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參數(shù)資料
| 型號： | NCP304HSQ40T1 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 電源管理 |
| 英文描述： | Single Output LDO, 250mA, Fixed(1.5V), Low Quiescent Current, Power Good (PG) Output 8-SOIC |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
| 封裝： | SC-82AB, 4 PIN |
| 文件頁數(shù)： | 16/24頁 |
| 文件大小： | 244K |
| 代理商： | NCP304HSQ40T1 |
NCP304, NCP305
http://onsemi.com
16
OPERATING DESCRIPTION
The NCP304 and NCP305 series devices are second
generation ultra
low current voltage detectors. Figures 25
and 26 show a timing diagram and a typical application.
Initially consider that input voltage V
in
is at a nominal level
and it is greater than the voltage detector upper threshold
(V
DET+
), and the reset output (Pin 1) will be in the high state
for active low devices, or in the low state for active high
devices. If there is a power interruption and V
in
becomes
significantly deficient, it will fall below the lower detector
threshold (V
DET
). This sequence of events causes the Reset
output to be in the low state for active low devices, or in the
high state for active high devices. After completion of the
power interruption, V
in
will again return to its nominal level
and become greater than the V
DET+
. The voltage detector
has built
in hysteresis to prevent erratic reset operation as
the comparator threshold is crossed.
Although these device series are specifically designed for
use as reset controllers in portable microprocessor based
systems, they offer a cost
effective solution in numerous
applications where precise voltage monitoring is required.
Figure 26 through Figure 32 shows various application
examples.
Figure 25. Timing Waveforms
V
in
V
DET
+
V
DET
Input Voltage, Pin 2
V
in
0 V
Reset Output (Active Low), Pin 1
Reset Output (Active High), Pin 1
V
in
0 V
V
DET
+
V
DET
V
DET
+
V
DET
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NCP304HSQ41T1 | Single Output LDO, 250mA, Fixed(1.5V), Low Quiescent Current, Power Good (PG) Output 8-SOIC |
| NCP304HSQ44T1 | Voltage Detector Series |
| NCP304HSQ48T1 | Voltage Detector Series |
| NCP304LSQ24T1 | Single Output LDO, 250mA, Fixed(1.8V), Low Quiescent Current, Power Good (PG) Output 8-SOIC |
| NCP304LSQ25T1 | Voltage Detector Series |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCP304HSQ41T1 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Voltage Detector Series |
| NCP304HSQ42T1 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Voltage Detector Series |
| NCP304HSQ43T1 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Voltage Detector Series |
| NCP304HSQ44T1 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Voltage Detector Series |
| NCP304HSQ45T1 | 功能描述:電壓監(jiān)測器/監(jiān)控器 4.5V Detector RoHS:否 制造商:Texas Instruments 監(jiān)測電壓數(shù):2 監(jiān)測電壓:Adjustable 輸出類型:Open Drain 欠電壓閾值: 過電壓閾值: 準(zhǔn)確性:1 % 工作電源電壓:1.5 V to 6.5 V 工作電源電流:1.8 uA 最大工作溫度:+ 125 C 封裝 / 箱體:SON-6 安裝風(fēng)格:SMD/SMT |
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