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DC/DC 轉換器

LM3676

現行

具模式控制的 2MHz、600mA 降壓 DC-DC 控制器

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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，但針腳輸出與所比較的裝置不同。
TPS62860 現行 具有 I2C/VSEL 介面的 1.75 V 至 5.5 V 輸入、0.6 A 超低 IQ 降壓轉換器 Smaller solution size and low quiescent current with I2C/VSEL interface

LM3676

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 0.6 Vin (max) (V) 5.5 Vin (min) (V) 2.9 Vout (max) (V) 3.3 Vout (min) (V) 1.1 Features Enable, Forced PWM, Light Load Efficiency, Light load efficiency, Synchronous Rectification Control mode Voltage mode Operating temperature range (°C) -30 to 85 Iq (typ) (A) 0.000016 Duty cycle (max) (%) 100
Rating Catalog Topology Buck Iout (max) (A) 0.6 Vin (max) (V) 5.5 Vin (min) (V) 2.9 Vout (max) (V) 3.3 Vout (min) (V) 1.1 Features Enable, Forced PWM, Light Load Efficiency, Light load efficiency, Synchronous Rectification Control mode Voltage mode Operating temperature range (°C) -30 to 85 Iq (typ) (A) 0.000016 Duty cycle (max) (%) 100
WSON (NGQ) 8 9 mm² (3 mm × 3 mm)
  • 16µA Typical Quiescent Current
  • 600mA Maximum Load Capability
  • 2MHz Typical PWM Fixed Switching Frequency
  • Automatic PFM/PWM Mode Switching or Forced PWM Mode
  • Available in Fixed Output Voltages and Adjustable Version
  • 8-Lead Non-Pullback WSON Package
  • Internal Synchronous Rectification for High Efficiency
  • Internal Soft Start
  • 0.01µA 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

All trademarks are the property of their respective owners.

  • 16µA Typical Quiescent Current
  • 600mA Maximum Load Capability
  • 2MHz Typical PWM Fixed Switching Frequency
  • Automatic PFM/PWM Mode Switching or Forced PWM Mode
  • Available in Fixed Output Voltages and Adjustable Version
  • 8-Lead Non-Pullback WSON Package
  • Internal Synchronous Rectification for High Efficiency
  • Internal Soft Start
  • 0.01µA 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

All trademarks are the property of their respective owners.

The LM3676 step-down DC-DC converter is optimized for powering low voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.9V to 5.5V. It provides up to 600mA 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.

The LM3676 has a mode-control pin that allows the user to select continuous Pulse Width Modulation (PWM) mode over the complete load range or an intelligent PFM-PWM mode that changes modes depending on the load. PWM mode offers superior efficiency under high load conditions (>100mA) and the lowest output noise performance. In Auto mode, PFM-PWM, hysteretic PFM extends the battery life through reduction of the quiescent current to 16µA (typ.) during light loads and system standby.

The LM3676 is available in a 8-lead non-pullback WSON package in leaded (PB) and lead-free (NO PB) versions. A high switching frequency of 2 MHz (typ) allows use of tiny surface-mount components, an inductor and two ceramic capacitors.

The LM3676 step-down DC-DC converter is optimized for powering low voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.9V to 5.5V. It provides up to 600mA 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.

The LM3676 has a mode-control pin that allows the user to select continuous Pulse Width Modulation (PWM) mode over the complete load range or an intelligent PFM-PWM mode that changes modes depending on the load. PWM mode offers superior efficiency under high load conditions (>100mA) and the lowest output noise performance. In Auto mode, PFM-PWM, hysteretic PFM extends the battery life through reduction of the quiescent current to 16µA (typ.) during light loads and system standby.

The LM3676 is available in a 8-lead non-pullback WSON package in leaded (PB) and lead-free (NO PB) versions. A high switching frequency of 2 MHz (typ) allows use of tiny surface-mount components, an inductor and two ceramic capacitors.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 LM3676 2MHz, 600mA Step-Down DC-DC Converter with Mode Control datasheet (Rev. C) 2013/5/2

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參考設計

TIDA-00162 — 適用於車用環景顯示系統的多攝影機、視訊介面及控制解決方案

TIDA-00162 針對汽車應用環景系統整合完整的攝影機模組、視訊介面與控制功能。此參考設計包括四個 1Mp 攝影機 (OmniVision OV10635)、四個序列器 + 電源板，以及一個具有 6 個解序列器 + 電源的子板。子板上提供便捷的 FMC 連接器，可將參考設計連接至 FPGA 或 MCU 電路板以進行視訊處理。使用 DS90UB913A-Q1 序列器和 DS90UB914A-Q1 解串器的優點是可與 OmniVision 的攝影機模組無縫介接，讓您透過單一同軸電纜傳輸高速數據、雙向控制和電源。

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