参数资料
| 型号： | NCP1207ADR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 1/17页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM CM OVP OCP HV 8SOIC |
| 标准包装： | 1 |
| 输出隔离： | 隔离 |
| 频率范围： | 200kHz |
| 输入电压： | 10.6 V ~ 20 V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 标准包装 |
| 其它名称： | NCP1207ADR2GOSDKR |
NCP1207A, NCP1207B
PWM Current-Mode
Controller for Free Running
Quasi-Resonant Operation
The NCP1207A/B 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,
http://onsemi.com
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 the NCP1207A, an internal 8.0 m s timer
prevents the free ? run frequency to exceed 125 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 the NCP1207B, the internal timer duration is reduced to
8
1
SOIC ? 8
D SUFFIX
CASE 751
MARKING
DIAGRAM
8
1207A
ALYW
G
1
4.5 m s to allow operation at higher frequencies (up to 200 kHz).
The Dynamic Self ? Supply (DSS) drastically simplifies the
transformer design in avoiding the use of an auxiliary winding to
supply the NCP1207A/B. This feature is particularly useful in
applications where the output voltage varies during operation (e.g.
battery chargers). Due to its high ? voltage technology, the IC is
8
1
SOIC ? 7
D SUFFIX
CASE 751U
8
8
1
1207B
ALYW
G
1
directly connected to the high ? voltage DC rail. As a result, the
short ? circuit 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, also enables fast
Overvoltage Protection (OVP). Once an OVP has been detected, 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.
? Free ? Running Borderline/Critical Mode Quasi ? Resonant Operation
? Current ? Mode with Adjustable Skip ? Cycle Capability
? No Auxiliary Winding V CC Operation
? Auto ? Recovery Overcurrent Protection
? Latching Overvoltage Protection
? External Latch Triggering, e.g. Via Overtemperature Signal
? 500 mA Peak Current Source/Sink Capability
? Undervoltage Lockout for V CC Below 10 V
? Internal 1.0 ms Soft ? Start
? Internal 8.0 m s Minimum T OFF for NCP1207A,
4.5 m s Minimum T OFF for NCP1207B
? Adjustable Skip Level
? Internal Temperature Shutdown
? Direct Optocoupler Connection
? SPICE Models Available for TRANsient Analysis
? These are Pb ? Free and Halide ? Free Devices
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.)
PDIP ? 8 1207AP
P SUFFIX AWL
CASE 626 YYWWG
8
1
1207A/B/AP = Device Code
A = Assembly Location
L, WL = Wafer Lot
Y, YY = Year
W, WW = Work Week
G or G = Pb ? Free Package
PIN CONNECTIONS
Dmg 1 8 HV
FB 2 7 NC
CS 3 6 V CC
GND 4 5 Drv
ORDERING INFORMATION
Device Package Shipping ?
NCP1207ADR2G SOIC ? 8 2500/Tape & Reel
(Pb ? Free)
NCP1207APG PDIP ? 8 50 Units / Rail
(Pb ? Free)
NCP1207BDR2G SOIC ? 7 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, 2013
August, 2013 ? Rev. 12
1
Publication Order Number:
NCP1207A/D
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PDF描述 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP1207AP | 功能描述:电流型 PWM 控制器 Quasi Resonant RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| NCP1207APG | 功能描述:电流型 PWM 控制器 Quasi Resonant Current Mode PWM RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| NCP1207B | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:PWM Current-Mode Controller for Free Running Quasi-Resonant Operation |
| NCP1207BDR2G | 功能描述:电流型 PWM 控制器 ANA QUASI RESNT SMPS RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| NCP1207-D | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:PWM Current-Mode Controller for Free Running Quasi-Resonant Operation |
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