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參數(shù)資料
| 型號： | MC34064P-005 |
| 廠商： | Motorola, Inc. |
| 英文描述： | UNDERVOLTAGE SENSING CIRCUIT |
| 中文描述： | 欠壓檢測電路 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 143K |
| 代理商： | MC34064P-005 |
Figure 7. Clamp Diode Forward Current
versus Voltage
Figure 8. Low Voltage Microprocessor Reset
Figure 9. Low Voltage Microprocessor Reset with Additional Hysteresis
80
60
40
20
0
0
0.4
0.8
1.2
1.6
VF, FORWARD VOLTAGE (V)
,
F
I
Vin = 0 V
TA = 25
°
C
A time delayed reset can be accomplished with the
addition of CDLY. For systems with extremely fast
power supply rise times (<500 ns) it is recommended
that the RCDLY time constant be greater than 5.0
μ
s.
Vth(MPU) is the microprocessor reset input threshold.
tDLY = RCDLY In
1
1 –
Vth(MPU)
Vin
Power
Supply
+
–
2 (2)
R
1 (1)
Reset
CDLY
Microprocessor
Circuit
1.2 Vref
3 (4)
–
+
Power
Supply
+
–
2 (2)
RL
1 (1)
Reset
Circuit
1.2Vref
3 (4)
–
+
VH
≈
4.6 RH
RL
+ 0.02
Vth(lower)
≈
340 RH x 10–6
Where: RH
≤
150
Where:
RL
≥
1.5
,
≤
10 k
Comparator hysteresis can be increased with the addition of resistor RH. The hysteresis equation has been
simplified and does not account for the change of input current Iin as VCC crosses the comparator threshold
(Figure 4). An increase of the lower threshold
Vth(lower) will be observed due to Iin which is typically 340
μ
A at
4.59 V. The equations are accurate to
±
10% with RH less than 150
and RL between 1.5 k
and 10 k
.
Iin
RH
MC34064 MC33064
4
MOTOROLA ANALOG IC DEVICE DATA
Test Data
Vth
(mV)
VH
(mV)
RH
(
)
RL
(k
)
20
0
0
0
51
3.4
10
1.5
40
6.8
20
4.7
81
6.8
20
1.5
71
10
30
2.7
112
10
30
1.5
100
16
47
2.7
164
16
47
1.5
190
34
100
2.7
327
34
100
1.5
276
51
150
2.7
480
51
150
1.5
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| MC34064D-005 | UNDERVOLTAGE SENSING CIRCUIT |
| MC33064D-5 | UNDERVOLTAGE SENSING CIRCUIT |
| MC34064D-5 | Ultra-Small Supply Voltage Supervisors 5-SC70 -40 to 85 |
| MC34064P-5 | Processor Supervisory Circuits 5-SC70 -40 to 85 |
| MC33064 | UNDERVOLTAGE SENSING CIRCUIT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC34064P-005G | 制造商:ON Semiconductor 功能描述:Bulk |
| MC34064P5 | 制造商:ON Semiconductor 功能描述:VOLT SENSE CIRCUIT 34064 TO-92-3 |
| MC34064P-5 | 制造商:Motorola Inc 功能描述:Voltage Detector, Fixed, +4.6V, 3 Pin, Plastic, SIP 制造商:NA 功能描述:Voltage Detector, Fixed, +4.6V, 3 Pin, Plastic, SIP |
| MC34064P-5G | 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 |
| MC34064P5RA | 制造商:ON Semiconductor 功能描述: |
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