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LM26400Y

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双路 2A、500kHz 宽输入范围降压稳压器

产品详情

Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 20 Vin (min) (V) 3 Vout (max) (V) 16 Vout (min) (V) 0.6 Features Enable, Light Load Efficiency, Power good, Pre-Bias Start-Up Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.004 Duty cycle (max) (%) 96
Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 20 Vin (min) (V) 3 Vout (max) (V) 16 Vout (min) (V) 0.6 Features Enable, Light Load Efficiency, Power good, Pre-Bias Start-Up Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.004 Duty cycle (max) (%) 96
HTSSOP (PWP) 16 32 mm² 5 x 6.4 WSON (NHQ) 16 25 mm² 5 x 5
  • Input Voltage Range of 3 V to 20 V
  • Dual 2-A Output
  • Output Voltage Down to 0.6 V
  • Internal Compensation
  • 500-kHz PWM Frequency
  • Separate Enable Pins
  • Separate Soft-Start Pins
  • Frequency Foldback Protection
  • 175-mΩ NMOS Switch
  • Integrated Bootstrap Diodes
  • Overcurrent Protection
  • HTSSOP and WSON Packages
  • Thermal Shutdown
  • Input Voltage Range of 3 V to 20 V
  • Dual 2-A Output
  • Output Voltage Down to 0.6 V
  • Internal Compensation
  • 500-kHz PWM Frequency
  • Separate Enable Pins
  • Separate Soft-Start Pins
  • Frequency Foldback Protection
  • 175-mΩ NMOS Switch
  • Integrated Bootstrap Diodes
  • Overcurrent Protection
  • HTSSOP and WSON Packages
  • Thermal Shutdown

The LM26400Y device is a monolithic, two-output fixed-frequency PWM step-down DC-DC regulator, in a 16-pin WSON or thermally-enhanced HTSSOP package. With a minimum number of external components and internal loop compensation, the LM26400Y is easy to use.

The ability to drive 2-A loads with an internal 175-mΩ NMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in a high-power density design. The world class control circuitry allows for an ON-time as low as 40 ns, thus supporting high-frequency conversion over the entire input range of 3 V to 20 V and down to an output voltage of only 0.6 V. The LM26400Y utilizes peak current-mode control and internal compensation to provide high-performance regulation over a wide range of line and load conditions. Switching frequency is internally set to 500 kHz, optimal for a broad range of applications in terms of size versus thermal tradeoffs.

Given a nonsynchronous architecture, efficiencies above 90% are easy to achieve. External shutdown is included, enabling separate turnon and turnoff of the two channels. Additional features include programmable soft-start circuitry to reduce inrush current, pulse-by-pulse current limit and frequency foldback, integrated bootstrap structure, and thermal shutdown.

The LM26400Y device is a monolithic, two-output fixed-frequency PWM step-down DC-DC regulator, in a 16-pin WSON or thermally-enhanced HTSSOP package. With a minimum number of external components and internal loop compensation, the LM26400Y is easy to use.

The ability to drive 2-A loads with an internal 175-mΩ NMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in a high-power density design. The world class control circuitry allows for an ON-time as low as 40 ns, thus supporting high-frequency conversion over the entire input range of 3 V to 20 V and down to an output voltage of only 0.6 V. The LM26400Y utilizes peak current-mode control and internal compensation to provide high-performance regulation over a wide range of line and load conditions. Switching frequency is internally set to 500 kHz, optimal for a broad range of applications in terms of size versus thermal tradeoffs.

Given a nonsynchronous architecture, efficiencies above 90% are easy to achieve. External shutdown is included, enabling separate turnon and turnoff of the two channels. Additional features include programmable soft-start circuitry to reduce inrush current, pulse-by-pulse current limit and frequency foldback, integrated bootstrap structure, and thermal shutdown.

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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 LM26400Y Dual 2-A, 500-kHz Wide Input Range Buck Regulator 数据表 (Rev. D) PDF | HTML 2015年 10月 13日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
白皮书 Powering Multi-Rail Systems Using the LM26400Y Regulator 2008年 1月 28日
应用手册 Application Note 1600 LM26400Y Demonstration Board (cn) 最新英语版本 (Rev.B) PDF | HTML 2007年 3月 9日

设计与开发

如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。

评估板

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用户指南: PDF
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评估板

LM26400YEVAL — 双路 2A、500kHz 宽输入范围降压稳压器

The LM26400Y demonstration board was designed to provide two 2A outputs at 1.2V and 2.5V respectively. It uses the ETSSOP package option of the LM26400Y for easier probing. The design emphasizes on the compactness of the LM26400Y PCB layout and is thermally optimized. The total solution size is (...)

用户指南: PDF
最新英语版本 (Rev.B): PDF
TI.com 上无现货
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该参考设计介绍了一款宽带射频接收器,该接收器采用 4GSPS 模数转换器 (ADC) 并具有一个 8GHz 直流耦合全差分放大器前端。放大器前端提供信号增益,并且能够捕获下行到直流的信号,而平衡-非平衡变压器耦合输入则无法做到这一点。

设计指南: PDF
原理图: PDF
参考设计

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设计指南: PDF
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参考设计

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设计指南: PDF
原理图: PDF
封装 引脚 CAD 符号、封装和 3D 模型
HTSSOP (PWP) 16 Ultra Librarian
WSON (NHQ) 16 Ultra Librarian

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

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