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LM46002

AKTIV

Synchroner Abwärtsspannungswandler, 3,5 bis 60 V, 2 A

Eine neuere Version dieses Produkts ist verfügbar

Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung.
LMR36520 AKTIV Synchroner Abwärtswandler SIMPLE SWITCHER®, 4,2 bis 65 V, 2 A, mit 26 uA Ruhestrom Higher input voltage rating, easy to use SO-8 package and an FPWM option.
TLVM13620 AKTIV Abwärtsmodul, 3,6-V- bis 36-V-Eingang, 1-V- bis 6-V-Ausgang, 2 A, Gehäuse 4 mm x 6 mm x 1,8 mm Smaller design with an integrated-inductor power module.

Produktdetails

Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 60 Vin (min) (V) 3.5 Vout (max) (V) 28 Vout (min) (V) 1 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000027 Duty cycle (max) (%) 99
Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 60 Vin (min) (V) 3.5 Vout (max) (V) 28 Vout (min) (V) 1 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000027 Duty cycle (max) (%) 99
HTSSOP (PWP) 16 32 mm² (5 mm × 6.4 mm)
  • 27-µA Quiescent current in regulation
  • High efficiency at light load (DCM and PFM)
  • Meets EN55022/CISPR 22 EMI standards
  • Integrated synchronous rectification
  • Adjustable frequency range: 200 kHz to 2.2 MHz (500 kHz default)
  • Frequency synchronization to external clock
  • Internal compensation
  • Stable with almost any combination of ceramic, polymer, tantalum, and aluminum capacitors
  • Power-good flag
  • Soft start into prebiased load
  • Internal soft start: 4.1 ms
  • Extendable soft-start time by external capacitor
  • Output voltage tracking capability
  • Precision enable to program system UVLO
  • Output short-circuit protection with hiccup mode
  • Overtemperature thermal shutdown protection
  • Create a custom design using the LM46002 with the WEBENCH® Power Designer
  • 27-µA Quiescent current in regulation
  • High efficiency at light load (DCM and PFM)
  • Meets EN55022/CISPR 22 EMI standards
  • Integrated synchronous rectification
  • Adjustable frequency range: 200 kHz to 2.2 MHz (500 kHz default)
  • Frequency synchronization to external clock
  • Internal compensation
  • Stable with almost any combination of ceramic, polymer, tantalum, and aluminum capacitors
  • Power-good flag
  • Soft start into prebiased load
  • Internal soft start: 4.1 ms
  • Extendable soft-start time by external capacitor
  • Output voltage tracking capability
  • Precision enable to program system UVLO
  • Output short-circuit protection with hiccup mode
  • Overtemperature thermal shutdown protection
  • Create a custom design using the LM46002 with the WEBENCH® Power Designer

The LM46002 regulator is an easy-to-use synchronous step-down DC/DC converter capable of driving up to 2 A of load current from an input voltage ranging from 3.5 V to 60 V. The LM46002 provides exceptional efficiency, output accuracy and drop-out voltage in a very small solution size. An extended family is available in various load current options and 36-V maximum input voltage in pin-to-pin compatible packages, including LM46001, LM46000, LM43603, LM43602, LM43601 and LM43600. Peak-current-mode control is employed to achieve simple control-loop compensation and cycle-by-cycle current limiting. Optional features such as programmable switching frequency, synchronization, power-good flag, precision enable, internal soft start, extendable soft start, and tracking provide a flexible and easy-to-use platform for a wide range of applications. Discontinuous conduction and automatic frequency reduction at light loads improve light load efficiency. The family requires few external components. Pin arrangement allows simple, optimum PCB layout. Protection features include thermal shutdown, VCC undervoltage lockout, cycle-by-cycle current limit, and output short-circuit protection. The LM46002 device is available in the 16-lead HTSSOP / PWP package (6.6 mm × 5.1 mm × 1.2 mm) with 0.65-mm lead pitch.

