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AC/DC & DC/DC converters (integrated FET)

LMR14030-Q1

AKTIV

SIMPLE SWITCHER®-Abwärtsspannungswandler mit 40 V, 3,5 A, 2,2 MHz und 40 μA IQ für die Automobilindu

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Gleiche Funktionalität, andere Pinbelegung als verglichener Baustein
LM63635-Q1 AKTIV Abwärtsspannungswandler, 3,5 bis 32 V, 3,25 A, mit Spread-Spectrum Smaller footprint and improved EMI performance in HotRod™ QFN package.

LMR14030-Q1

AKTIV
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Produktdetails

Iout (max) (A) 3.5 Vin (min) (V) 4 Vin (max) (V) 40 Topology Buck Type Converter Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Spread Spectrum, Tracking, UVLO adjustable Control mode current mode Vout (min) (V) 1 Vout (max) (V) 30 Rating Automotive Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00004
Iout (max) (A) 3.5 Vin (min) (V) 4 Vin (max) (V) 40 Topology Buck Type Converter Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Spread Spectrum, Tracking, UVLO adjustable Control mode current mode Vout (min) (V) 1 Vout (max) (V) 30 Rating Automotive Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00004
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 WSON (DPR) 10 16 mm² 4 x 4
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    - Device Temperature Grade 1: –40°C to 125°C
    Ambient Operating Temperature Range
    - Device HBM ESD Classification Level H1C
    - Device CDM ESD Classification Level C4A
  • 4 V to 40 V Input Range
  • 3.5 A Continuous Output Current
  • Ultra-low 40 µA Operating Quiescent Current
  • 90 mΩ High-Side MOSFET
  • Minimum Switch-On Time: 75 ns
  • Current Mode Control
  • Adjustable Switching Frequency from 200 kHz to
    2.5 MHz
  • Frequency Synchronization to External Clock
  • Spread Spectrum Option for Reduced EMI
  • Internal Compensation for Ease of Use
  • High Duty Cycle Operation Supported
  • Precision Enable Input
  • 1 µA Shutdown Current
  • External Soft-start
  • Thermal, Overvoltage and Short Protection
  • 8-Pin HSOIC with PowerPAD™ Package
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    - Device Temperature Grade 1: –40°C to 125°C
    Ambient Operating Temperature Range
    - Device HBM ESD Classification Level H1C
    - Device CDM ESD Classification Level C4A
  • 4 V to 40 V Input Range
  • 3.5 A Continuous Output Current
  • Ultra-low 40 µA Operating Quiescent Current
  • 90 mΩ High-Side MOSFET
  • Minimum Switch-On Time: 75 ns
  • Current Mode Control
  • Adjustable Switching Frequency from 200 kHz to
    2.5 MHz
  • Frequency Synchronization to External Clock
  • Spread Spectrum Option for Reduced EMI
  • Internal Compensation for Ease of Use
  • High Duty Cycle Operation Supported
  • Precision Enable Input
  • 1 µA Shutdown Current
  • External Soft-start
  • Thermal, Overvoltage and Short Protection
  • 8-Pin HSOIC with PowerPAD™ Package

The LMR14030-Q1 is a 40 V, 3.5 A step down regulator with an integrated high-side MOSFET. With a wide input range from 4 V to 40 V, it’s suitable for various applications from industrial to automotive for power conditioning from unregulated sources. An extended family is available in 2 A and 5 A options in pin-to-pin compatible packages, including LMR14020-Q1 and LMR14050-Q1. The regulator’s quiescent current is 40 µA in Sleep-mode, which is suitable for battery powered systems. An ultra-low 1 µA current in shutdown mode can further prolong battery life. A wide adjustable switching frequency range allows either efficiency or external component size to be optimized. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This also minimizes the external components of the device. A precision enable input allows simplification of regulator control and system power sequencing. The device also has built-in protection features such as cycle-by-cycle current limit, thermal sensing and shutdown due to excessive power dissipation, and output overvoltage protection.

The LMR14030-Q1 is available in an 8-pin HSOIC or 10-pin WSON package with exposed pad for low thermal resistance.

