參數(shù)資料
型號(hào)： NCP1378DR2G
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, 100 kHz SWITCHING FREQ-MAX, PDSO8
封裝： LEAD FREE, SOIC-8
文件頁(yè)數(shù)： 1/16頁(yè)
文件大小： 291K
代理商： NCP1378DR2G
Semiconductor Components Industries, LLC, 2006
October, 2006
Rev. 4
1
Publication Order Number:
NCP1378/D
NCP1378
PWM CurrentMode
Controller for FreeRunning
QuasiResonant Operation
The NCP1378 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 (Quasi
Resonant 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 8.0 s
timer prevents the free
run frequency to exceed 100 kHz (therefore
below the 150 kHz CISPR
22 EMI starting limit), while the skip
adjustment capability lets the user select the frequency at which the
burst foldback takes place.
The transformer core reset detection is done through an auxiliary
winding which, brought via a dedicated pin, also enables fast Over
Voltage Protection (OVP). Once an OVP has been detected, the IC
permanently latches off.
The NCP1378 also features an efficient protective circuitry that, in
presence of an overcurrent condition, disables the output pulses and
enters a safe burst mode, trying to restart. Once the default has gone,
the device auto
recovers. Finally an internal 1.0 ms Soft
Start
eliminates the traditional startup stress.
The NCP1378 is tailored for low voltage applications having
UVLO thresholds of 8.4 V (on) and 7.5 V (off).
Features
Free
Running Borderline/Critical Mode Quasi
Resonant Operation
Latched Overvoltage Protection
Auto
Recovery Short
Circuit Protection Via UVLO Crossover
Current
Mode with Adjustable Skip Cycle Capability
Internal 1.0 ms Soft
Start
Internal Temperature Shutdown
Internal Leading Edge Blanking
500 mA Peak Current Source/Sink Capability
External Latch Triggering, e.g. Via Overtemperature Signal
Direct Optocoupler Connection
SPICE Models Available for TRANsient Analysis
Internal 8.0 s Minimum T
OFF
Pb
Free Packages are Available*
Typical Applications
Battery
Based Operations
*For additional information on our Pb
Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques Reference
Manual, SOLDERRM/D.
SOIC
8
D SUFFIX
CASE 751
PIN CONNECTIONS
Device
Package
Shipping
ORDERING INFORMATION
NCP1378DR2
SOIC
8
2500 Tape & Reel
MARKING
DIAGRAMS
1
8
PDIP
7
P SUFFIX
CASE 626B
1
Dmg
8 HV
2
FB
3
CS
4
GND
6 V
CC
5 Drv
(Top View)
NCP1378P
PDIP
7
50 Units/Rail
1378P
AWL
YYWWG
1
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.
NCP1378PG
PDIP
7
(Pb
Free)
50 Units/Rail
http://onsemi.com
A
L, WL
Y, YY
W, WW
or G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb
Free Package
NCP1378DR2G
SOIC
8
(Pb
Free)
2500 Tape & Reel
1
8
1378
ALYW
1
8
相關(guān)PDF資料
PDF描述
NCP1378DR2 PWM Current-Mode Controller for Free-Running Quasi-Resonant Operation
NCP1378 PWM Current-Mode Controller for Free-Running Quasi-Resonant Operation
NCP1378P PWM Current-Mode Controller for Free-Running Quasi-Resonant Operation
NCP1378PG PWM Current-Mode Controller for Free-Running Quasi-Resonant Operation
NCP1396A High Performance Resonant Mode Controller featuring High−voltage Drivers
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NCP1378P 功能描述:電流型 PWM 控制器 Quasi Resonant 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
NCP1378PG 功能描述:電流型 PWM 控制器 Quasi Resonant Current Mode 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
NCP1379 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
NCP1379_11 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
NCP1379DR2G 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
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