Startseite Energiemanagement AC/DC- und DC/DC-Wandler (integrierter FET)
Startseite
Energiemanagement
AC/DC- und DC/DC-Wandler (integrierter FET)

LMQ62440-Q1

AKTIV

Synchroner Abwärtswandler für die Automobilindustrie, 3 36 V, 4 A, rauscharm, Festfrequenz

Jetzt bestellen
Datenblatt

LMQ62440-Q1

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 2200 Switching frequency (max) (kHz) 2200 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34 Iq (typ) (A) 0.000007
Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 2200 Switching frequency (max) (kHz) 2200 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34 Iq (typ) (A) 0.000007
VQFN-HR (RJR) 14 14 mm² 4 x 3.5
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +150°C, TJ
  • Functional Safety-Capable
  • Optimized for ultra-low EMI requirements
    • Meets CISPR25 class 5 standard
    • Hotrod™ package minimizes switch node ringing
    • Internal bypass capacitors reduce EMI
    • Parallel input path minimizes parasitic inductance
    • Spread spectrum reduces peak emissions
    • Adjustable switch node rise time
  • Designed for rugged Automotive applications
    • Supports 42-V load dump
    • 0.4-V dropout with 4-A load (typical)
  • High efficiency power conversion at all loads
    • 7-µA no load current at 13.5 VIN, 3.3 VOUT
    • 90% PFM efficiency at 1-mA, 13.5 VIN, 5 VOUT
    • Low MOSFET ON resistance
      • RDS_ON_HS = 41 mΩ (typical)
      • RDS_ON_LS = 21 mΩ (typical)
  • External bias option for improved efficiency
  • Pin compatible with:
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +150°C, TJ
  • Functional Safety-Capable
  • Optimized for ultra-low EMI requirements
    • Meets CISPR25 class 5 standard
    • Hotrod™ package minimizes switch node ringing
    • Internal bypass capacitors reduce EMI
    • Parallel input path minimizes parasitic inductance
    • Spread spectrum reduces peak emissions
    • Adjustable switch node rise time
  • Designed for rugged Automotive applications
    • Supports 42-V load dump
    • 0.4-V dropout with 4-A load (typical)
  • High efficiency power conversion at all loads
    • 7-µA no load current at 13.5 VIN, 3.3 VOUT
    • 90% PFM efficiency at 1-mA, 13.5 VIN, 5 VOUT
    • Low MOSFET ON resistance
      • RDS_ON_HS = 41 mΩ (typical)
      • RDS_ON_LS = 21 mΩ (typical)
  • External bias option for improved efficiency
  • Pin compatible with:

The LMQ62440-Q1 is a high-performance, DC-DC synchronous buck converter with integrated bypass capacitors. With integrated high-side and low-side MOSFETs, up to 4 A of output current is delivered over a wide input range of 3.0 V to 36 V; 42-V tolerance supports load dump for durations of 400 ms. The device implements soft recovery from dropout eliminating overshoot on the output.

The device is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, integrated bypass capacitors, adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto-mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, ensures exceptional efficiency across the entire load range.

The device is available in a 14-pin VQFN-HR package with wettable flanks. Electrical characteristics are specified over a junction temperature range of –40°C to +150°C. Find additional resources in the Related Documentation.

The LMQ62440-Q1 is a high-performance, DC-DC synchronous buck converter with integrated bypass capacitors. With integrated high-side and low-side MOSFETs, up to 4 A of output current is delivered over a wide input range of 3.0 V to 36 V; 42-V tolerance supports load dump for durations of 400 ms. The device implements soft recovery from dropout eliminating overshoot on the output.

The device is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, integrated bypass capacitors, adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto-mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, ensures exceptional efficiency across the entire load range.

The device is available in a 14-pin VQFN-HR package with wettable flanks. Electrical characteristics are specified over a junction temperature range of –40°C to +150°C. Find additional resources in the Related Documentation.
open-in-new Andere AC/DC- und DC/DC-Wandler (integrierter FET) suchen
Herunterladen Video mit Transkript ansehen Video

Ähnliche Produkte, die für Sie interessant sein könnten

open-in-new Alternativen vergleichen
Gleiche Funktionalität, gleiche Pinbelegung wie verglichener Baustein
LM62435-Q1 AKTIV 3-V bis 36-V, 3,5-A, rauscharmer Synchron-Abwärtswandler für die Automobilindustrie No integrated caps

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 6
Typ Titel Datum
* Data sheet LMQ62440-Q1 Automotive 3-V to 36-V, Low EMI Synchronous Step-Down Converter datasheet (Rev. A) 24 Sep 2020
White paper Time-Saving and Cost-Effective Innovations for EMI Reduction (Rev. A) PDF | HTML 28 Nov 2023
User guide LMQ62440EVM 2-MHz User's Guide PDF | HTML 14 Sep 2020
Functional safety information LMQ6x4x0-Q1 Functional Safety, FIT Rate, FMD, and Pin FMA (Rev. A) PDF | HTML 09 Sep 2020
Certificate LMQ62440EVM-2MHz EU Declaration of Conformity (DoC) 01 Sep 2020
Functional safety information LMQ62440-Q1 Functional Safety, FIT Rate, and Failure Mode Distribution 01 Apr 2020

Design und Entwicklung

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

Evaluierungsplatine

LMQ62440EVM — Evaluierungsmodul für synchronen Abwärtswandler mit 36 V und niedrigem EMI, 4 A, 5 V, 2,1 MHz

The LMQ62440EVM evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMQ62440 synchronous step-down converter.  The LMQ62440 provides exceptional efficiency, low Iq, and low EMI in small solution size with integrated capacitors.
Benutzerhandbuch: PDF | HTML
Nicht verfügbar auf TI.com
Simulationsmodell

LMQ62440APP-Q1 PSpice Transient Model

SNVMC42.ZIP (129 KB) - PSpice Model
Herunterladen
Simulationsmodell

LMQ62440BPP-Q1 PSpice Transient Model

SNVMC44.ZIP (298 KB) - PSpice Model
Herunterladen
Simulationsmodell

LMQ62440CPP-Q1 PSpice Transient Model

SNVMC43.ZIP (292 KB) - PSpice Model
Herunterladen
Designtool

SNVR489 — LMQ62440EVM-2MHz Design Files

Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Produkte
AC/DC- und DC/DC-Wandler (integrierter FET)
LMQ62440-Q1 — Synchroner Abwärtswandler für die Automobilindustrie, 3 36 V, 4 A, rauscharm, Festfrequenz
Hardware-Entwicklung
Evaluierungsplatine
LMQ62440EVM — Evaluierungsmodul für synchronen Abwärtswandler mit 36 V und niedrigem EMI, 4 A, 5 V, 2,1 MHz
Herunterladen
Gehäuse Pins Herunterladen
VQFN-HR (RJR) 14 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

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