STMicroelectronics L6986H同步降压开关稳压器

STMicroelectronics L6986H同步降压开关稳压器提供高达2A DC电流,输出电压调节范围为0.85V至VIN。该器件采用P通道MOSFET高侧功率元件,因此可实现100%占空比运行。宽输入电压范围符合5V、12V和24V电源规范。

Pulse-by-pulse current sensing on both power elements implements effective constant current protection on the primary side. At the same time, the second output is protected against short-circuit events because of the primary reverse current limit. Thanks to the P-channel MOSFET high-side power element, the device features a 100% duty cycle operation. The wide input voltage range meets the specifications for the 5V, 12V, and 24V power supplies.

特性

  • 输出电流:2A DC
  • 工作输入电压:4V至38V
  • 低功耗模式或低噪声模式
  • IQ:30µA(轻负载,LCM VOUT = 3.3V)
  • IQ-SHTDWN:8µA
  • 可调fSW (250kHz - 2MHz)
  • 固定输出电压(3.3V和5V)或0.85V至VIN的可调节输出电压
  • 内置输出电压监控器
  • 同步
  • 可调软启动时间
  • 内部电流限制
  • 过压保护
  • 输出电压排序
  • 峰值电流模式架构
  • RDS(on)HS = 180mΩ,RDS(on)LS = 150mΩ
  • 热关断

规范

  • 2A DC output current
  • 4V to 38V operating input voltage
  • 30µA IQ at light-load (LCM VOUT = 3.3V)
  • Adjustable fSW (250kHz - 2MHz)
  • Fixed output voltage (3.3V and 5V) or adjustable from 0.85V to VIN
  • RDS(on)HS = 180mΩ, RDS(on)LS = 150mΩ
  • L6981I
  • 1.9A typical sink peak primary current capability
  • 300ns blanking time
  • 8µA IQ-SHTDWN

应用

  • 设计用于12V和24V总线
  • 可编程逻辑控制器 (PLC)
  • 分散的智能节点
  • 传感器和低噪声应用 (LNM)

框图

框图 - STMicroelectronics L6986H同步降压开关稳压器

视频

发布日期: 2019-05-01 | 更新日期: 2024-03-26