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AC/DC 和 DC/DC 轉換器 (整合式 FET)

LM3102-Q1

現行

同步 1MHz 2.5A 降壓電壓穩壓器

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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
LMQ66430-Q1 現行 具 1.5-µA IQ 的汽車 36V、3-A、低 EMI 同步降壓轉換器 Integrated input bypass capacitor and boot cap for lower EMI and smaller footprint, dual-random spread spectrum and lower IQ.

LM3102-Q1

現行
產品規格表 立即訂購

產品詳細資料

Rating Automotive Topology Buck Iout (max) (A) 2.5 Vin (max) (V) 42 Vin (min) (V) 4.5 Vout (max) (V) 7 Vout (min) (V) 0.8 Features Enable, Overcurrent protection, Synchronous rectification Control mode COT with emulated ripple Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1000 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 1000 Duty cycle (max) (%) 94 Type Converter
Rating Automotive Topology Buck Iout (max) (A) 2.5 Vin (max) (V) 42 Vin (min) (V) 4.5 Vout (max) (V) 7 Vout (min) (V) 0.8 Features Enable, Overcurrent protection, Synchronous rectification Control mode COT with emulated ripple Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1000 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 1000 Duty cycle (max) (%) 94 Type Converter
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • AEC-Q100-Qualified for Automotive Applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Low Component Count and Small Solution Size
  • Stable With Ceramic and Other Low-ESR Capacitors
  • No Loop Compensation Required
  • High Efficiency at a Light Load by DCM Operation
  • Prebias Start-Up
  • Ultra-Fast Transient Response
  • Programmable Soft Start
  • Programmable Switching Frequency up to 1 MHz
  • Valley Current Limit
  • Output Overvoltage Protection
  • Precision Internal Reference for an Adjustable Output Voltage Down to 0.8 V
  • Thermal Shutdown
  • Key Specifications
    • Input Voltage Range 4.5 V to 42 V
    • 2.5-A Output Current
    • 0.8 V, ±1.5% Reference
    • Integrated Dual N-Channel Main and Synchronous MOSFETs
    • Thermally Enhanced 20-Pin HTSSOP Package
  • Create a Custom Design using the LM3102-Q1 with the WEBENCH® Power Designer
  • AEC-Q100-Qualified for Automotive Applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Low Component Count and Small Solution Size
  • Stable With Ceramic and Other Low-ESR Capacitors
  • No Loop Compensation Required
  • High Efficiency at a Light Load by DCM Operation
  • Prebias Start-Up
  • Ultra-Fast Transient Response
  • Programmable Soft Start
  • Programmable Switching Frequency up to 1 MHz
  • Valley Current Limit
  • Output Overvoltage Protection
  • Precision Internal Reference for an Adjustable Output Voltage Down to 0.8 V
  • Thermal Shutdown
  • Key Specifications
    • Input Voltage Range 4.5 V to 42 V
    • 2.5-A Output Current
    • 0.8 V, ±1.5% Reference
    • Integrated Dual N-Channel Main and Synchronous MOSFETs
    • Thermally Enhanced 20-Pin HTSSOP Package
  • Create a Custom Design using the LM3102-Q1 with the WEBENCH® Power Designer

The LM3102-Q1 synchronously rectified buck converter features all required functions to implement a highly efficient and cost-effective buck regulator. The device can supply 2.5 A to loads with an output voltage as low as 0.8 V. Dual N-channel synchronous MOSFET switches allow a low component count, thus reducing complexity and minimizing board size.

Different from most other COT regulators, the LM3102-Q1 does not rely on output capacitor ESR for stability and is designed to work exceptionally well with ceramic and other very low-ESR output capacitors. The device requires no loop compensation, results in a fast load transient response and simple circuit implementation. The operating frequency remains nearly constant with line variations due to the inverse relationship between the input voltage and the ON-time. The operating frequency can be externally programmed up to 1 MHz. Protection features include VCC undervoltage lockout (UVLO), output overvoltage protection, thermal shutdown, and gate-drive UVLO. The LM3102-Q1 is available in the thermally enhanced 20-pin HTSSOP package.

The LM3102-Q1 synchronously rectified buck converter features all required functions to implement a highly efficient and cost-effective buck regulator. The device can supply 2.5 A to loads with an output voltage as low as 0.8 V. Dual N-channel synchronous MOSFET switches allow a low component count, thus reducing complexity and minimizing board size.

Different from most other COT regulators, the LM3102-Q1 does not rely on output capacitor ESR for stability and is designed to work exceptionally well with ceramic and other very low-ESR output capacitors. The device requires no loop compensation, results in a fast load transient response and simple circuit implementation. The operating frequency remains nearly constant with line variations due to the inverse relationship between the input voltage and the ON-time. The operating frequency can be externally programmed up to 1 MHz. Protection features include VCC undervoltage lockout (UVLO), output overvoltage protection, thermal shutdown, and gate-drive UVLO. The LM3102-Q1 is available in the thermally enhanced 20-pin HTSSOP package.
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類型 標題 日期
* Data sheet LM3102-Q1 Automotive Synchronous 1-MHz, 2.5-A Step-Down Voltage Regulator datasheet PDF | HTML 2019年 5月 23日
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024年 3月 25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
User guide AN-1646 LM3102 Demonstration Board Reference Design (Rev. A) 2013年 4月 29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 AN-2200 Precision Current Limiting with the LMP8646 and LMZ12003 (Rev. A) 2013年 4月 23日
Application note AN-2218 Precision Current Limiting with the LMP8646 and LM3102 (Rev. A) 2013年 4月 23日
User guide AN-1646 LM3102 Demonstration Board Reference Design 2007年 10月 1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

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開發板

LM3102EVAL — SIMPLE SWITCHER® 同步 1 MHz 2.5A 降壓穩壓器評估模組

  • Low component count and small solution size
  • Stable with ceramic and other low ESR capacitors
  • No loop compensation required
  • High efficiency at a light load by DCM operation
  • Pre-bias startup
  • Ultra-fast transient response
  • Programmable soft-start
  • Programmable switching frequency up to 1 MHz
  • Valley current (...)
使用指南: PDF
TI.com 無法提供
模擬型號

LM3102 PSpice Transient Model

SNVM096.ZIP (225 KB) - PSpice Model
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模擬型號

LM3102 TINA-TI Line Transient Reference Design

SNVM068.TSC (186 KB) - TINA-TI Reference Design
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模擬型號

LM3102 TINA-TI Load Transient Reference Design

SNVM070.TSC (185 KB) - TINA-TI Reference Design
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模擬型號

LM3102 TINA-TI Startup Transient Reference Design

SNVM071.TSC (211 KB) - TINA-TI Reference Design
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模擬型號

LM3102 TINA-TI Steady Transient Reference Design

SNVM069.TSC (209 KB) - TINA-TI Reference Design
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模擬型號

LM3102 TINA-TI Transient Spice Model

SNVM067.ZIP (17 KB) - TINA-TI Spice Model
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模擬型號

LM3102 Unencrypted PSpice Transient Model

SNVM920.ZIP (3 KB) - PSpice Model
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HTSSOP (PWP) 20 Ultra Librarian
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