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
视频
发布日期: 2019-05-01
| 更新日期: 2024-03-26

