ETC NCP302HSN20T1

NCP302, NCP303
Voltage Detector Series
with Programmable Delay
The NCP302 and NCP303 series are second generation ultra–low
current voltage detectors that contain a programmable time delay
generator. These devices are specifically designed for use as reset
controllers in portable microprocessor based systems where extended
battery life is paramount.
Each series features a highly accurate under voltage detector with
hysteresis and an externally programmable time delay generator. This
combination of features prevents erratic system reset operation.
The NCP302 series consists of complementary output devices that
are available with either an active high or active low reset. The
NCP303 series has an open drain N–channel output with an active low
reset output.
The NCP302 and NCP303 device series are available in the
TSOP–5 package with seven standard under voltage thresholds.
Additional thresholds that range from 0.9 V to 4.9 V in 100 mV steps
can be manufactured.
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5
1
TSOP–5
SN SUFFIX
CASE 483
PIN CONNECTIONS AND
MARKING DIAGRAM
Features
Quiescent Current of 0.5 µA Typical
High Accuracy Under Voltage Threshold of 2.0%
Externally Programmable Time Delay Generator
Wide Operating Voltage Range of 0.8 V to 10 V
Complementary or Open Drain Output
Active Low or Active High Reset
1
Input
2
Ground
3
4 N.C.
xxx = 302 or 303
Y
= Year
W = Work Week
(Top View)
Typical Applications
•
•
•
•
5 CD
xxxYW
•
•
•
•
•
•
Reset
Output
Microprocessor Reset Controller
Low Battery Detection
Power Fail Indicator
Battery Backup Detection
ORDERING INFORMATION
See detailed ordering and shipping information in the ordering
information section on page 21 of this data sheet.
Representative Block Diagrams
NCP303LSNxxT1
Open Drain Output Configuration
NCP302xSNxxT1
Complementary Output Configuration
2
2
Input
RD
*
Gnd
5
1
Reset Output
RD
1
Vref
3
Input
Reset
Output
Vref
3
CD
Gnd
5
CD
* Inverter for active low devices.
* Buffer for active high devices.
 Semiconductor Components Industries, LLC, 2000
November, 2000 – Rev. 4
This device contains 28 active transistors.
1
Publication Order Number:
NCP302/D
NCP302, NCP303
MAXIMUM RATINGS
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Symbol
Value
Unit
Input Power Supply Voltage (Pin 2)
Rating
Vin
12
V
Delay Capacitor Pin Voltage (Pin 5)
VCD
–0.3 to Vin + 0.3
V
Output Voltage (Pin 1)
Complementary, NCP302
N–Channel Open Drain, NCP303
VOUT
V
–0.3 to Vin + 0.3
–0.3 to 12
Output Current (Pin 1) (Note 2.)
IOUT
70
mA
Thermal Resistance Junction to Air
RJA
250
°C/W
Operating Junction Temperature Range
TJ
–40 to +125
°C
Storage Temperature Range
Tstg
–55 to +150
°C
1. This device series contains ESD protection and exceeds the following tests:
Human Body Model 2000 V per MIL–STD–883, Method 3015.
Machine Model Method 200 V.
