NCP1271: Soft-Skip Current Mode Standby PWM Controller with Adjustable Skip Level and External Latch
The NCP1271 represents a new, pin to pin compatible, generation of the successful 7 pin current mode NCP12XX product series. The controller allows for excellent stand by power consumption by use of its adjustable Soft Skip mode and integrated high voltage startup FET. This proprietary Soft Skip also dramatically reduces the risk of acoustic noise. This allows the use of inexpensive transformers and capacitors in the clamping network. Internal frequency jittering, ramp compensation, timer based fault detection and a latch input make this controller an excellent candidate for converters where ruggedness and component cost are the key constraints.
技术特性
- Fixed−Frequency Current−Mode Operation with Ramp
Compensation and Skip Cycle in Standby Condition
- Timer−Based Fault Protection for Improved Overload Detection
- “Soft−Skip Mode” Technique for Optimal Noise Control in Standby
- Internal High−Voltage Startup Current Source for Lossless Startup
- 5% Current Limit Accuracy over the Full Temperature Range
- Adjustable Skip Level
- Internal Latch for Easy Implementation of Overvoltage and
Overtemperature Protection
- Frequency Jittering for Softened EMI Signature
- +500 mA/−800 mA Peak Current Drive Capability
- Sub−100 mW Standby Power can be Achieved
- Pin−to−Pin Compatible with the Existing NCP120X Series
- This is a Pb−Free Device
应用
- ACDC Adapters
- Consumer Electronic Power Supplies
|
终端产品
- Offline Battery Chargers
- STB, DVD, DVDR
- Notebooks
- LCD Monitors
- Printers
封装图 PACKAGE DIMENSIONS
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评估板信息
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 |
| NCP1271D100R2G |
Active |
|
Soft-Skip Current Mode Standby PWM Controller with Adjustable Skip Level and External Latch |
SOIC-8 |
751U |
1 |
Tape and Reel |
2500 |
$0.32 |
| NCP1271D65R2G |
Active |
|
Soft-Skip Current Mode Standby PWM Controller with Adjustable Skip Level and External Latch |
SOIC-8 |
751U |
1 |
Tape and Reel |
2500 |
$0.32 |
| NCP1271P100G |
Active |
|
Soft-Skip Current Mode Standby PWM Controller with Adjustable Skip Level and External Latch |
PDIP-8 |
626B |
|
Tube |
1000 |
$0.46 |
| NCP1271P65G |
Active |
|
Soft-Skip Current Mode Standby PWM Controller with Adjustable Skip Level and External Latch |
PDIP-8 |
626B |
|
Tube |
1000 |
$0.46 |
数据资料DataSheet下载
