參數(shù)資料
型號(hào)： NCP1239
廠商： ON SEMICONDUCTOR
英文描述： Low−Standby High Performance PWM Controller
文件頁(yè)數(shù)： 1/38頁(yè)
文件大?。?/td> 1145K
代理商： NCP1239
Semiconductor Components Industries, LLC, 2005
October, 2005 Rev. 5
1
Publication Order Number
NCP1239/D
NCP1239
LowStandby High
Performance PWM Controller
Housed in SO16 the NCP1239 represents a major leap toward
ultracompact Switch Mode Power Supplies specifically tailored for
medium to high power offline applications, e.g. notebook adapters.
The NCP1239 offers everything needed to build a rugged and efficient
power supply, including a dedicated event management to drive a
Power Factor Correction (PFC) frontend circuitry. The circuit
disables the frontend PFC stage while still in fault or standby
conditions by interrupting the PFC controller powering for improved
noload consumption figures. As soon as normal operating mode
recovers, the NCP1239 feeds back the PFC that wakesup.
When power demand is low, the IC automatically enters the
socalled skipcycle mode and provides excellent efficiency at light
loads. Because this occurs at a user adjustable low peak current, no
acoustic noise takes place.
Features
CurrentMode Operation with Internal Ramp Compensation
Internal HighVoltage Current Source for lossless Startup
Adjustable SkipCycle Capability
Selectable SoftStart Period
Internal Frequency Dithering for Improved EMI Signature
GotoStandby Signal for PFC FrontStage
Large V
CC
Operation from 12.2 V to 36 V
500 mV Overcurrent Limit
500 mA/800 mA Peak Current Capability
5 V/10 mA Pinnedout Reference Voltage
Adjustable Switching Frequency up to 250 kHz.
Overload Protection Independent of the Auxiliary V
CC
Adjustable Over Power Compensation (NCP1239F)
Programmable Maximum Duty Cycle (NCP1239V)
PbFree Packages are Available*
Typical Applications
High Power AC/DC Adapters for Notebooks etc.
Offline Battery Chargers
Telecom and PC Power Supplies
Flyback Applications (NCP1239F) and Forward Applications
(NCP1239V)
*For additional information on our PbFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
NCP1239xD = Device Code
x
= F or V
A
= Assembly Location
WL
= Wafer Lot
Y
= Year
WW
= Work Week
G
= PbFree Package
MARKING DIAGRAM
16
SO16
FD or VD SUFFIX
CASE 751B
NCP1239xDG
AWLYWW
1
1
16
http://onsemi.com
PIN CONNECTIONS
Over Power
Limit
FB
1
16
CS
Skip Adjust
GND
SS/Timer
Drv
Brownout
V
CC
Rt
NC
Fault Detect
NC
REF5V
HV
GTS
Max Duty
Cycle
FB
1
16
CS
Skip Adjust
GND
SS/Timer
Drv
Brownout
V
CC
Rt
NC
Fault Detect
NC
REF5V
HV
GTS
NCP1239F
NCP1239V
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
ORDERING INFORMATION
相關(guān)PDF資料
PDF描述
NCP1239FDR2 Low−Standby High Performance PWM Controller
NCP1239FDR2G Low−Standby High Performance PWM Controller
NCP1239VDR2 Low−Standby High Performance PWM Controller
NCP1239VDR2G Low−Standby High Performance PWM Controller
NCP1271 Soft−Skip Mode Standby PWM Controller with Adjustable Skip Level and External Latch
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NCP1239D 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Low-Standby High Performance PWM Controller
NCP1239F 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:AC-DC Offline Switching Controllers/Regulators
NCP1239FDR2 功能描述:電流型 PWM 控制器 Low Standby Power RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
NCP1239FDR2G 功能描述:電流型 PWM 控制器 Low Standby Power High Performance PWM RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
NCP1239V 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:AC-DC Offline Switching Controllers/Regulators
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