2. The maximum package power dissipation limit must not be exceeded.
P
D
T
T
J(max)
A
R
JA
ELECTRICAL CHARACTERISTICS (For all values TA = 25°C, unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
Detector Threshold (Pin 2, Vin Decreasing)
VDET–
0.882
0.900
0.918
V
Detector Threshold Hysteresis (Pin 2, Vin Increasing)
VHYS
0.027
0.045
0.063
V
–
–
0.20
0.45
0.6
1.2
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NCP302/3 – 0.9
Supply Current (Pin 2)
(Vin = 0.8 V)
(Vin = 2.9 V)
µA
Iin
Maximum Operating Voltage (Pin 2)
Vin(max)
–
–
10
V
Minimum Operating Voltage (Pin 2)
(TA = –40°C to 85°C)
Vin(min)
–
–
0.55
0.65
0.70
0.80
V
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Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
(VOUT = 0.05V, Vin = 0.70V)
(VOUT = 0.50V, Vin = 0.85V)
Pch Source Current, NCP302
(VOUT = 2.4V, Vin = 4.5V)
IOUT
CD Delay Pin Threshold Voltage (Pin 5)
(Vin = 0.99 V)
VTCD
Delay Capacitor Pin Sink Current (Pin 5)
(Vin = 0.7 V, VCD = 0.1V)
(Vin = 1.5 V, VCD = 0.5V)
ICD
Delay Pullup Resistance (Pin 5)
RD
mA
0.01
0.05
0.05
0.50
–
–
1.0
2.0
–
V
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2
0.50
0.67
0.84
2.0
10
120
300
–
–
0.5
1.0
2.0
µA
M
NCP302, NCP303
ELECTRICAL CHARACTERISTICS (For all values TA = 25°C, unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
Detector Threshold (Pin 2, Vin Decreasing)
VDET–
Detector Threshold Hysteresis (Pin 2, Vin Increasing)
VHYS
1.764
1.80
1.836
V
0.054
0.090
0.126
V
–
–
0.23
0.48
0.7
1.3
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NCP302/3 – 1.8
Supply Current (Pin 2)
(Vin = 1.7 V)
(Vin = 3.8 V)
µA
Iin
Maximum Operating Voltage (Pin 2)
Vin(max)
–
–
10
V
Minimum Operating Voltage (Pin 2)
(TA = –40°C to 85°C)
Vin(min)
–
–
0.55
0.65
0.70
0.80
V
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Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
(VOUT = 0.05V, Vin = 0.70V)
(VOUT = 0.50V, Vin = 1.5V)
Pch Source Current, NCP302
(VOUT = 2.4V, Vin = 4.5V)
IOUT
CD Delay Pin Threshold Voltage (Pin 5)
(Vin = 1.98 V)
VTCD
Delay Capacitor Pin Sink Current (Pin 5)
(Vin = 0.7 V, VCD = 0.1V)
(Vin = 1.5 V, VCD = 0.5V)
ICD
Delay Pullup Resistance (Pin 5)
RD
mA
0.01
1.0
0.05
2.0
–
–
1.0
2.0
–
V
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0.99
1.34
1.68
2.0
200
120
1600
–
–
0.5
1.0
2.0
M
Typ
Max
Unit
µA
ELECTRICAL CHARACTERISTICS (For all values TA = 25°C, unless otherwise noted.)
Characteristic
Symbol
Min
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NCP302/3 – 2.0
Detector Threshold (Pin 2, Vin Decreasing)
VDET–
1.960
2.00
2.040
V
Detector Threshold Hysteresis (Pin 2, Vin Increasing)
VHYS
0.06
0.10
0.14
V
–
–
0.23
0.48
0.8
1.3
Supply Current (Pin 2)
(Vin = 1.9 V)
(Vin = 4.0 V)
µA
Iin
Maximum Operating Voltage (Pin 2)
Vin(max)
–
–
10
V
Minimum Operating Voltage (Pin 2)
(TA = –40°C to 85°C)
Vin(min)
–
–
0.55
0.65
0.70
0.80
V
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Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
(VOUT = 0.05V, Vin = 0.70V)
(VOUT = 0.50V, Vin = 1.5V)
Pch Source Current, NCP302
(VOUT = 2.4V, Vin = 4.5V)
IOUT
CD Delay Pin Threshold Voltage (Pin 5)
(Vin = 2.2 V)
VTCD
Delay Capacitor Pin Sink Current (Pin 5)
(Vin = 0.7 V, VCD = 0.1V)
(Vin = 1.5 V, VCD = 0.5V)
ICD
Delay Pullup Resistance (Pin 5)
RD
mA
0.01
1.0
0.05
2.0
–
–
1.0
2.0
–
V
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3
1.10
1.49
1.87
2.0
200
120
1600
–
–
0.5
1.0
2.0
µA
M
NCP302, NCP303
ELECTRICAL CHARACTERISTICS (For all values TA = 25°C, unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
