NCP1423:400 mA Sync-Rect PFM Boost Converter with Ring-Killer
NCP1423 is a monolithic micropower high frequency step-up switching converter IC specially designed for battery operated hand-held electronic products up to 400mA loading. It integrates Synchronous Rectifier for improving efficiency as well as eliminating the external Schottky Diode. High switching frequency (up to 600 KHz) allows low profile inductor and output capacitor being used. When the IC is disabled, internal conduction path from LX or BAT to OUT is blocked, OUT pin is isolated from the battery. This achieves True-Cutoff. Ring-Killer is also integrated to eliminate the high frequency ringing in discontinuous conduction mode. Low-Battery Detector, Cycle-by-Cycle Current Limit, Overvoltage-Protection and Thermal Shutdown provide value-added features for various battery operated application. With all these functions ON, the quiescent supply current is only 9.0uA. This device is available in compact Micro-10 package
技术特性
- High Switching Frequency, up to 600 kHz
- Low Quiescent Current of 9.0 uA
- Low Battery Detector
- 0.8 V Startup at No Load Guaranteed
- Ring-Killer for Discontinuous Conduction Mode
- Thermal Shutdown
- 1.2 A Cycle by Cycle Current Limit
- Output Current up to 400 mA @ VOUT = 3.3 V, 200 mA @ VOUT = 1.8 V
- Overvoltage Protection
- Low Profile and Minimum External Part
- Open Drain Low-Battery Detector Output
- Compact Micro-10 Package
|
应用
- Wireless Optical Mouse
- Wireless Headsets
- Internet Audio Players
- Personal Digital Assistants (PDAs)
- Handheld Instruments
- Conversion from one/two NiMH or NiCd cells to 1.8 V / 3.3 V
封装图 PACKAGE DIMENSIONS
|
评估板信息
| 评估板 |
状况 |
无铅(Pb-free) |
简短说明 |
| NCP1423EVB |
Active |
|
NCP1423 400 mA DC-DC 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 |
| NCP1423DMR2G |
Active |
|
400 mA Sync-Rect PFM Boost Converter with Ring-Killer |
Micro10 |
846B |
1 |
Tape and Reel |
4000 |
$0.6 |
| NCP1423DMR2 |
Last Shipments |
|
400 mA Sync-Rect PFM Boost Converter with Ring-Killer |
Micro10 |
846B |
1 |
Tape and Reel |
4000 |
|
数据资料DataSheet下载
