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LM3678

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用于手持设备应用的高性能、微型 1.5A 降压直流/直流转换器

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open-in-new 比较替代产品
功能与比较器件相同但引脚有所不同。
TPS62825 正在供货 采用 1.5mm x 1.5mm QFN 封装、具有 1% 精度的 2.4V 至 5.5V 输入、2A 降压转换器 Smaller solution size with higher output voltage range 0.6 V to 4 V

LM3678

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产品详情

Rating Catalog Topology Buck Iout (max) (A) 1.5 Vin (max) (V) 5.5 Vin (min) (V) 2.5 Vout (max) (V) 1.2 Vout (min) (V) 0.8 Features Adaptive/Dynamic Voltage Scaling, Enable, Power good, Synchronous Rectification Control mode Voltage mode Operating temperature range (°C) -30 to 85 Iq (typ) (A) 0.0004 Duty cycle (max) (%) 100
Rating Catalog Topology Buck Iout (max) (A) 1.5 Vin (max) (V) 5.5 Vin (min) (V) 2.5 Vout (max) (V) 1.2 Vout (min) (V) 0.8 Features Adaptive/Dynamic Voltage Scaling, Enable, Power good, Synchronous Rectification Control mode Voltage mode Operating temperature range (°C) -30 to 85 Iq (typ) (A) 0.0004 Duty cycle (max) (%) 100
WSON (DSC) 10 9 mm² (3 mm × 3 mm)
  • VOUT = 0.8 V or 1.2 V
  • VIN = 2.5 V to 5.5 V
  • 1.5-A Maximum Load Capability
  • 3.3-MHz (Typical) PWM Fixed Switching Frequency Allows Use of 1-µH Inductor
  • ±3% DC Output Voltage Precision
  • 0.01-µA (Typical) Shutdown Current
  • Internal Synchronous Rectification for High Efficiency
  • Internal Soft Start
  • Current Overload and Thermal Shutdown Protection

All trademarks are the property of their respective owners.

  • VOUT = 0.8 V or 1.2 V
  • VIN = 2.5 V to 5.5 V
  • 1.5-A Maximum Load Capability
  • 3.3-MHz (Typical) PWM Fixed Switching Frequency Allows Use of 1-µH Inductor
  • ±3% DC Output Voltage Precision
  • 0.01-µA (Typical) Shutdown Current
  • Internal Synchronous Rectification for High Efficiency
  • Internal Soft Start
  • Current Overload and Thermal Shutdown Protection

All trademarks are the property of their respective owners.

The LM3678 step-down DC-DC converter is optimized for powering low-voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.5 V to 5.5 V. It provides up to 1.5-A load current, over the entire input voltage range. LM3678 offers a 0.8V or 1.2V option. One of the pair of voltages is set through the VSELECT pin.

LM3678 operates in PWM mode with a fixed frequency of 3.3 MHz. 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).

The LM3678 is available in a 3mm x 3mm DSC-10 package. A high switching frequency of 3.3 MHz (typical) allows use of tiny surface-mount components. Only three external surface-mount components, an inductor and two ceramic capacitors, are required (solution size less than 33 mm2). For voltages other than the voltage shown, contact TI or your distributor.

The LM3678 step-down DC-DC converter is optimized for powering low-voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.5 V to 5.5 V. It provides up to 1.5-A load current, over the entire input voltage range. LM3678 offers a 0.8V or 1.2V option. One of the pair of voltages is set through the VSELECT pin.

LM3678 operates in PWM mode with a fixed frequency of 3.3 MHz. 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).

The LM3678 is available in a 3mm x 3mm DSC-10 package. A high switching frequency of 3.3 MHz (typical) allows use of tiny surface-mount components. Only three external surface-mount components, an inductor and two ceramic capacitors, are required (solution size less than 33 mm2). For voltages other than the voltage shown, contact TI or your distributor.
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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 H-Perform, Mini 1.5-A Step-Dwn DC-DC Cnvrtr for Handheld Apps 数据表 (Rev. C) 2013-5-2
选择指南 电源管理指南 2018 2018-7-31

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封装 引脚 CAD 符号、封装和 3D 模型
WSON (DSC) 10 Ultra Librarian
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