Detector Threshold (Pin 2, Vin Decreasing)
VDET–
2.646
2.700
2.754
V
Detector Threshold Hysteresis (Pin 2, Vin Increasing)
VHYS
0.081
0.135
0.189
V
–
–
0.26
0.46
0.8
1.3
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NCP302/3– 2.7
Supply Current (Pin 2)
(Vin = 2.6 V)
(Vin = 4.7 V)
µA
Iin
Maximum Operating Voltage (Pin 2)
Vin(max)
–
–
10
V
Minimum Operating Voltage (Pin 2)
(TA = –40°C to 85°C)
Vin(min)
–
–
0.55
0.65
0.70
0.80
V
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ÁÁÁÁ
ÁÁÁ
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
(VOUT = 0.05V, Vin = 0.70V)
(VOUT = 0.50V, Vin = 1.5V)
Pch Source Current, NCP302
(VOUT = 2.4V, Vin = 4.5V)
IOUT
CD Delay Pin Threshold Voltage (Pin 5)
(Vin = 2.97 V)
VTCD
Delay Capacitor Pin Sink Current (Pin 5)
(Vin = 0.7 V, VCD = 0.1V)
(Vin = 1.5 V, VCD = 0.5V)
ICD
Delay Pullup Resistance (Pin 5)
RD
mA
0.01
1.0
0.05
2.0
–
–
1.0
2.0
–
V
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ÁÁÁ
1.49
2.01
2.53
2.0
200
120
1600
–
–
0.5
1.0
2.0
M
Typ
Max
Unit
µA
ELECTRICAL CHARACTERISTICS (For all values TA = 25°C, unless otherwise noted.)
Characteristic
Symbol
Min
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
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ÁÁÁ
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ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
NCP302/3 – 3.0
Detector Threshold (Pin 2, Vin Decreasing)
VDET–
2.94
3.00
3.06
V
Detector Threshold Hysteresis (Pin 2, Vin Increasing)
VHYS
0.09
0.15
0.21
V
–
–
0.27
0.47
0.9
1.3
Supply Current (Pin 2)
(Vin = 2.87 V)
(Vin = 5.0 V)
µA
Iin
Maximum Operating Voltage (Pin 2)
Vin(max)
–
–
10
V
Minimum Operating Voltage (Pin 2)
(TA = –40°C to 85°C)
Vin(min)
–
–
0.55
0.65
0.70
0.80
V
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
(VOUT = 0.05V, Vin = 0.70V)
(VOUT = 0.50V, Vin = 1.5V)
Pch Source Current, NCP302
(VOUT = 2.4V, Vin = 4.5V)
IOUT
CD Delay Pin Threshold Voltage (Pin 5)
(Vin = 3.3 V)
VTCD
Delay Capacitor Pin Sink Current (Pin 5)
(Vin = 0.7 V, VCD = 0.1V)
(Vin = 1.5 V, VCD = 0.5V)
ICD
Delay Pullup Resistance (Pin 5)
RD
mA
0.01
1.0
0.05
2.0
–
–
1.0
2.0
–
V
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
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4
1.65
2.23
2.81
2.0
200
120
1600
–
–
0.5
1.0
2.0
µA
M
NCP302, NCP303
ELECTRICAL CHARACTERISTICS (For all values TA = 25°C, unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
Detector Threshold (Pin 2, Vin Decreasing)
VDET–
4.410
4.500
4.590
V
Detector Threshold Hysteresis (Pin 2, Vin Increasing)
VHYS
0.135
0.225
0.315
V
–
–
0.33
0.52
1.0
1.4
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
NCP302/3 – 4.5
Supply Current (Pin 2)
(Vin = 4.34 V)
(Vin = 6.5 V)
µA
Iin
Maximum Operating Voltage (Pin 2)
Vin(max)
–
–
10
V
Minimum Operating Voltage (Pin 2)
(TA = –40°C to 85°C)
Vin(min)
–
–
0.55
0.65
0.70
0.80
V
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
(VOUT = 0.05V, Vin = 0.70V)
(VOUT = 0.50V, Vin = 1.5V)
Pch Source Current, NCP302
(VOUT = 5.9V, Vin = 8.0V)
IOUT
CD Delay Pin Threshold Voltage (Pin 5)
(Vin = 4.95 V)
VTCD
Delay Capacitor Pin Sink Current (Pin 5)
(Vin = 0.7 V, VCD = 0.1V)
(Vin = 1.5 V, VCD = 0.5V)
ICD
Delay Pullup Resistance (Pin 5)
RD
mA
0.01
1.0
0.05
2.0
–
–
1.5
3.0
–
V
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
2.25
3.04
3.83
2.0
200
120
1600
–
–
0.5
1.0
2.0
M
Typ
Max
Unit
µA
ELECTRICAL CHARACTERISTICS (For all values TA = 25°C, unless otherwise noted.)
