产品
电源管理
Semtech SC21152
微型 1.2A 同步降压稳压器，带电源正常指示功能
The SC21152 is an ultra high efficiency 1.2A DC/DC buck regulator available in a small MLPD package. These features make the SC21152 perfect for small form factor consumer applications where high efficiency is essential. SC21152 is an Adaptive On-Time 4MHz switching regulator at full load conditions. Under light load conditions it transitions into PFM Power Save Mode and reduces switching frequency thus saving energy. High switching frequency operation allows the use of a very small 0.47μH inductor along with small input and output capacitors to minimize overall circuit size.
Overview
Features
- 输入电压范围：2.3V 至 5.5 V
- 持续输出电流：1.2 A
- 4MHz 开关频率
- 可调输出电压
- 输出电压精度：1%
- 自适应导通时间架构
- 高达 100% 的占空比
- 高达 96% 的峰值效率
- 支持高效轻载运行的节电模式
- 30 mA 至 75 mA 时，效率 > 90%
- 关断电流为 0.1 μA
- 21 μA 静态电流
- 电源正常指示灯
- 预偏置启动保护
- 内置软启动
- 1.5 mm x 2 mm 6 引脚 MLPD 封装
- 符合 WEEE 和 RoHS 标准，且无卤素
Applications
- 平板电脑
- GPS 设备
- 由电池供电的设备
Packaging
- SC21152AULTRC：仅无铅封装。此产品符合 WEEE 和 RoHS 标准且无卤素。3000 颗
- SC21152EVB：评估板
Order Codes
- 平板电脑
- GPS 设备
- 由电池供电的设备
Diagrams and Specs
Key Specifications
Datasheets and Resources
Restricted