NCP1252: Current Mode PWM Controller for Forward and Flyback Applications
The NCP1252 controller offers everything needed to build cost effective and reliable ac-dc switching supplies dedicated to ATX power supplies or any forward application. Thanks to the use of an internally fixed timer, NCP1252 detects an output overload without relying on the auxiliary Vcc. A Brown-Out input offers protection against low input voltages and improves the converter safety. Finally, the SOIC-8 package saves PCB space and represents a solution of choice in cost sensitive project.
技术特性
- Peak Current Mode Control
- Adjustable Switching Frequency up to 500 kHz
- Jittering Frequency ±5% of the Switching Frequency
- Latched Primary Over Current Protection with 10 ms Fixed Delay
- Delayed Operation Upon Start−up via an Internal Fixed Timer
- Adjustable Soft−start Timer
- Auto−recovery Brown−Out Detection
- UC384X−like UVLO Thresholds
- Vcc Range from 9 V to 28 V with Auto−recovery UVLO
- Internal 160 ns Leading Edge Blanking
- Adjustable Internal Ramp Compensation
- +500 mA / –800 mA Source / Sink Capability
- Maximum 50% Duty Cycle: A Version
- Maximum 80% Duty Cycle: B Version
- Maximum 65% Duty Cycle: C Version
- Ready for Updated No Load Regulation Specifications
- SOIC−8 and PDIP−8 Packages
- These are Pb−Free Devices
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应用
- Power supplies for PC silver boxes
- Ac-dc adapter converter
- Game Adapter
- Flyback and Forward Application
终端产品
封装图 PACKAGE DIMENSIONS
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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 |
NCP1252ADR2G |
Active |
|
Current Mode PWM Controller for Forward and Flyback Applications |
SOIC-8 |
751-07 |
1 |
Tape and Reel |
2500 |
$0.32 |
NCP1252APG |
Active |
|
Current Mode PWM Controller for Forward and Flyback Applications |
PDIP-8 |
626-05 |
|
Tube |
50 |
$0.34 |
NCP1252BDR2G |
Active |
|
Current Mode PWM Controller for Forward and Flyback Applications |
SOIC-8 |
751-07 |
1 |
Tape and Reel |
2500 |
$0.32 |
NCP1252CDR2G |
Active |
|
Current Mode PWM Controller for Forward and Flyback Applications |
SOIC-8 |
751-07 |
1 |
Tape and Reel |
2500 |
$0.32 |
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