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參數(shù)資料
| 型號： | NCP1203P40G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | PWM Current−Mode Controller for Universal Off−Line Supplies Featuring Standby and Short Circuit Protection |
| 中文描述： | 0.25 A SWITCHING CONTROLLER, 47 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封裝： | LEAD FREE, PLASTIC, DIP-8 |
| 文件頁數(shù)： | 2/15頁 |
| 文件大?。?/td> | 217K |
| 代理商： | NCP1203P40G |
NCP1203
http://onsemi.com
2
Figure 1. Typical Application Example
EMI
FILTER
UNIVERSAL
INPUT
+
+
NCP1203
Adj
+
V
OUT
Aux.
FB
CS
GND
HV
V
CC
Drv
1
2
3
4
8
7
6
5
*
*Please refer to the application information section
PIN FUNCTION DESCRIPTION
Pin No.
Pin Name
Function
Pin Description
1
Adj
Adjust the skipping peak current
This pin lets you adjust the level at which the cycle skipping process takes
place. Shorting this pin to ground, permanently disables the skip cycle
feature.
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. Skip cycle occurs when
FB falls below Vpin1.
3
CS
Current sense input
This pin senses the primary current and routes it to the internal comparator
via an L.E.B.
4
GND
The IC ground
5
Drv
Driving pulses
The driver’s output to an external MOSFET.
6
V
CC
Supplies the IC
This pin is connected to an external bulk capacitor of typically 22 F.
7
NC
This unconnected pin ensures adequate creepage distance.
8
HV
Ensure a clean and lossless
startup sequence
Connected to the highvoltage rail, this pin injects a constant current into
the V
CC
capacitor during the startup sequence.
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相關(guān)代理商/技術(shù)參數(shù) |
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| NCP1203P60 | 功能描述:電流型 PWM 控制器 60KHz Current Mode RoHS:否 制造商:Texas Instruments 開關(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| NCP1203P60G | 功能描述:電流型 PWM 控制器 60KHz Current Mode SMPS PWM RoHS:否 制造商:Texas Instruments 開關(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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| NCP1205/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback |
| NCP1205_06 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback |
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