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參數(shù)資料
| 型號(hào)： | NCP1010ST130T3 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 24 Characters x 2 Lines, 5x7 Dot Matrix Character and Cursor |
| 中文描述： | 0.55 A SWITCHING REGULATOR, 143 kHz SWITCHING FREQ-MAX, PSSO4 |
| 封裝： | PLASTIC, SOT-223, 4 PIN |
| 文件頁(yè)數(shù)： | 15/24頁(yè) |
| 文件大?。?/td> | 324K |
| 代理商： | NCP1010ST130T3 |
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NCP1010, NCP1011, NCP1012, NCP1013, NCP1014
http://onsemi.com
15
SoftStart
The NCP101X features an internal 1.0 ms softstart
activated during the power on sequence (PON). As soon as
V
CC
reaches VCC
OFF
, the peak current is gradually
increased from nearly zero up to the maximum internal
clamping level (e.g. 350 mA). This situation lasts 1.0 ms
and further to that time period, the peak current limit is
blocked to the maximum until the supply enters regulation.
The softstart is also activated during the over current burst
(OCP) sequence. Every restart attempt is followed by a
softstart activation. Generally speaking, the softstart will
be activated when V
CC
ramps up either from zero (fresh
poweron sequence) or 4.7 V, the latchoff voltage
occurring during OCP. Figure 22 portrays the softstart
behavior. The time scales are purposely shifted to offer a
better zoom portion.
Figure 22. SoftStart is activated during a startup sequence or an OCP condition.
0 V (Fresh PON)
or
4.7 V (Overload)
V
CC
8.5 V
Current
Sense
Max Ip
1.0 ms
NonLatching Shutdown
In some cases, it might be desirable to shut off the part
temporarily and authorize its restart once the default has
disappeared. This option can easily be accomplished
through a single NPN bipolar transistor wired between FB
and ground. By pulling FB below the internal skip level
(Vskip), the output pulses are disabled. As soon as FB is
relaxed, the IC resumes its operation. Figure 23
depicts the
application example.
Figure 23. A nonlatching shutdown where pulses are stopped as long as the NPN is biased.
ON/OFF
2
7
3
4
5
1
8
Drain
+CV
cc
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NCP1010ST65T3 | 24 Characters x 2 Lines, 5x7 Dot Matrix Character and Cursor |
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| NCP1011ST130T3 | Self-Supplied Monolithic Switcher for Low Standby- Power Offline SMPS |
| NCP1011ST65T3 | Self-Supplied Monolithic Switcher for Low Standby- Power Offline SMPS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCP1010ST130T3G | 功能描述:電流型 PWM 控制器 Low Standby Power Monolithic Switcher RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)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 |
| NCP1010ST65T3 | 功能描述:交流/直流開關(guān)轉(zhuǎn)換器 Low Standby Power RoHS:否 制造商:STMicroelectronics 輸出電壓:800 V 輸入/電源電壓（最大值）:23.5 V 輸入/電源電壓（最小值）:11.5 V 開關(guān)頻率:115 kHz 電源電流:1.6 mA 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SSO-10 封裝:Reel |
| NCP1010ST65T3G | 功能描述:電流型 PWM 控制器 Low Standby Power Monolithic Switcher RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)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 |
| NCP1011 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Self-Supplied Monolithic Switcher for Low Standby- Power Offline SMPS |
| NCP1011/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Self-Supplied Monolithic Switcher for Low Standby-Power Offline SMPS |
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