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參數(shù)資料
| 型號： | NCV33064 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Undervoltage Sensing Circuit(μP監(jiān)控電路) |
| 中文描述： | 欠壓檢測電路（微處理器監(jiān)控電路） |
| 文件頁數(shù)： | 4/11頁 |
| 文件大?。?/td> | 117K |
| 代理商： | NCV33064 |
MC34064, MC33064, NCV33064
http://onsemi.com
4
Figure 8. Clamp Diode Forward Current versus Voltage
Figure 9. Low Voltage Microprocessor Reset
Figure 10. Low Voltage Microprocessor Reset with Additional Hysteresis
80
60
40
20
0
0
0.4
0.8
1.2
1.6
V
F
, FORWARD VOLTAGE (V)
,
F
V
in
= 0 V
T
A
= 25
°
C
A time delayed reset can be accomplished with the
addition of C
DLY
. For systems with extremely fast
power supply rise times (<500 ns) it is recommended
that the RC
DLY
time constant be greater than 5.0 s.
V
th(MPU)
is the microprocessor reset input threshold.
t
DLY
= RC
DLY
In
1
1
V
th(MPU)
V
in
Power
Supply
+
Input
R
Reset
C
DLY
Microprocessor
Circuit
1.2 V
ref
GND
+
Power
Supply
+
Input
R
L
Reset
Microprocessor
Circuit
1.2V
ref
GND
+
V
H
≈
4.6 R
H
R
L
+ 0.02
V
th(lower)
≈
340 R
H
x 10
6
Where:R
H
≤
150
Where:
R
L
≥
1.5 ,
≤
10 k
Comparator hysteresis can be increased with the addition of resistor R
H
. The hysteresis equation has been
simplified and does not account for the change of input current I
in
as V
CC
crosses the comparator threshold
(Figure 4). An increase of the lower threshold V
th(lower)
will be observed due to I
in
which is typically 340 A at
4.59V. The equations are accurate to
±
10% with R
H
less than 150 and R
L
between 1.5 k and 10 k
I
in
R
H
TEST DATA
V
H
(mV)
V
th
(mV)
R
H
( )
R
L
(k )
20
51
40
81
71
112
100
164
190
327
276
480
0
3.4
6.8
6.8
10
10
16
16
34
34
51
51
0
10
20
20
30
30
47
47
100
100
150
150
0
1.5
4.7
1.5
2.7
1.5
2.7
1.5
2.7
1.5
2.7
1.5
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCV33064D-5R2 | 功能描述:監(jiān)控電路 4.59V UnderVoltage RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| NCV33064D-5R2G | 功能描述:監(jiān)控電路 4.59V UnderVoltage Sensing Circuit RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| NCV33064DM-5R2 | 功能描述:監(jiān)控電路 4.59V UnderVoltage RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| NCV33064DM-5R2G | 功能描述:監(jiān)控電路 4.59V UnderVoltage Sensing Circuit RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| NCV33064P-5RA | 功能描述:監(jiān)控電路 4.59V UnderVoltage RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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