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AC/DC & DC/DC converters (integrated FET)

LM3676

現行

具模式控制的 2MHz、600mA 降壓 DC-DC 控制器

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TPS62860 現行 具 I2C/VSEL 介面的 1.75-V 至 5.5-V ， 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

Iout (max) (A) 0.6 Vin (min) (V) 2.9 Vin (max) (V) 5.5 Topology Buck Type Converter Switching frequency (min) (kHz) 1600 Switching frequency (max) (kHz) 2600 Features Enable, Forced PWM, Light Load Efficiency, Light load efficiency, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1.1 Vout (max) (V) 3.3 Rating Catalog Operating temperature range (°C) -30 to 85 Iq (typ) (A) 0.000016
Iout (max) (A) 0.6 Vin (min) (V) 2.9 Vin (max) (V) 5.5 Topology Buck Type Converter Switching frequency (min) (kHz) 1600 Switching frequency (max) (kHz) 2600 Features Enable, Forced PWM, Light Load Efficiency, Light load efficiency, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1.1 Vout (max) (V) 3.3 Rating Catalog Operating temperature range (°C) -30 to 85 Iq (typ) (A) 0.000016
WSON (NGQ) 8 9 mm² 3 x 3
  • 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

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  • 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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類型 標題 日期
* Data sheet LM3676 2MHz, 600mA Step-Down DC-DC Converter with Mode Control datasheet (Rev. C) 2013年 5月 2日
EVM User's guide AN-1536 LM3676 Evaluation Board (Rev. D) 2013年 4月 30日

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參考設計

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