NCP1521B:1.5 MHz , 600 mA Buck Converter
The NCP1521B step-down PWM DC-DC converter is optimized for portable applications powered from one cell Li-ion or three cell Alkaline/NiCd/NiMH batteries. The part is available in adjustable output voltage versions ranging from 0.9 V to 3.3 V. It uses synchronous rectification to increase efficiency and reduce external part count. The device also has a built-in 1.5 MHz (nominal) oscillator which reduces component size by allowing smaller inductors and capacitors. Automatic switching PWM/PFM mode offers improved system efficiency. Additional features include integrated soft-start, cycle-by-cycle current limiting and thermal shutdown protection. The NCP1521B is available in space saving, low profile TSOP5 and UDFN6 packages.
技术特性
- 96% efficiency, 30 uA quiescent current, 0.3 uA shutdown current
- Extends battery life and 'play-time'
- 1.5 MHz switching frequency
- Allows use of smaller inductor and capacitor
- Auto-switching between PWM and PFM mode at light load conditions
- Low power consumption at light loading
- Adjustable output voltage from 0.9V to 3.3V
- Best in class Low Ripple even in PFM mode
终端产品
- Cellular phones, smart phones, and PDAs
- MP3 players and portable audio systems
- Digital still cameras and video cameras
应用
- Power supply for application processor
- Power supply for processor with low core voltage
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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 |
| NCP1521BEVB |
Active |
|
Step Down Converter 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 |
| NCP1521BMUTBG |
Last Shipments |
|
1.5 MHz , 600 mA Buck Converter |
UDFN-6 |
517AB |
1 |
Tape and Reel |
3000 |
|
| NCP1521BSNT1G |
Active |
|
1.5 MHz , 600 mA Buck Converter |
TSOP-5 / SOT-23-5 |
483 |
1 |
Tape and Reel |
3000 |
$0.21 |
数据资料DataSheet下载