Characteristic
Symbol
Min
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
NCP302/3 – 4.7
Detector Threshold (Pin 2, Vin Decreasing)
VDET–
4.606
4.70
4.794
V
Detector Threshold Hysteresis (Pin 2, Vin Increasing)
VHYS
0.141
0.235
0.329
V
–
–
0.34
0.53
1.0
1.4
Supply Current (Pin 2)
(Vin = 4.54 V)
(Vin = 6.7 V)
µA
Iin
Maximum Operating Voltage (Pin 2)
Vin(max)
–
–
10
V
Minimum Operating Voltage (Pin 2)
(TA = –40°C to 85°C)
Vin(min)
–
–
0.55
0.65
0.70
0.80
V
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
(VOUT = 0.05V, Vin = 0.70V)
(VOUT = 0.50V, Vin = 1.5V)
Pch Source Current, NCP302
(VOUT = 5.9V, Vin = 8.0V)
IOUT
CD Delay Pin Threshold Voltage (Pin 5)
(Vin = 5.17 V)
VTCD
Delay Capacitor Pin Sink Current (Pin 5)
(Vin = 0.7 V, VCD = 0.1V)
(Vin = 1.5 V, VCD = 0.5V)
ICD
Delay Pullup Resistance (Pin 5)
RD
mA
0.01
1.0
0.05
2.0
–
–
1.5
3.0
–
2.59
3.49
4.40
2.0
200
120
1600
–
–
0.5
1.0
2.0
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
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5
V
µA
M
NCP302, NCP303
NCP302L
NCP303L
VDET+ + 2.0 V
VDET+ + 2.0 V
0.7 V
0.7 V
GND
GND
Input Voltage,
Pin 2
Reset Output
Voltage, Pin 1
VDET+ + 2.0 V
5.0 V
VDET+ + 2.0 V
2
2.5 V
GND
GND
tD1
tD2
tD1
tD2
NCP302 and NCP303 series are measured with a 10 pF capacitive load. NCP303 has an additional 470 k pullup resistor
connected from the reset output to +5.0 V. The reset output voltage waveforms are shown for the active low ‘L’ devices. Output
time delay tD1 and tD2 are dependent upon the delay capacitance. Refer to Figures 11, 12, and 13. The upper detector
threshold, VDET+ is the sum of the lower detector threshold, VDET– plus the input hysteresis, VHYS.
Figure 1. Measurement Conditions for tD1 and tD2
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6
NCP302, NCP303
Table 1. ELECTRICAL CHARACTERISTIC TABLE FOR 0.9 – 4.9 V
Detector Threshold
Hysteresis
Vin Low
Vin High
Vin Low
Vin High
Pch
Source
So
rce
Current
VHYS (V)
Iin
(A) (1)
Iin
(A) (2)
IOUT
(mA) (3)
IOUT
(mA) (4)
IOUT
(mA) (5)
Supply Current
NCP302 Series
Detector Threshold
VDET– (V)
Nch Sink Current
Part Number
Min
Typ
Max
Min
Typ
Max
Typ
Typ
Typ
Typ
Typ
NCP302(L/H)SN09T1
0.882
0.9
0.918
0.027
0.045
0.063
0.3
0.5
0.05
0.5
2.0
NCP302(L/H)SN10T1
0.980
1.0
1.020
0.030
0.050
0.070
NCP302(L/H)SN11T1
1.078
1.1
1.122
0.033
