energy efficiency in many appliance applications such as refrigerators, air conditioners, and freezers. This sensor reference design helps to achieve the more stringent energy efficiency requirements of (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

PMP20587 — Invertierende Abwärts-/Aufwärtswandler – Referenzdesign

This reference design uses UCD3138064A as a digital controller to control two-phase two-rail inverting buck-boost. This non-isolated converter is used for wireless radio power. The input voltage is from -35 V to -60 V. There are two outputs. The default output voltage of rail 1 is 32 V and max (...)
Test report: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-01102 — Induktiv Touch-Edelstahl-Tastenfeld-Referenzdesign für wasserdichte/geräuscharme HMI-Anwendungen

This 16-button stainless steel keypad, which utilizes TI's inductive touch technology, demonstrates highly sensitive buttons on a single piece of 0.6mm thick stainless steel metal.  The design utilizes a MUXed approach to implement many buttons with a single LDC1614. The design is (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

PMP30197 — 5,85 W, Isolierter, selbstgesteuerter, synchroner, invertierender Fly-Abwärts/Aufwärtswandler mit Op

The PMP30197 reference design is an inverting Fly-BuckBoost power supply using the LM2743 to generate an isolated output voltage of 3.9V. The design accepts an input voltage of 2V to 5.25V.  The converter regulates the secondary side output with an optocoupler and is capable of achieving good (...)
Test report: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-00590 — Referenzdesign für Dual-Batterielader-IC (verbunden über Kaskodenkonfiguration)

Higher capacity 1S batteries in the latest smartphones and tablets need higher charge currents to charge faster.  With 12-V power sources, two 5-A battery charger ICs connected in cascode, parallel configuration can provide more than 5-A charging current.  In addition, the heat from the (...)
Schaltplan: PDF
Gehäuse Pins Herunterladen
SOT-23 (DBV) 5 Optionen anzeigen
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