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參數(shù)資料
| 型號： | NCP1377BD1R2G |
| 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, 300 kHz SWITCHING FREQ-MAX, PDSO7 |
| 封裝： | HALOGEN FREE, BFR FREE AND ROHS COMPLIANT, SOIC-8/7 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 310K |
| 代理商： | NCP1377BD1R2G |
Semiconductor Components Industries, LLC, 2006
October, 2006
Rev. 7
1
Publication Order Number:
NCP1377/D
NCP1377, NCP1377B
PWM CurrentMode
Controller for FreeRunning
QuasiResonant Operation
The NCP1377 combines a true current mode modulator and a
demagnetization detector which ensures full borderline/critical
Conduction Mode in any load/line conditions together with
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. For
NCP1377, 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. For
NC1377B, the internal timer duration is reduced to 3.0 s to allow
operation at higher frequencies (up to 300 kHz).
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 1377 features a sampling time of
4.5 s whereas it is 1.5 s for the B version.
The NCP1377 also features an efficient protective circuitries
which, 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.
Features
Free
Running Borderline/Critical Mode Quasi
Resonant Operation
Latched Overvoltage Protection
Auto
Recovery Short
Circuit Protection Via UVLO Crossover
External Latch Triggering, e.g. Via Overtemperature Signal
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
Under Voltage Lockout Level of 12.5 V (On) and 7.5 V (Min)
Direct Optocoupler Connection
SPICE Models Available for TRANsient Analysis
Internal Minimum T
OFF
Pb
Free Packages are Available
Typical Applications
AC
DC Adapters for Notebooks, etc.
Offline Battery Chargers
Consumer Electronics (DVD Players, Set
Top Boxes, TVs, etc.)
Auxiliary Power Supplies (USB, Appliances, TVs, etc.)
SOIC
7
D1 SUFFIX
CASE 751U
1
8
SOIC
8
DR SUFFIX
CASE 751
PIN CONNECTIONS
MARKING DIAGRAMS
A
L, WL
Y, YY
W, WW = Work Week
or G
= Pb
Free Package
(Note: Microdot may be in either location)
= Assembly Location
= Wafer Lot
= Year
1
8
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)
1377P
AWL
YYWWG
1
1377BP
AWL
YYWWG
1
http://onsemi.com
377D1
ALYW
1
8
See detailed ordering and shipping information in the package
dimensions section on page 14 of this data sheet.
ORDERING INFORMATION
1377
ALYW
1
8
1377B
ALYW
1
8
相關PDF資料 |
PDF描述 |
|---|---|
| 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 |
| NCP1377 | PWM Current-Mode Controller for Free-Running Quasi-Resonant Operation |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| NCP1377BDR2 | 功能描述:電流型 PWM 控制器 Quasi Resonant RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 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 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| NCP1377BDR2G | 功能描述:電流型 PWM 控制器 Quasi Resonant Current Mode PWM RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 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 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| NCP1377BDR2G-CUT TAPE | 制造商:ON 功能描述:NCP1377 Series 18 V 300 kHz Surface Mount PWM Current-Mode Controller - SOIC-8 |
| NCP1377BP | 功能描述:電流型 PWM 控制器 Quasi Resonant RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 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 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| NCP1377BPG | 功能描述:電流型 PWM 控制器 Quasi Resonant Current Mode PWM RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 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 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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