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AC/DC 和 DC/DC 轉換器 (整合式 FET)

LM3671

現行

2MHz、600mA 降壓 DC-DC 轉換器

立即訂購
產品規格表

LM3671

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 85 Topology Buck Type Converter Iout (max) (A) 0.6 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1600 Switching frequency (max) (kHz) 2600 Features Enable, Light Load Efficiency, Light load efficiency, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1.1 Vout (max) (V) 3.3 Iq (typ) (µA) 16 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 0.6 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1600 Switching frequency (max) (kHz) 2600 Features Enable, Light Load Efficiency, Light load efficiency, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1.1 Vout (max) (V) 3.3 Iq (typ) (µA) 16 Duty cycle (max) (%) 100
DSBGA (YZR) 5 2.02 mm² 1.616 x 1.25 SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8 USON (NKH) 6 4 mm² 2 x 2
  • LM3671-Q1 is Qualified for Automotive Applications
  • AEC Q100-Qualified With the Following Results
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
  • 16-µA Typical Quiescent Current
  • 600-mA Maximum Load Capability
  • 2-MHz PWM Fixed Switching Frequency (Typical)
  • Automatic PFM-PWM Mode Switching
  • Internal Synchronous Rectification for High Efficiency
  • Internal Soft Start
  • 0.01-µA Typical Shutdown Current
  • Operates from a Single Li-Ion Cell Battery
  • Only Three Tiny Surface-Mount External Components Required (One Inductor, Two Ceramic Capacitors)
  • Current Overload and Thermal Shutdown Protection
  • Available in Fixed Output Voltages and Adjustable Version
  • LM3671-Q1 is Qualified for Automotive Applications
  • AEC Q100-Qualified With the Following Results
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
  • 16-µA Typical Quiescent Current
  • 600-mA Maximum Load Capability
  • 2-MHz PWM Fixed Switching Frequency (Typical)
  • Automatic PFM-PWM Mode Switching
  • Internal Synchronous Rectification for High Efficiency
  • Internal Soft Start
  • 0.01-µA Typical Shutdown Current
  • Operates from a Single Li-Ion Cell Battery
  • Only Three Tiny Surface-Mount External Components Required (One Inductor, Two Ceramic Capacitors)
  • Current Overload and Thermal Shutdown Protection
  • Available in Fixed Output Voltages and Adjustable Version

The LM3671 step-down DC-DC converter is optimized for powering low voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.7 V to 5.5 V. It provides up to 600-mA load current, over the entire input voltage range. There are several different fixed voltage output options available as well as an adjustable output voltage version range from 1.1 V to 3.3 V.

The device offers superior features and performance for mobile phones and similar portable systems. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system control. During PWM mode, the device operates at a fixed-frequency of 2 MHz (typical). Hysteretic PFM mode extends the battery life by reducing the quiescent current to 16 µA (typical) during light load and standby operation. Internal synchronous rectification provides high efficiency during PWM mode operation. In shutdown mode, the device turns off and reduces battery consumption to 0.01 µA (typical).

A high-switching frequency of 2 MHz (typical) allows use of tiny surface-mount components. Only three external surface-mount components, an inductor, and two ceramic capacitors, are required.

For all available packages, see the orderable addendum at the end of the datasheet.

The LM3671 step-down DC-DC converter is optimized for powering low voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.7 V to 5.5 V. It provides up to 600-mA load current, over the entire input voltage range. There are several different fixed voltage output options available as well as an adjustable output voltage version range from 1.1 V to 3.3 V.

The device offers superior features and performance for mobile phones and similar portable systems. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system control. During PWM mode, the device operates at a fixed-frequency of 2 MHz (typical). Hysteretic PFM mode extends the battery life by reducing the quiescent current to 16 µA (typical) during light load and standby operation. Internal synchronous rectification provides high efficiency during PWM mode operation. In shutdown mode, the device turns off and reduces battery consumption to 0.01 µA (typical).

A high-switching frequency of 2 MHz (typical) allows use of tiny surface-mount components. Only three external surface-mount components, an inductor, and two ceramic capacitors, are required.

For all available packages, see the orderable addendum at the end of the datasheet.
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類型 標題 日期
* Data sheet LM3671/-Q1 2-MHz, 600-mA Step-Down DC-DC Converter datasheet (Rev. S) PDF | HTML 2016年 5月 12日
Application note Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 2022年 5月 23日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Technical article When to select an integrated inductor DC/DC module over a linear regulator PDF | HTML 2016年 5月 16日
Analog Design Journal Analog Applications Journal 3Q 2015 2015年 7月 24日
Analog Design Journal Transient-testing platforms and automation techniques for LDOs and buck regulato 2015年 7月 24日
EVM User's guide AN-1395 LM3671 Evaluation Board (Rev. F) 2013年 4月 30日
Application note Power Management Design for Applications Processors 2007年 3月 22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

LM3671MF-1.5EV — 採用 SOT23-5 和 5-Bump 微型 SMD 封裝的 2 MHz、600mA 降壓 DC-DC 轉換器

The LM3671 evaluation board is a working demonstration of a step down DC-DC converter. The application note contains information about the evaluation board. The LM3671 step-down DC-DC converter is optimized for powering ultra-low voltage circuits from a single Li-Ion cell or 3 cell NiMH/NiCd (...)

使用指南: PDF
TI.com 無法提供
開發板

LM3671MF-1.8EV — 採用 SOT23-5 和 5-Bump 微型 SMD 封裝的 2 MHz、600mA 降壓 DC-DC 轉換器

The LM3671 evaluation board is a working demonstration of a step down DC-DC converter. The application note contains information about the evaluation board. The LM3671 step-down DC-DC converter is optimized for powering ultra-low voltage circuits from a single Li-Ion cell or 3 cell NiMH/NiCd (...)

使用指南: PDF
TI.com 無法提供
開發板

LM3671TL-1.8EV — 採用 SOT23-5 和 5-Bump 微型 SMD 封裝的 2 MHz、600mA 降壓 DC-DC 轉換器

The LM3671 evaluation board is a working demonstration of a step down DC-DC converter. The application note contains information about the evaluation board. The LM3671 step-down DC-DC converter is optimized for powering ultra-low voltage circuits from a single Li-Ion cell or 3 cell NiMH/NiCd (...)

使用指南: PDF
TI.com 無法提供
模擬型號

LM3671 TINA-TI Transient Reference Design

SNVM065.TSC (121 KB) - TINA-TI Reference Design
下載
模擬型號

LM3671 TINA-TI Transient Spice Model

SNVM066.ZIP (10 KB) - TINA-TI Spice Model
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參考設計

TIDA-00133 — 適用於車用百萬像素 CMOS 攝影機的未壓縮數位視訊 SerDes (透過同軸電纜傳輸) 參考設計

The TIDA-00133 reference design is a high speed serial video interface to connect a remote automotive camera module to a display or machine vision processing system. It uses TIs FPD-Link III SerDes technology to transmit uncompressed MegaPixel video data, bidirectional control signals and power (...)
Design guide: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
DSBGA (YZR) 5 Ultra Librarian
SOT-23 (DBV) 5 Ultra Librarian
USON (NKH) 6 Ultra Librarian
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  • 鉛塗層/球物料
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  • 認證摘要
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