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
发布日期: 2013-04-04
| 更新日期: 2022-03-11
