参数资料
型号: NCP1308DR2G
厂商: ON Semiconductor
文件页数: 2/16页
文件大小: 0K
描述: IC REG CTRLR FLYBACK PWM 8-SOIC
标准包装: 1
PWM 型: 电流模式
输出数: 1
频率 - 最大: 75kHz
电源电压: 11 V ~ 20 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: 0°C ~ 125°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 剪切带 (CT)
其它名称: NCP1308DR2GOSCT
NCP1308
R*
+
12 V @ 1 A
GND
NCP1308
+
Universal
1
8
Network
2
3
4
7
6
5
+
*Please refer to the application information section.
Figure 1. Typical Application Schematic
PIN FUNCTION DESCRIPTION
Y1 Type
Pin
1
2
Symbol
Dmg
FB
Function
Core reset detection
Sets the peak current setpoint
Description
The auxiliary FLYBACK signal ensures discontinuous operation.
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, the 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
LEB By inserting a resistor in series with the pin, you control the level at which the
skip operation takes place.
4
5
6
GND
Drv
V CC
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. If an auxiliary
winding brings this pin above 16 V typical, the circuit permanently latches off.
7
8
NC
HV
-
High-voltage pin
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.
http://onsemi.com
2
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