The LMR14030-Q1 is a 40 V, 3.5 A step down regulator with an integrated high-side MOSFET. With a wide input range from 4 V to 40 V, it’s suitable for various applications from industrial to automotive for power conditioning from unregulated sources. An extended family is available in 2 A and 5 A options in pin-to-pin compatible packages, including LMR14020-Q1 and LMR14050-Q1. The regulator’s quiescent current is 40 µA in Sleep-mode, which is suitable for battery powered systems. An ultra-low 1 µA current in shutdown mode can further prolong battery life. A wide adjustable switching frequency range allows either efficiency or external component size to be optimized. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This also minimizes the external components of the device. A precision enable input allows simplification of regulator control and system power sequencing. The device also has built-in protection features such as cycle-by-cycle current limit, thermal sensing and shutdown due to excessive power dissipation, and output overvoltage protection.

The LMR14030-Q1 is available in an 8-pin HSOIC or 10-pin WSON package with exposed pad for low thermal resistance.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet LMR14030-Q1 SIMPLE SWITCHER® 40 V, 3.5 A Step-Down Converter with 40 µA IQ datasheet (Rev. A) PDF | HTML 03 Feb 2016
Application note Design Consideration on Boot Resistor in Buck Converter PDF | HTML 15 Mai 2023
Selection guide Automotive Infotainment EE Buck Converter/Controller Selection Guide (Rev. B) 15 Apr 2021
Application note Reduce Conducted EMI in Automotive Buck Converter Applications 31 Jul 2019
Application note How to Evaluate Junction Temperature Properly with Thermal Metrics (Rev. B) 29 Mär 2019
Technical article Which multichannel buck converter layout offers better EMI performance? PDF | HTML 23 Okt 2018
Application note How SYNC Logic Affects EMI Performance for Dual-Channel Buck Converters 27 Apr 2018
Application note Low Conducted EMI Power Solution for Automotive Digital Cockpit With LMR14050 an 07 Feb 2018
Application note Design Feedforward Capacitor for LMR14020 20 Dez 2017
Application note How to Evaluate the Maximum Inductor in Internal Compensation PCM Buck Converter 20 Sep 2017
Application note Extending Buck Regulator to Positive Buck-Boost Configuration 02 Sep 2017
EVM User's guide LMR14030QDPR EVM User's Guide 08 Feb 2016

Design und Entwicklung

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

Evaluierungsplatine

LMR14030QDPREVM — LMR14030QDPR Abwärtswandler mit großem Vin – Evaluierungsmodul

The LMR14030QDPREVM is a fully assembled and tested circuit for evaluating the LMR14030QDPRRQ1 Step-Down Converter. The LMR14030QDPREVM operates from 7V to 40V input (12V nominal) and provides a 5.0V or 3.3V output at 3.5A. The board has jumper connectors to enable or disable the converter (...)
Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Evaluierungsplatine

LMR14030SEVM — Evaluierungsmodul für Abwärtswandler LMR14030S

The LMR14030SEVM is a fully assembled and tested circuit for evaluating the LMR14030S Step-Down Converter. The LMR14030SEVM operates from 7V to 36V input (12V nominal) and provides a 5.0V or 3.3V output at 3.5A. The board also has jumper connectors to enable or disable the converter operation, (...)

Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Simulationsmodell

LMR14030S PSPICE Transient Model

SNVM707.ZIP (61 KB) - PSpice Model
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Simulationsmodell

LMR14030S PSpice Average Model

SNVMBD5.ZIP (72 KB) - PSpice Model
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Simulationsmodell

LMR14030S Unencrypted PSpice Transient Model

SNVM922.ZIP (6 KB) - PSpice Model
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Referenzdesigns

TIDA-020001 — Referenzdesign für Fahrzeugrückleuchte mit Local Dimming für 144 Bereiche

This local dimming backlight reference design conserves power, extends the life of liquid-crystal displays (LCDs), and enhances automotive display quality through high dynamic range (HDR) or localized dimming technology. Seven multi-channel constant-current LED drivers allow for 144-zone localized (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

PMP11136 — Radio-USB-Stromanschluss (5 V@2,1 A) und LED-Hintergrundbeleuchtungstreiber für die Automobilindustr

The PMP11136 reference design supplies cable drop compensated USB outputs of 5V @ 2.1A and 5V @ 1A. Additionally, there is a buck converter output of 3.3V @ 2.5A and a 12V @ 0.163A current regulated LED boost converter.
Test report: PDF
Schaltplan: PDF
Gehäuse Pins Herunterladen
HSOIC (DDA) 8 Optionen anzeigen
WSON (DPR) 10 Optionen anzeigen
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Bestellen & Qualität

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  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
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