0.055
0.077
NCP302(L/H)SN12T1
1.176
1.2
1.224
0.036
0.060
0.084
NCP302(L/H)SN13T1
1.274
1.3
1.326
0.039
0.065
0.091
NCP302(L/H)SN14T1
1.372
1.4
1.428
0.042
0.070
0.098
NCP302(L/H)SN15T1
1.470
1.5
1.530
0.045
0.075
0.105
NCP302(L/H)SN16T1
1.568
1.6
1.632
0.048
0.080
0.112
NCP302(L/H)SN17T1
1.666
1.7
1.734
0.051
0.085
0.119
NCP302(L/H)SN18T1
1.764
1.8
1.836
0.054
0.090
0.126
NCP302(L/H)SN19T1
1.862
1.9
1.938
0.057
0.095
0.133
NCP302(L/H)SN20T1
1.960
2.0
2.040
0.060
0.100
0.140
NCP302(L/H)SN21T1
2.058
2.1
2.142
0.063
0.105
0.147
NCP302(L/H)SN22T1
2.156
2.2
2.244
0.066
0.110
0.154
NCP302(L/H)SN23T1
2.254
2.3
2.346
0.069
0.115
0.161
NCP302(L/H)SN24T1
2.352
2.4
2.448
0.072
0.120
0.168
NCP302(L/H)SN25T1
2.450
2.5
2.550
0.075
0.125
0.175
NCP302(L/H)SN26T1
2.548
2.6
2.652
0.078
0.130
0.182
NCP302(L/H)SN27T1
2.646
2.7
2.754
0.081
0.135
0.189
NCP302(L/H)SN28T1
2.744
2.8
2.856
0.084
0.140
0.196
NCP302(L/H)SN29T1
2.842
2.9
2.958
0.087
0.145
0.203
NCP302(L/H)SN30T1
2.940
3.0
3.060
0.090
0.150
0.210
NCP302(L/H)SN31T1
3.038
3.1
3.162
0.093
0.155
0.217
NCP302(L/H)SN32T1
3.136
3.2
3.264
0.096
0.160
0.224
NCP302(L/H)SN33T1
3.234
3.3
3.366
0.099
0.165
0.231
NCP302(L/H)SN34T1
3.332
3.4
3.468
0.102
0.170
0.238
NCP302(L/H)SN35T1
3.430
3.5
3.570
0.105
0.175
0.245
NCP302(L/H)SN36T1
3.528
3.6
3.672
0.108
0.180
0.252
NCP302(L/H)SN37T1
3.626
3.7
3.774
0.111
0.185
0.259
NCP302(L/H)SN38T1
3.724
3.8
3.876
0.114
0.190
0.266
NCP302(L/H)SN39T1
3.822
3.9
3.978
0.117
0.195
0.273
NCP302(L/H)SN40T1
3.920
4.0
4.080
0.120
0.200
0.280
NCP302(L/H)SN41T1
4.018
4.1
4.182
0.123
0.205
0.287
NCP302(L/H)SN42T1
4.116
4.2
4.284
0.126
0.210
0.294
NCP302(L/H)SN43T1
4.214
4.3
4.386
0.129
0.215
0.301
NCP302(L/H)SN44T1
4.312
4.4
4.488
0.132
0.220
0.308
NCP302(L/H)SN45T1
4.410
4.5
4.590
0.135
0.225
0.315
NCP302(L/H)SN46T1
4.508
4.6
4.692
0.138
0.230
0.322
NCP302(L/H)SN47T1
4.606
4.7
4.794
0.141
0.235
0.329
NCP302(L/H)SN48T1
4.704
4.8
4.896
0.144
0.240
0.336
NCP302(L/H)SN49T1
4.802
4.9
4.998
0.147
0.245
0.343
(1) Condition 1:
(2) Condition 2:
(3) Condition 3:
(4) Condition 4:
Condition 4:
(5) Condition 5:
1.0
2.0
0.4
0.6
3.0
0.9 — 2.9 V, Vin = VDET– – 0.10 V; 3.0 — 3.9 V, Vin = VDET– – 0.13 V; 4.0 — 4.9 V, Vin = VDET– – 0.16 V
0.9 — 4.9 V, Vin = VDET– + 2.0 V
0.9 — 4.9 V, Vin = 0.7 V, VOUT = 0.05 V, Active Low ‘L’ Suffix Devices
