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

LM3370

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具有动态电压调节功能的双路同步降压 DC-DC 转换器

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数据表

LM3370

正在供货
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产品详情

Iout (max) (A) 0.6 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Topology Buck Type Converter Switching frequency (min) (kHz) 1500 Switching frequency (max) (kHz) 2400 Features Adaptive/Dynamic Voltage Scaling, Enable, I2C/PMBus, Light Load Efficiency, Light load efficiency, Spread Spectrum, Spread Spectrum Clocking (SSC), Spread spectrum clocking, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1 Vout (max) (V) 3.3 Rating Catalog Operating temperature range (°C) -30 to 85 Iq (typ) (A) 0.0006
Iout (max) (A) 0.6 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Topology Buck Type Converter Switching frequency (min) (kHz) 1500 Switching frequency (max) (kHz) 2400 Features Adaptive/Dynamic Voltage Scaling, Enable, I2C/PMBus, Light Load Efficiency, Light load efficiency, Spread Spectrum, Spread Spectrum Clocking (SSC), Spread spectrum clocking, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1 Vout (max) (V) 3.3 Rating Catalog Operating temperature range (°C) -30 to 85 Iq (typ) (A) 0.0006
DSBGA (YZR) 20 6.1875 mm² 2.75 x 2.25 WSON (NHR) 16 20 mm² 5 x 4
  • I2C-compatible interface
    • VOUT1 = 1V to 2V in 50 mV Steps
    • VOUT2 = 1.8V to 3.3V in 100 mV Steps
    • Automatic PFM/PWM Mode Switching and Forced PWM Mode for Low Noise Operation
    • Spread Spectrum Capability Using I2C
  • 600mA Load Per Channel
  • 2MHz PWM Fixed Switching Frequency (Typ.)
  • The Bucks Operate 180° Out-of-Phase Timing Offset for Noise and Input Surge Current Abatement
  • Internal Synchronous Rectification for High Efficiency
  • Internal Soft Start
  • Power-on-Reset Function for Both Outputs
  • 2.7V ≤ VIN ≤ 5.5V
  • Operates from a Single Li-Ion Cell or 3 Cell NiMH/NiCd Batteries and 3.3V/5.5V Fixed Rails
  • 2.2µH Inductor, 4.7µF Input and 10µF Output Capacitor Per Channel
  • 16-lead WSON Package (4 mm x 5 mm x 0.8 mm)
  • 20-Bump DSBGA Package (3.0 mm x 2.0 mm x 0.6 mm)

All trademarks are the property of their respective owners.

  • I2C-compatible interface
    • VOUT1 = 1V to 2V in 50 mV Steps
    • VOUT2 = 1.8V to 3.3V in 100 mV Steps
    • Automatic PFM/PWM Mode Switching and Forced PWM Mode for Low Noise Operation
    • Spread Spectrum Capability Using I2C
  • 600mA Load Per Channel
  • 2MHz PWM Fixed Switching Frequency (Typ.)
  • The Bucks Operate 180° Out-of-Phase Timing Offset for Noise and Input Surge Current Abatement
  • Internal Synchronous Rectification for High Efficiency
  • Internal Soft Start
  • Power-on-Reset Function for Both Outputs
  • 2.7V ≤ VIN ≤ 5.5V
  • Operates from a Single Li-Ion Cell or 3 Cell NiMH/NiCd Batteries and 3.3V/5.5V Fixed Rails
  • 2.2µH Inductor, 4.7µF Input and 10µF Output Capacitor Per Channel
  • 16-lead WSON Package (4 mm x 5 mm x 0.8 mm)
  • 20-Bump DSBGA Package (3.0 mm x 2.0 mm x 0.6 mm)

All trademarks are the property of their respective owners.

The LM3370 is a dual step-down DC-DC converter optimized for powering ultra-low voltage circuits from a single Li-Ion battery and input rail ranging from 2.7V to 5.5V. It provides two outputs with 600mA load per channel. The output voltage range varies from 1V to 3.3V and can be dynamically controlled using the I2C-compatible interface. This dynamic voltage scaling function allows processors to achieve maximum performance at the lowest power level. The I2C-compatible interface can also be used to control auto PFM-PWM/PWM mode selection and other performance enhancing features.

The LM3370 offers superior features and performance for portable systems with complex power management requirements. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system efficiency. Internal synchronous rectification enhances the converter efficiency without the use of further external devices.

There is a power-on-reset function that monitors the level of the output voltage to avoid unexpected power losses. The independent enable pin for each output allows for simple and effective power sequencing.

LM3370 is available in a 4mm by 5mm 16-lead non-pullback WSON and a 20-bump DSBGA, 3.0mm x 2.0mm x 0.6mm, package. A high switching frequency—2 MHz (typ)—allows use of tiny surface-mount components including a 2.2µH inductor.

Default fixed voltages for the 2 output voltages combination can be customized to fit system requirements by contacting Texas Instruments.

The LM3370 is a dual step-down DC-DC converter optimized for powering ultra-low voltage circuits from a single Li-Ion battery and input rail ranging from 2.7V to 5.5V. It provides two outputs with 600mA load per channel. The output voltage range varies from 1V to 3.3V and can be dynamically controlled using the I2C-compatible interface. This dynamic voltage scaling function allows processors to achieve maximum performance at the lowest power level. The I2C-compatible interface can also be used to control auto PFM-PWM/PWM mode selection and other performance enhancing features.

The LM3370 offers superior features and performance for portable systems with complex power management requirements. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system efficiency. Internal synchronous rectification enhances the converter efficiency without the use of further external devices.

There is a power-on-reset function that monitors the level of the output voltage to avoid unexpected power losses. The independent enable pin for each output allows for simple and effective power sequencing.

LM3370 is available in a 4mm by 5mm 16-lead non-pullback WSON and a 20-bump DSBGA, 3.0mm x 2.0mm x 0.6mm, package. A high switching frequency—2 MHz (typ)—allows use of tiny surface-mount components including a 2.2µH inductor.

Default fixed voltages for the 2 output voltages combination can be customized to fit system requirements by contacting Texas Instruments.
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类型 标题 下载最新的英语版本 日期
* 数据表 LM3370 Dual Synch Step-Down DC-DC Converter w/Dyn Volt Scaling Func 数据表 (Rev. N) 2013年 5月 2日
应用手册 Enhancing Bit-Flip Recovery and PMU Design For Defense/Industrial Applications 2014年 8月 14日
EVM 用户指南 AN-1428 LM3370 Evaluation Board (Rev. D) 2013年 4月 30日
用户指南 AN-1840 USB I 2 C Interface Board Reference Manual (Rev. A) 2013年 4月 30日
应用手册 Application Note 1428 LM3370 Evaluation Board (cn) 2008年 1月 9日
应用手册 FPGA所需的电源供应：深入分析 英语版 2007年 3月 22日
应用手册 Implementing Single-Chip FPGA Power Solutions 2007年 3月 21日

设计和开发

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封装 引脚 下载
DSBGA (YZR) 20 查看选项
WSON (NHR) 16 查看选项
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订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

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