NCP1597: 2.0 A Synchronous Buck Regulator
The NCP1597A family is a fixed 1 MHz frequency, high-output-current, synchronous PWM converter that integrate low-resistance, high-side P-channel MOSFETs and low-side N-channel MOSFETs. The NCP1597A utilizes current mode control to provide fast transient response and excellent loop stability and supports PFM mode at light load for higher efficiency. It regulates input voltages from 4.0 V to 5.5 V down to an output voltage as low as 0.8 V and is able to supply up to 2.0 A. The NCP1597A has features including fixed internally switching frequency (FSW), and an internal soft-start to limit inrush currents. Using the EN pin, shutdown supply current is reduced to 1 µA maximum. Other features include cycle-by-cycle current limiting; short-circuit protection, power saving mode and thermal shutdown. The NCP1597A is pin to pin compatible to the 1.5A NCP1595A. The NCP1597B offers the same performance in a 10-pin 3x3mm DFN package.
技术特性
- Input voltage range from 4.0 V to 5.5 V
- Typical +5V applications
- Internal 140m / 90m MOSFETs
- High efficiency at full load
- Fixed 1 MHz Switching Frequency
- Reduced output filter component size and value
- Hiccup Mode Short-Circuit Protection
- Reduced heat durring short circuit
- Thermal Shutdown Protection
- Prevents overheating in the application
- Adjustable Output Voltage Down to 0.8 V
- Ability to regulate low output voltages
- PFM Mode at Light Load
- Increased efficiency at light load versus fixed PWM
终端产品
应用
- USB Powered Devices
- Hard Disk Drive (HDD)
- DSP Power
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封装图 PACKAGE DIMENSIONS
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评估板信息
| 评估板 |
状况 |
无铅(Pb-free) |
简短说明 |
| NCP1597AGEVB |
Active |
 |
EVALUATION BOARD |
订购信息 Ordering Information
| 产品 |
状况 |
Compliance |
具体说明 |
封装 |
MSL* |
容器 |
预算价格 (1千个数量的单价） |
| 类型 |
外形 |
类型 |
数量 |
| NCP1597AMNTWG |
Active |
|
2.0 A Synchronous Buck Regulator |
DFN-6 |
506AH |
1 |
Tape and Reel |
3000 |
$0.2667 |
数据资料DataSheet下载