0.9 — 1.0 V, Vin = 0.85 V, VOUT = 0.5 V; 1.1 — 1.5 V, Vin = 1.0 V, VOUT = 0.5 V; 1.6 — 4.9 V, Vin = 1.5 V, VOUT = 0.5 V,
Active Low ‘L’ Suffix Devices
0.9 — 3.9 V, Vin = 4.5 V, VOUT = 2.4 V; 4.0 — 4.9 V, Vin = 8.0 V, VOUT = 5.9 V
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7
NCP302, NCP303
Table 2. ELECTRICAL CHARACTERISTIC TABLE FOR 0.9 – 4.9 V
NCP303 Series
Detector Threshold
Supply Current
Nch Sink Current
Detector Threshold
Hysteresis
Vin Low
Vin High
Vin Low
Vin High
VHYS (V)
Iin
(A) (1)
Iin
(A) (2)
IOUT
(mA) (3)
IOUT
(mA) (4)
VDET– (V)
Part Number
Min
Typ
Max
Min
Typ
Max
Typ
Typ
Typ
Typ
NCP303LSN09T1
0.882
0.9
0.918
0.027
0.045
0.063
0.3
0.5
0.05
0.5
NCP303LSN10T1
0.980
1.0
1.020
0.030
0.050
0.070
NCP303LSN11T1
1.078
1.1
1.122
0.033
0.055
0.077
NCP303LSN12T1
1.176
1.2
1.224
0.036
0.060
0.084
NCP303LSN13T1
1.274
1.3
1.326
0.039
0.065
0.091
NCP303LSN14T1
1.372
1.4
1.428
0.042
0.070
0.098
NCP303LSN15T1
1.470
1.5
1.530
0.045
0.075
0.105
NCP303LSN16T1
1.568
1.6
1.632
0.048
0.080
0.112
NCP303LSN17T1
1.666
1.7
1.734
0.051
0.085
0.119
NCP303LSN18T1
1.764
1.8
1.836
0.054
0.090
0.126
NCP303LSN19T1
1.862
1.9
1.938
0.057
0.095
0.133
NCP303LSN20T1
1.960
2.0
2.040
0.060
0.100
0.140
NCP303LSN21T1
2.058
2.1
2.142
0.063
0.105
0.147
NCP303LSN22T1
2.156
2.2
2.244
0.066
0.110
0.154
NCP303LSN23T1
2.254
2.3
2.346
0.069
0.115
0.161
NCP303LSN24T1
2.352
2.4
2.448
0.072
0.120
0.168
NCP303LSN25T1
2.450
2.5
2.550
0.075
0.125
0.175
NCP303LSN26T1
2.548
2.6
2.652
0.078
0.130
0.182
NCP303LSN27T1
2.646
2.7
2.754
0.081
0.135
0.189
NCP303LSN28T1
2.744
2.8
2.856
0.084
0.140
0.196
NCP303LSN29T1
2.842
2.9
2.958
0.087
0.145
0.203
NCP303LSN30T1
2.940
3.0
3.060
0.090
0.150
0.210
NCP303LSN31T1
3.038
3.1
3.162
0.093
0.155
0.217
NCP303LSN32T1
3.136
3.2
3.264
0.096
0.160
0.224
NCP303LSN33T1
3.234
3.3
3.366
0.099
0.165
0.231
NCP303LSN34T1
3.332
3.4
3.468
0.102
0.170
0.238
NCP303LSN35T1
3.430
3.5
3.570
0.105
0.175
0.245
NCP303LSN36T1
3.528
3.6
3.672
0.108
0.180
0.252
NCP303LSN37T1
3.626
3.7
3.774
0.111
0.185
0.259
NCP303LSN38T1
3.724
3.8
3.876
0.114
0.190
0.266
NCP303LSN39T1
3.822
3.9
3.978
0.117
0.195
0.273
NCP303LSN40T1
3.920
4.0
4.080
0.120
0.200
0.280
NCP303LSN41T1
4.018
4.1
4.182
0.123
0.205
0.287
NCP303LSN42T1
4.116
4.2
4.284
0.126
0.210
0.294
NCP303LSN43T1
4.214
4.3
4.386
0.129
0.215
0.301