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The LM46002 regulator is an easy-to-use synchronous step-down DC/DC converter capable of driving up to 2 A of load current from an input voltage ranging from 3.5 V to 60 V. The LM46002 provides exceptional efficiency, output accuracy and drop-out voltage in a very small solution size. An extended family is available in various load current options and 36-V maximum input voltage in pin-to-pin compatible packages, including LM46001, LM46000, LM43603, LM43602, LM43601 and LM43600. Peak-current-mode control is employed to achieve simple control-loop compensation and cycle-by-cycle current limiting. Optional features such as programmable switching frequency, synchronization, power-good flag, precision enable, internal soft start, extendable soft start, and tracking provide a flexible and easy-to-use platform for a wide range of applications. Discontinuous conduction and automatic frequency reduction at light loads improve light load efficiency. The family requires few external components. Pin arrangement allows simple, optimum PCB layout. Protection features include thermal shutdown, VCC undervoltage lockout, cycle-by-cycle current limit, and output short-circuit protection. The LM46002 device is available in the 16-lead HTSSOP / PWP package (6.6 mm × 5.1 mm × 1.2 mm) with 0.65-mm lead pitch.

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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt LM46002 3.5-V to 60-V, 2-A Synchronous Step-Down Voltage Converter datasheet (Rev. C) PDF | HTML 05.04.2019
Anwendungshinweis Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 25.03.2024
Anwendungshinweis Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) PDF | HTML 26.07.2021
Auswahlhilfe Buck Converter Quick Reference Guide (Rev. B) 08.04.2021
Anwendungshinweis Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) 12.03.2019
Anwendungshinweis Differences Between LM4600x/LM4360x A and Non-A OPNs 27.03.2018
Whitepaper Synchronous Rectification in High-Performance Power Converter Design (Rev. A) PDF | HTML 15.09.2016
Weitere Dokumente SIMPLE SWITCHER Synchronous Regulator Series (Rev. B) 08.02.2016
Technischer Artikel Inverting made simple by unleashing the buck PDF | HTML 19.05.2015
Anwendungshinweis Inverting Applications Made SIMPLE With LM4600x and LM4360x (Rev. B) 20.02.2015
Anwendungshinweis Thermal Design Made Simple With LM43603 and LM46002 15.09.2014
Anwendungshinweis Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 12.09.2014
Anwendungshinweis Compensation Made SIMPLE With LM4360x, LM4600x 29.07.2014
Anwendungshinweis AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A) 06.05.2013
Anwendungshinweis AN-1533 Overvoltage Protection Circuit for Automotive Load Dump (Rev. B) 06.05.2013
Anwendungshinweis AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 24.04.2013
Anwendungshinweis AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 23.04.2013
Anwendungshinweis AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 23.04.2013
Anwendungshinweis AN-1197 Selecting Inductors for Buck Converters (Rev. B) 23.04.2013
Anwendungshinweis AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 23.04.2013
Anwendungshinweis AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 23.04.2013
Anwendungshinweis AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 23.04.2013
Anwendungshinweis AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 23.04.2013
Anwendungshinweis AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 23.04.2013
Anwendungshinweis Understanding and Applying Current-Mode Control Theory 19.08.2007
Anwendungshinweis Input and Output Capacitor Selection 19.09.2005
Weitere Dokumente SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 12.07.2005
Anwendungshinweis AN-643 EMI/RFI Board Design (Rev. B) 03.05.2004

Design und Entwicklung

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Evaluierungsplatine

LM46002PWPEVM — LM46002PWP Evaluierungsmodul für synchronen Abwärtswandler

The Texas Instruments LM46002PWPEVM evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM46002PWP, A 60V Synchronous Step-Down Converter. The EVM operates from a 3.5V to 60V input and provides a 5V output at 2A.

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Simulationsmodell

LM46002 PSpice Average Model

SNVM576.ZIP (88 KB) - PSpice-Modell
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LM46002 PSpice Inverting Buck Boost and Non Inverting Buck Transient Model (Rev. C)

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LM46002 TINA-TI Transient Reference Design

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LM46002 TINA-TI Transient Spice Model

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LM46002 Unencrypted Inverting and Non-inverting PSpice Transient Model (Rev. B)

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LM46002 Unencrypted PSpice Average Model

SNVM730.ZIP (1 KB) - PSpice-Modell
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Referenzdesign

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