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AC/DC 和 DC/DC 轉換器 (整合式 FET)
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AC/DC 和 DC/DC 轉換器 (整合式 FET)

LM46002

現行

3.5V 至 60V、2A 同步降壓電壓轉換器

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產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同，但引腳輸出與所比較的裝置不同
LMR36520 現行 具有 26-uA IQ 的 SIMPLE SWITCHER® 4.2-V 至 65-V、2-A 同步降壓轉換器 Higher input voltage rating, easy to use SO-8 package and an FPWM option.
TLVM13620 現行 採用 4-mm x 6-mm x 1.8-mm 封裝的 3.6-V 至 36-V 輸入、1-V 至 6-V 輸出、2-A 降壓模組 Smaller design with an integrated-inductor power module.

LM46002

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 3.5 Vin (max) (V) 60 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking Control mode current mode Vout (min) (V) 1 Vout (max) (V) 28 Iq (typ) (µA) 27 Duty cycle (max) (%) 99
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 3.5 Vin (max) (V) 60 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking Control mode current mode Vout (min) (V) 1 Vout (max) (V) 28 Iq (typ) (µA) 27 Duty cycle (max) (%) 99
HTSSOP (PWP) 16 32 mm² 5 x 6.4
  • 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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技術文件

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類型 標題 日期
* Data sheet LM46002 3.5-V to 60-V, 2-A Synchronous Step-Down Voltage Converter datasheet (Rev. C) PDF | HTML 2019年 4月 5日
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024年 3月 25日
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) PDF | HTML 2021年 7月 26日
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021年 4月 8日
Application note Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) 2019年 3月 12日
Application note Differences Between LM4600x/LM4360x A and Non-A OPNs 2018年 3月 27日
White paper Synchronous Rectification in High-Performance Power Converter Design (Rev. A) 2016年 9月 15日
More literature SIMPLE SWITCHER Synchronous Regulator Series (Rev. B) 2016年 2月 8日
Technical article Inverting made simple by unleashing the buck PDF | HTML 2015年 5月 19日
Application note Inverting Applications Made SIMPLE With LM4600x and LM4360x (Rev. B) 2015年 2月 20日
Application note Thermal Design Made Simple With LM43603 and LM46002 2014年 9月 15日
Application note Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 2014年 9月 12日
Application note Compensation Made SIMPLE With LM4360x, LM4600x 2014年 7月 29日
EVM User's guide LM46002 EVM User Guide 2013年 8月 8日
Application note AN-1533 Overvoltage Protection Circuit for Automotive Load Dump (Rev. B) 2013年 5月 6日
Application note AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A) 2013年 5月 6日
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 2013年 4月 24日
Application note AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 2013年 4月 23日
Application note AN-1197 Selecting Inductors for Buck Converters (Rev. B) 2013年 4月 23日
Application note AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 2013年 4月 23日
Application note AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 2013年 4月 23日
Application note AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 2013年 4月 23日
Application note AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 2013年 4月 23日
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 2013年 4月 23日
Application note AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 2013年 4月 23日
Application note Understanding and Applying Current-Mode Control Theory 2007年 8月 19日
Application note Input and Output Capacitor Selection 2005年 9月 19日
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 2005年 7月 12日
Application note AN-643 EMI/RFI Board Design (Rev. B) 2004年 5月 3日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LM46002PWPEVM — LM46002PWP 同步降壓轉換器評估模組

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.

使用指南: PDF
向經銷商購買
模擬型號

LM46002 PSpice Average Model

SNVM576.ZIP (88 KB) - PSpice Model
下載
模擬型號

LM46002 PSpice Inverting Buck Boost and Non Inverting Buck Transient Model (Rev. C)

SNVM583C.ZIP (473 KB) - PSpice Model
下載
模擬型號

LM46002 TINA-TI Transient Reference Design

SNVM606.TSC (87 KB) - TINA-TI Reference Design
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模擬型號

LM46002 TINA-TI Transient Spice Model

SNVM610.ZIP (52 KB) - TINA-TI Spice Model
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模擬型號

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

SNVM729B.ZIP (7 KB) - PSpice Model
下載
模擬型號

LM46002 Unencrypted PSpice Average Model

SNVM730.ZIP (1 KB) - PSpice Model
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參考設計

TIDA-00204 — 符合 EMI/EMC 規範的工業溫度雙連接埠 Gigabit 乙太網路 PHY 參考設計

此設計允許對具有整合式乙太網路 MAC 和交換器的兩種工業級 DP83867IR Gigabit 乙太網路 PHY 和 Sitara™ 主機處理器進行性能評估。本產品的開發符合 EMI 及 EMC 的工業要求。應用韌體為 PHY、UDP 和 TCP/IP 堆疊以及 HTTP Web 伺服器範例實作了驅動程式。主機處理器配置為從板載 SD 卡啟動預先安裝的韌體。USB 虛擬 COM 連接埠提供對 PHY 暫存器的可選存取。JTAG 介面允許自行開發韌體。
使用指南: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
HTSSOP (PWP) 16 Ultra Librarian
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  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
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