NCP303LSN44T1
4.312
4.4
4.488
0.132
0.220
0.308
NCP303LSN45T1
4.410
4.5
4.590
0.135
0.225
0.315
NCP303LSN46T1
4.508
4.6
4.692
0.138
0.230
0.322
NCP303LSN47T1
4.606
4.7
4.794
0.141
0.235
0.329
NCP303LSN48T1
4.704
4.8
4.896
0.144
0.240
0.336
NCP303LSN49T1
4.802
4.9
4.998
0.147
0.245
0.343
(1) Condition 1:
(2) Condition 2:
(3) Condition 3:
(4) Condition 4:
Condition 4:
1.0
2.0
0.4
0.6
0.9 — 2.9 V, Vin = VDET– – 0.10 V; 3.0 — 3.9 V, Vin = VDET– – 0.13 V; 4.0 — 4.9 V, Vin = VDET– – 0.16 V
0.9 — 4.9 V, Vin = VDET– + 2.0 V
0.9 — 4.9 V, Vin = 0.7 V, VOUT = 0.05 V, Active Low ‘L’ Suffix Devices
0.9 — 1.0 V, Vin = 0.85 V, VOUT = 0.5 V; 1.1 — 1.5 V, Vin = 1.0 V, VOUT = 0.5 V; 1.6 — 4.9 V, Vin = 1.5 V, VOUT = 0.5 V,
Active Low ‘L’ Suffix Devices
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8
0.98
0.96
VDET+
0.94
0.92
VDET–
0.90
0.88
0.86
–50
0
–25
25
75
50
100
TA, AMBIENT TEMPERATURE (°C)
VDET, DETECTOR THRESHOLD VOLTAGE (V)
VDET, DETECTOR THRESHOLD VOLTAGE (V)
NCP302, NCP303
3.00
2.95
2.90
VDET+
2.85
2.80
2.75
VDET–
2.70
2.65
2.60
–50
VTCD, CD PIN THRESHOLD VOLTAGE (V)
VDET, DETECTOR THRESHOLD VOLTAGE (V)
4.8
VDET+
4.7
4.6
VDET–
4.5
4.4
0
25
50
75
100
Vin = 0.99 V
0.7
0.6
0.5
0.4
0.3
–50
Vin = 2.97 V
2.2
2.1
2.0
1.9
100
VTCD, CD PIN THRESHOLD VOLTAGE (V)
VTCD, CD PIN THRESHOLD VOLTAGE (V)
–25
0
75
25
50
TA, AMBIENT TEMPERATURE (°C)
100
Figure 5. NCP302/3 Series 0.9 V
CD Delay Pin Threshold Voltage vs. Temperature
2.3
0
75
25
50
TA, AMBIENT TEMPERATURE (°C)
100
0.8
Figure 4. NCP302/3 Series 4.5 V
Detector Threshold Voltage vs. Temperature
–25
75
0.9
TA, AMBIENT TEMPERATURE (°C)
1.8
–50
50
Figure 3. NCP302/3 Series 2.7 V
Detector Threshold Voltage vs. Temperature
4.9
–25
25
TA, AMBIENT TEMPERATURE (°C)
Figure 2. NCP302/3 Series 0.9 V
Detector Threshold Voltage vs. Temperature
4.3
–50
0
–25
3.3
Vin = 4.95 V
3.2
3.1
3.0
2.9
2.8
2.7
–50
–25
0
25
50
75
100
TA, AMBIENT TEMPERATURE (°C)
Figure 6. NCP302/3 Series 2.7 V
CD Delay Pin Threshold Voltage vs. Temperature
Figure 7. NCP302/3 Series 4.5 V
CD Delay Pin Threshold Voltage vs. Temperature
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ICD, CD DELAY PIN SINK CURRENT (mA)
0.6
TA = 25°C
0.5
Vin = 0.85 V
0.4
0.3
0.2
Vin = 0.7 V
0.1
0
0
0.4
0.2
0.6
1.0
0.8
8.0
TA = 25°C
7.0
Vin = 2.5 V
6.0
5.0
Vin = 2.0 V
4.0
3.0
2.0
Vin = 1.5 V
1.0
0
