参数资料
型号: NCP1207BDR2G
厂商: ON Semiconductor
文件页数: 2/17页
文件大小: 0K
描述: IC CTRLR PWM CM OVP OCP HV 7SOIC
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)7 引线
供应商设备封装: 7-SOIC
包装: 标准包装
其它名称: NCP1207BDR2GOSDKR
NCP1207A, NCP1207B
V out
*
+
+
OVP and
Demag
1
2
NCP1207A/B
8
7
GND
3
4
6
5
Universal Network
+
*Please refer to the application information section
Figure 1. Typical Application
PIN FUNCTION DESCRIPTION
Pin
1
Pin Name
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, device shuts off.
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
GND
Drv
V CC
NC
The IC ground
Driving pulses
Supplies the IC
--
--
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. (No pin on
NCP1207B)
8
HV
High--voltage pin
Connected to the high--voltage rail, this pin injects a constant current into the V CC
bulk capacitor.
http://onsemi.com
2
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