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| 型号： | NCP1377P |
| 厂商： | ON Semiconductor |
| 文件页数： | 2/17页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM CM OVP UVLO 8DIP |
| 产品变化通告： | LTB Notification 03/Jan/2008 |
| 标准包装： | 50 |
| 输出隔离： | 隔离 |
| 频率范围： | 100kHz |
| 输入电压： | 8.2 V ~ 18 V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 8-DIP（0.300"，7.62mm），7 引线 |
| 供应商设备封装： | 7-PDIP |
| 包装： | 管件 |
| 其它名称： | NCP1377POS |
NCP1377, NCP1377B
R*
+
12 V @ 1 A
GND
Universal
Network
+
OVP and
Demag
1
2
NCP1377
8
7
3
4
6
5
+
*Please refer to the application information section.
Figure 1. Typical Application Schematic
PIN FUNCTION DESCRIPTION
Y1 Type
Pin
1
Symbol
Demag
Function
Core reset detection and OVP
Description
The auxiliary FLYBACK signal ensures discontinuous operation and offers a fixed
overvoltage detection level of 7.2 V.
2
FB
Sets the peak current setpoint
By connecting an optocoupler to this pin, the peak current setpoint is adjusted
accordingly to the output power demand. By bringing this pin below the internal
skip level, you shut off the device.
3
CS
Current sense input and skip
cycle level selection
This pin senses the primary current and routes it to the internal comparator via an
L.E.B. By inserting a resistor in series with the pin, you control the level at which
the skip operation takes place.
4
5
6
7
8
GND
Drv
V CC
NC
HV
The IC ground
Driving pulses
Supplies the IC
?
High ? voltage pin
?
The driver’s output to an external MOSFET.
This pin is connected to an external bulk capacitor of typically 10 m F.
This unconnected pin ensures adequate creepage distance.
Connected to the high ? voltage rail, this pin injects a constant current into the V CC
bulk capacitor and ensures a clean lossless startup sequence.
http://onsemi.com
2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP1377PG | 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 |
| NCP1378 | 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 |
| NCP1378/D | 制造商:未知厂家 制造商全称:未知厂家 功能描述:PWM Current-Mode Controller for Free Running Quasi-Resonant Operation |
| NCP1378_06 | 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 |
| NCP1378DR2 | 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 |
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