Texas Instruments LM25017/8/9 48V降压稳压器

德州仪器 LM25017 / LM25018 / LM25019是48V同步降压稳压器,集成了高边和低边MOSFET(金属-氧化层半导体场效晶体管)。TI LM25017 / LM25018 / LM25019中采用的恒定导通时间(COT)控制架构无需环路补偿,提供出色的负载瞬态响应,并可实现极低的降压比率。导通时间与输入电压成反比,因而在整个输入电压范围上,频率几乎恒定。高压启动稳压器为集成电路内部工作、集成栅极驱动器提供偏置功率。峰值电流极限电路提供超负荷保护。欠压闭锁(UVLO)电路允许对输入欠压阈值和迟滞进行单独设置。其他保护特性还有热关断和偏压电源欠压闭锁(VCC UVLO)。

特性

  • Wide 9V to 48V Input Range
  • Integrated 48V, High and Low Side Switches
  • No Schottky Required
  • Constant On-time Control
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Nearly Constant Operating Frequency
  • Intelligent Peak Current Limit
  • Adjustable Output Voltage from 1.225V
  • Precision 2% Feedback Reference
  • Frequency Adjustable to 1MHz
  • Adjustable Undervoltage Lockout
  • Remote Shutdown
  • Thermal Shutdown

应用

  • Industrial Equipment
  • Smart Power Meters
  • Telecommunication Systems
  • Isolated Bias Supply

Typical Application

Texas Instruments LM25017/8/9 48V降压稳压器
发布日期: 2013-04-04 | 更新日期: 2022-03-11