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

LMS3655

AKTIV

Synchroner Abwärtswandler mit 400 kHz (5,5 A, 36 V)

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Datenblatt

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open-in-new Alternativen vergleichen
Gleiche Funktionalität, andere Pinbelegung als verglichener Baustein
LM61460 AKTIV Synchroner Abwärtswandler mit geringem EMI-Wert, 3 bis 36 V, 6 A Smaller solution size, higher efficiency and lower EMI.
TPSM63608 AKTIV Kompaktes 36-V-Eingang, 1-V- bis 20-V-Ausgang, 6-A-Abwärts-Stromversorgungsmodul in einem verbessert Smaller design with an integrated-inductor power module.

LMS3655

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Iout (max) (A) 5.5 Vin (min) (V) 3.5 Vin (max) (V) 42 Topology Buck Type Converter Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 500 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 15 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000015
Iout (max) (A) 5.5 Vin (min) (V) 3.5 Vin (max) (V) 42 Topology Buck Type Converter Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 500 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 15 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000015
VQFN-HR (RNL) 22 20 mm² 5 x 4
  • 96% Peak Efficiency While Converting 12 V to 5 V
  • Low EMI and Switch Noise
    • Minimized Switch Node Ringing
    • Pseudo-Random Spread Spectrum
  • 400-kHz (±10%) Fixed Switching Frequency
  • –40°C to +150°C Junction Temperature Range
  • External Frequency Synchronization
  • RESET Output With Internal Filter and 3-ms Release Timer
  • Automatic Light Load Mode for Improved Efficiency
  • Pin-Selectable Forced PWM Mode
  • Built-In Compensation, Soft Start, Current Limit, Thermal Shutdown, and UVLO
  • 0.35-V Dropout With 3.5-A Load at 25°C (Typical)
  • 32-µA IQ_VIN: Quiescent Current at 3.3 VOUT and No Load (Typical)
  • 5.5-A Continuous Load Current
  • Adjustable Output Voltage (1 V to 20 V)
  • ±1.5% Reference Voltage Tolerance
  • 4-mm × 5-mm, 0.5-mm Pitch SON Package
  • 96% Peak Efficiency While Converting 12 V to 5 V
  • Low EMI and Switch Noise
    • Minimized Switch Node Ringing
    • Pseudo-Random Spread Spectrum
  • 400-kHz (±10%) Fixed Switching Frequency
  • –40°C to +150°C Junction Temperature Range
  • External Frequency Synchronization
  • RESET Output With Internal Filter and 3-ms Release Timer
  • Automatic Light Load Mode for Improved Efficiency
  • Pin-Selectable Forced PWM Mode
  • Built-In Compensation, Soft Start, Current Limit, Thermal Shutdown, and UVLO
  • 0.35-V Dropout With 3.5-A Load at 25°C (Typical)
  • 32-µA IQ_VIN: Quiescent Current at 3.3 VOUT and No Load (Typical)
  • 5.5-A Continuous Load Current
  • Adjustable Output Voltage (1 V to 20 V)
  • ±1.5% Reference Voltage Tolerance
  • 4-mm × 5-mm, 0.5-mm Pitch SON Package

The LMS3655 synchronous buck regulators are optimized for high performance applications, providing an adjustable output of 1 V to 20 V. Seamless transition between PWM and PFM modes, along with a low quiescent current, ensures high efficiency and superior transient responses at all loads.

Advanced high-speed circuitry allows the LMS3655 to regulate an input of 24 V to an output of 3.3 V at a fixed frequency of 400 kHz while also enabling a continuous load current of 5.5 A. An innovative frequency foldback architecture allows this device to regulate a 3.3-V output from an input voltage of only 3.5 V. The input voltage can range up to 36 V, with transient tolerance up to 42 V, easing input surge protection design.

An open-drain reset output, with built-in filtering and delay, provides a true indication of system status. This feature negates the requirement for an additional supervisory component, saving cost and board space.

The LMS3655 synchronous buck regulators are optimized for high performance applications, providing an adjustable output of 1 V to 20 V. Seamless transition between PWM and PFM modes, along with a low quiescent current, ensures high efficiency and superior transient responses at all loads.

Advanced high-speed circuitry allows the LMS3655 to regulate an input of 24 V to an output of 3.3 V at a fixed frequency of 400 kHz while also enabling a continuous load current of 5.5 A. An innovative frequency foldback architecture allows this device to regulate a 3.3-V output from an input voltage of only 3.5 V. The input voltage can range up to 36 V, with transient tolerance up to 42 V, easing input surge protection design.

An open-drain reset output, with built-in filtering and delay, provides a true indication of system status. This feature negates the requirement for an additional supervisory component, saving cost and board space.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet LMS3655 5.5-A, 36-V Synchronous, 400-kHz DC-DC Step-Down Converter datasheet (Rev. B) PDF | HTML 01 Mär 2018
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
EVM User's guide LMS36x5-Q1 EVM User's Guide (Rev. A) 13 Apr 2018
Technical article Powering up the performance of sensitive test and measurement systems PDF | HTML 17 Okt 2017
Application note Designing High Performance, Low-EMI, Automotive Power Supplies 30 Sep 2017

Design und Entwicklung

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

Evaluierungsplatine

LMS3655AQEVM — LMS3655-Q1 5,5 A, 5 V, 400 kHz, Synchron-Abwärtswandler – Evaluierungsmodul

The LMS3655AQEVM evaluation module (EVM) demonstrates the capabilities of the LMS3655 automotive integrated buck converter. For optimized EMI performance, the EVM has an EMI filter on the back side that assists with noise reduction. The user can choose to bypass that EMI filter (...)
Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Evaluierungsplatine

LMS3655MQEVM — LMS3655-Q1 5,5 A, 5 V, Synchron-Abwärtswandler, 400 kHz – Evaluierungsmodul

The LMS3655MQEVM evaluation module (EVM) demonstrates the capabilities of the LMS3655-Q1 automotive integrated buck converter. For optimized EMI performance, the LMS3655-Q1 has Spread Spectrum built in and the  EVM has an EMI filter on the back side that assists with noise reduction. The (...)
Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Referenzdesigns

PMP20249 — Referenzdesign für automobiles USB-Doppelladegerät gemäß CISPR 25 Klasse 4 mit vollständigem Fronten

PMP20249 is an EMI optimized design for dual automotive USB charger system utilizing the LMS3635 and LMS3655 regulator ICs (400kHz fully-integrated synchronous buck for automotive application) and TPS2549 USB switch (TPS2549-Q1 automotive USB charging port controller with integrated power switch (...)
Test report: PDF
Schaltplan: PDF
Referenzdesigns

PMP40269 — Referenzdesign für USB Type-C™ DFP 5 V 1,5 A + USB Type-A 5 V 2,4 A-Autolader

PMP40269 is a dual port car charger reference design. It has a USB Type-C™ port and a USB type-A port. The USB Type-C port can provide 5V 1.5A to USB Type-C device. The type-A port can provide 5V 2.4A, it is also capable of compensating for the effects on voltage droop when a smartphone or (...)
Test report: PDF
Schaltplan: PDF
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VQFN-HR (RNL) 22 Optionen anzeigen
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Bestellen & Qualität

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  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
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