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Semtech SC195F
3.5MHz 500mA 同步降压 DC-DC 稳压器
The SC195F is a high efficiency, 500mA step down regulator designed to operate with an input voltage range of 2.9V to 5.5 V. The input voltage range makes it ideal for battery operated applications with space limitations. The SC195F operates at a fixed 3.5MHz switching frequency in normal PWM (Pulse-Width Modulation) mode. The SC195F also includes fifteen programmable output voltage settings that can be selected using the four control pins, eliminating the need for external feedback resistors. The output voltage can be fixed to a single setting or dynamically switched between different levels. Pulling all four control pins low disables the output.
Overview
Features
- 输入电压：2.9 V 至 5.5V
- 输出电压：0.8 V 至 3.3 V
- 输出电流：500 mA
- 效率高达 94%
- 15 档可编程输出电压
- 快速瞬态响应
- 振荡频率：3.5 MHz
- 100% 的占空比
- 静态电流：4.8 mA（典型值）
- 关断电流：0.1μA（典型值）
- 内置软启动
- 过压保护
- 限流和短路保护
- 过温保护
- 输入欠压闭锁
- 浮动控制引脚保护
- MLPQ-UT8 1.5 x 1.5 x 0.6 (mm) 封装
- 无铅、无卤素，且符合 RoHS/WEEE 标准
Applications
- Â 智能手机和蜂窝电话
- MP3/个人媒体播放器
- Packaging
- SC195FULTRT：无铅、无卤素且符合 RoHS/WEEE 标准，3000 颗
- SC195FEVB：Order Codes
- Â 智能手机和蜂窝电话
- MP3/个人媒体播放器
Diagrams and Specs
Key Specifications
Block Diagram
Click diagram to enlarge
Datasheets and Resources
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