LM2742

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具有可调节软启动的 2.2V 至 16V 电压模式同步降压控制器

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TPS54KB20 正在供货 4V 至 16V 输入、25A 遥感同步降压转换器 Higher power density integrated FET converter solution for up to 25A output current

产品详情

Vin (min) (V) 2.2 Vin (max) (V) 16 Iout (max) (A) 20 Operating temperature range (°C) -40 to 125 Control mode Voltage mode Topology Buck Rating Catalog Vout (min) (V) 0.6 Vout (max) (V) 13.5 Features Enable, Power good, Synchronous Rectification Iq (typ) (µA) 1500 Duty cycle (max) (%) 90 Number of phases 1
Vin (min) (V) 2.2 Vin (max) (V) 16 Iout (max) (A) 20 Operating temperature range (°C) -40 to 125 Control mode Voltage mode Topology Buck Rating Catalog Vout (min) (V) 0.6 Vout (max) (V) 13.5 Features Enable, Power good, Synchronous Rectification Iq (typ) (µA) 1500 Duty cycle (max) (%) 90 Number of phases 1
TSSOP (PW) 14 32 mm² 5 x 6.4
  • Input Power from 1V to 16V
  • Output Voltage Adjustable down to 0.6V
  • Power Good Flag, Adjustable Soft-start and Output Enable for Easy Power Sequencing
  • Reference Accuracy: 1.5% (0°C–125°C)
  • Current Limit Without Sense Resistor
  • Soft Start
  • Switching Frequency from 50 kHz to 2 MHz
  • 40ns Typical Minimum On-time
  • TSSOP-14 Package

All trademarks are the property of their respective owners.

  • Input Power from 1V to 16V
  • Output Voltage Adjustable down to 0.6V
  • Power Good Flag, Adjustable Soft-start and Output Enable for Easy Power Sequencing
  • Reference Accuracy: 1.5% (0°C–125°C)
  • Current Limit Without Sense Resistor
  • Soft Start
  • Switching Frequency from 50 kHz to 2 MHz
  • 40ns Typical Minimum On-time
  • TSSOP-14 Package

All trademarks are the property of their respective owners.

The LM2742 is a high-speed, synchronous, switching regulator controller. It is intended to control currents of 0.7A to 20A with up to 95% conversion efficiencies. Power up and down sequencing is achieved with the power-good flag, adjustable soft-start and output enable features. The LM2742 operates from a low-current 5V bias and can convert from a 1V to 16V power rail. The part utilizes a fixed-frequency, voltage-mode, PWM control architecture and the switching frequency is adjustable from 50kHz to 2MHz by setting the value of an external resistor. Current limit is achieved by monitoring the voltage drop across the on-resistance of the low-side MOSFET, which enables on-times on the order of 40ns, one of the best in the industry. The wide range of operating frequencies gives the power supply designer the flexibility to fine-tune component size, cost, noise and efficiency. The adaptive, non-overlapping MOSFET gate-drivers and high-side bootstrap structure helps to further maximize efficiency. The high-side power FET drain voltage can be from 1V to 16V and the output voltage is adjustable down to 0.6V.

The LM2742 is a high-speed, synchronous, switching regulator controller. It is intended to control currents of 0.7A to 20A with up to 95% conversion efficiencies. Power up and down sequencing is achieved with the power-good flag, adjustable soft-start and output enable features. The LM2742 operates from a low-current 5V bias and can convert from a 1V to 16V power rail. The part utilizes a fixed-frequency, voltage-mode, PWM control architecture and the switching frequency is adjustable from 50kHz to 2MHz by setting the value of an external resistor. Current limit is achieved by monitoring the voltage drop across the on-resistance of the low-side MOSFET, which enables on-times on the order of 40ns, one of the best in the industry. The wide range of operating frequencies gives the power supply designer the flexibility to fine-tune component size, cost, noise and efficiency. The adaptive, non-overlapping MOSFET gate-drivers and high-side bootstrap structure helps to further maximize efficiency. The high-side power FET drain voltage can be from 1V to 16V and the output voltage is adjustable down to 0.6V.

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类型 标题 下载最新的英语版本 日期
* 数据表 LM2742 N-Chan FET Synch Buck Reg Cntrlr for Low Output Voltages 数据表 (Rev. C) 2013年 3月 28日
用户指南 LM2742 降压控制器评估模块用户指南 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2022年 7月 18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
模拟设计期刊 Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 2016年 7月 21日
应用手册 Automated Frequency Response Analyzer 2013年 10月 9日
应用手册 AN-1603 LM274X Reference Designs (Rev. C) 2013年 5月 1日
应用手册 Current Limit Foldback Improves Short Circuit Protection in LM274X Family (Rev. B) 2013年 4月 23日
应用手册 Optmiz Pwr Cntrlr Dsigns thru Utiliz Freq & Sync, Ext Ref, Trking & Precis EN 2008年 4月 24日
应用手册 Application Note 1603 LM274X Reference Designs (cn) 2007年 12月 6日
应用手册 Power Management Considerations for FPGAs and ASICs 2007年 3月 22日
应用手册 Current Limit Foldback Improves Short Circuit Protection in LM274X Family (cn) 2006年 5月 25日

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TSSOP (PW) 14 Ultra Librarian

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  • 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
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  • 制造厂地点
  • 封装厂地点

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