参数资料
型号: NCP1252ADR2G
厂商: ON Semiconductor
文件页数: 1/18页
文件大小: 0K
描述: IC REG CTRLR FLYBK ISO PWM 8SOIC
标准包装: 2,500
PWM 型: 电流模式
输出数: 1
频率 - 最大: 500kHz
占空比: 50%
电源电压: 9 V ~ 28 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -25°C ~ 125°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
其它名称: NCP1252ADR2G-ND
NCP1252ADR2GOSTR
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. 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 a SOIC ? 8 package saves
PCB space and represents a solution of choice in cost sensitive project.
http://onsemi.com
OFFLINE CONTROLLER
Features
? 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
8
1
8
1
SOIC ? 8 PDIP ? 8
CASE 751 CASE 626
SUFFIX D SUFFIX P
PIN CONNECTIONS
FB 1 SS
BO V CC
CS DRV
RT GND
(Top View)
MARKING DIAGRAMS
1252x 1252AP
ALYWX AWL
G YYWWG
Typical Applications
? Power Supplies for PC Silver Boxes, Games Adapter...
? Flyback and Forward Converter
x
A
L, WL
Y, YY
W, WW
G or G
= A, B or C Version
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb ? Free Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 16 of this data sheet.
? Semiconductor Components Industries, LLC, 2013
August, 2013 ? Rev. 5
1
Publication Order Number:
NCP1252/D
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