- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄363217 > NCP1308DR2G (ON SEMICONDUCTOR) PWM Current−Mode Controller for Free−Running Quasi−Resonant Operation PDF資料下載
參數(shù)資料
| 型號(hào)： | NCP1308DR2G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | PWM Current−Mode Controller for Free−Running Quasi−Resonant Operation |
| 中文描述： | 0.5 A SWITCHING CONTROLLER, PDSO8 |
| 封裝： | LEAD FREE, SOIC-8 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 210K |
| 代理商： | NCP1308DR2G |
Semiconductor Components Industries, LLC, 2005
December, 2005 Rev. 2
1
Publication Order Number:
NCP1308/D
NCP1308
PWM CurrentMode
Controller for FreeRunning
QuasiResonant Operation
The NCP1308 combines a true current mode modulator and a
demagnetization detector to ensure full borderline/Critical
Conduction Mode in any load/line conditions and minimum drain
voltage switching (QuasiResonant operation). Due to its inherent
skip cycle capability, the controller enters burst mode as soon as the
power demand falls below a predetermined level. As this happens at
low peak current, no audible noise can be heard. An internal 10 s
timer prevents the freerun frequency to exceed a high frequency
(therefore below the 150 kHz CISPR22 EMI starting limit), while
the skip adjustment capability lets the user select the frequency at
which the burst foldback takes place.
The Dynamic SelfSupply (DSS) drastically simplifies the
transformer design in avoiding the use of an auxiliary winding to
supply the NCP1308. This feature is particularly useful in
applications where the output voltage varies during operation (e.g.
battery chargers). Thanks to its highvoltage technology, the IC is
directly connected to the highvoltage DC rail. As a result, the
shortcircuit trip point is not dependent upon any V
CC
auxiliary
level.
The transformer core reset detection is done through an auxiliary
winding which, brought via a dedicated pin. If an OVP is detected on
the V
CC
pin, the IC permanently latches off.
Finally, the continuous feedback signal monitoring implemented
with an Overcurrent fault Protection circuitry (OCP) makes the final
design rugged and reliable.
Features
FreeRunning Borderline/Critical Mode QuasiResonant Operation
CurrentMode with Adjustable Skip Cycle Capability
Dynamic SelfSupply Type of V
CC
AutoRecovery Overcurrent Protection
Improved UVLO for V
CC
below 10 V
Latching Overvoltage Protection on V
CC
500 mA Peak Current Source/Sink Capability
Internal 1.0 ms SoftStart
Internal 10 s Minimum T
OFF
Adjustable Skip Level
Internal Temperature Shutdown
Internal Leading Edge Blanking
Direct Optocoupler Connection
SPICE Models Available for TRANsient Analysis
This is a PbFree Device
Typical Applications
ACDC Adapters for Notebooks, etc.
Offline Battery Chargers
Consumer Electronics (DVD Players, SetTop Boxes, TVs, etc.)
Auxiliary Power Supplies (USB, Appliances, TVs, etc.)
http://onsemi.com
SOIC8
DR SUFFIX
CASE 751
PIN CONNECTIONS
MARKING
DIAGRAM
A
L
Y
W
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbFree Package
1
8
1
Dmg
8 HV
2
FB
3
CS
4
GND
6 V
CC
5 Drv
(Top View)
1308
ALYW
1
8
7
Device
Package
Shipping
ORDERING INFORMATION
NCP1308DR2G
SOIC8
(PbFree)
2500/Tape & Reel
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.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NCP1377BD1R2G | PWM Current−Mode Controller for Free−Running Quasi−Resonant Operation |
| NCP1377BDR2G | PWM Current−Mode Controller for Free−Running Quasi−Resonant Operation |
| NCP1377BPG | PWM Current−Mode Controller for Free−Running Quasi−Resonant Operation |
| NCP1377D1R2G | PWM Current−Mode Controller for Free−Running Quasi−Resonant Operation |
| NCP1377PG | PWM Current−Mode Controller for Free−Running Quasi−Resonant Operation |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCP1316 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| NCP1336 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Quasi-Resonant Current Mode Controller for High Power Universal Off-Line Supplies |
| NCP1336A | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Quasi-Resonant Current Mode Controller for High Power Universal Off-Line Supplies |
| NCP1336ADR2G | 功能描述:電流型 PWM 控制器 QUASI-RES CUR MODE CONTRL 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 |
| NCP1336B | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Quasi-Resonant Current Mode Controller for High Power Universal Off-Line Supplies |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。