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| 型号： | NCP1382DR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 1/25页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM OVP OTP 14SOIC |
| 标准包装： | 2,500 |
| 输出隔离： | 隔离 |
| 频率范围： | 调节 |
| 输入电压： | 9 V ~ 20 V |
| 工作温度： | 0°C ~ 125°C |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 14-SOICN |
| 包装： | 带卷 (TR) |
NCP1381, NCP1382
Low-- Standby High
Performance PWM
Controller
Housed in a SO--14 package, the NCP1381/82 includes everything
needed to build rugged and efficient Quasi--Resonant (QR) Switching
Power Supplies. When powered by a front--end Power Factor
Correction circuitry, the NCP1381/82 automatically disconnects the
PFC controller in low output loading conditions (with an adjustable
level), thus improving the standby power. This is particularly well
suited for medium to high power offline applications, e.g. notebook
adapters. When the current setpoint falls below a given value, e.g. the
output power demand diminishes, the IC automatically enters the
so--called skip cycle mode and provides excellent efficiency at light
loads. Because this occurs at an adjustable low peak current together
http://onsemi.com
HIGH PERFORMANCE QR
CONTROLLER FEATURING PFC
SHUTDOWN
MARKING
DIAGRAM
with a proprietary Soft--Skip t technique, no acoustic noise takes
place. Skip cycle also offers the ability to easily select the maximum
switching frequency at which foldback and standby take place.
The NCP1381/82 also features several efficient protection options
like a) a short--circuit / overload detection independent of the auxiliary
voltage b) an auto--recovery brown--out detection and c) an input to
14
1
SOIC--14
D SUFFIX
CASE 751A
14
1
NCP138xG
AWLYWW
externally latch the circuit in case of Overvoltage Protection or Over
Temperature Protection.
Features
? Current--Mode Quasi--Resonant Operation
? Adjustable Line Over Power Protection
? Extremely Low Startup Current of 15 m A Maximum
NCP138xG = Specific Device Code
x = 1 or 2
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
G = Pb--Free Package
?
Soft--Skip Cycle Capability at Adjustable Peak Currents
?
?
?
?
?
?
?
?
Plateau Sensing Overvoltage
Brown--Out Protection
Maximum t ON Limitation
Overpower Protection by current Sense Offset
Internal 5 ms Soft--Start Management
Short--Circuit Protection Independent from Auxiliary Level
External Latch Input Pin for an OTP Signal
Go--To--Standby Signal for the PFC Front Stage
ADJ_GTS
BO
DMG
Timer
Skip/OVP
FB
CS
1
2
3
4
5
6
7
14
13
12
11
10
9
8
nc
nc
Ref
GTS
V CC
DRV
GND
?
?
True Frequency (t ON + t OFF ) Clamp Circuit
Low and Noiseless, No--Load Standby Power
?
Internal Leading Edge Blanking
ORDERING INFORMATION
?
?
?
+500 mA / --800 mA Peak Current Drive Capability
5 V / 10 mA Reference Voltage
These are Pb--Free Devices
Device
NCP1381DR2G
Package
SOIC--14
(Pb--Free)
Shipping ?
2500/Tape & Reel
Typical Applications
? High Power AC/DC Adapters for Notebooks, etc
? Offline Battery Chargers
? Set--Top Boxes Power Supplies, TV, Monitors, etc
NCP1382DR2G SOIC--14 2500/Tape & Reel
(Pb--Free)
?For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
? Semiconductor Components Industries, LLC, 2010
November, 2010 -- Rev. 5
1
Publication Order Number:
N CP1381/D
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