0
1.5
2.0
VCD, DELAY PIN VOLTAGE (V)
Figure 8. NCP302/3 Series 0.9 V
CD Delay Pin Sink Current vs. Voltage
Figure 9. NCP302/3 Series 2.7 V
CD Delay Pin Sink Current vs. Voltage
2.5
10000
18
16
TA = 25°C
TA = 25°C
Vin = 4.0 V
1000
14
Vin = 3.5 V
12
10
Vin = 3.0 V
8.0
6.0
Vin = 2.5 V
4.0
tD1 (s)
100
tD2 (ms)
10
1.0
2.0
0.1
0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0.0001
4.0
0.001
0.01
0.1
1.0
CD, DELAY PIN CAPACITANCE (µF)
VCD, DELAY PIN VOLTAGE (V)
Figure 10. NCP302/3 Series 4.5 V
CD Delay Pin Sink Current vs. Voltage
Figure 11. NCP302/3 Series 0.9 V
Output Time Delay vs. Capacitance
10000
10000
TA = 25°C
TA = 25°C
t D1, t D2 , OUTPUT TIME DELAY
t D1, t D2 , OUTPUT TIME DELAY
1.0
0.5
VCD, DELAY PIN VOLTAGE (V)
t D1, t D2 , OUTPUT TIME DELAY
ICD, CD DELAY PIN SINK CURRENT (mA)
ICD, CD DELAY PIN SINK CURRENT (mA)
NCP302, NCP303
1000
1000
tD1 (s)
100
tD2 (ms)
10
1.0
0.1
tD1 (s)
100
tD2 (ms)
10
1.0
0.1
0.0001
0.001
0.01
0.1
1.0
0.0001
CD, DELAY PIN CAPACITANCE (µF)
0.001
0.01
0.1
CD, DELAY PIN CAPACITANCE (µF)
Figure 12. NCP302/3 Series 2.7 V
Output Time Delay vs. Capacitance
Figure 13. NCP302/3 Series 4.5 V
Output Time Delay vs. Capacitance
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1.0
NCP302, NCP303
3.0
VOUT, OUTPUT VOLTAGE (V)
VOUT, OUTPUT VOLTAGE (V)
1.0
0.8
0.6
0.4
TA = –30°C
TA = 25°C
TA = 85°C
0.2
2.5
2.0
1.5
1.0
TA = –30°C
TA = 25°C
TA = 85°C
0.5
0
0
0
0.2
0.4
0.6
Vin, INPUT VOLTAGE (V)
1.0
0.8
0
Figure 14. NCP302L/3L Series 0.9 V
Reset Output Voltage vs. Input Voltage
IOUT, OUTPUT SINK CURRENT (mA)
VOUT, OUTPUT VOLTAGE (V)
6.0
5.0
4.0
3.0
TA = –30°C
TA = 25°C
TA = 85°C
1.0
0
0
1.0
2.0
4.0
3.0
Vin, INPUT VOLTAGE (V)
5.0
3.0
1.2
TA = 25°C
1.0
Vin = 0.85 V
0.8
0.6
0.4
Vin = 0.7 V
0.2
0
6.0
0
0.4
0.2
0.6
1.0
0.8
VOUT, OUTPUT VOLTAGE (V)
Figure 16. NCP302L/3L Series 4.5 V
Reset Output Voltage vs. Input Voltage
Figure 17. NCP302L/3L Series 0.9 V
Reset Output Sink Current vs. Output Voltage
16
35
IOUT, OUTPUT SINK CURRENT (mA)
IOUT, OUTPUT SINK CURRENT (mA)
2.5
Figure 15. NCP302L/3L Series 2.7 V
Reset Output Voltage vs. Input Voltage
7.0
2.0
0.5
1.5
2.0
Vin, INPUT VOLTAGE (V)
1.0
TA = 25°C
14
Vin = 2.5 V
12
10
8.0
Vin = 2.0 V
6.0
4.0
Vin = 1.5 V
2.0
0
0
0.5
1.0
1.5
2.0
TA = 25°C
30
25
Vin = 3.5 V
20
Vin = 3.0 V
15
Vin = 2.5 V
10
Vin = 2.0 V
5.0
Vin = 1.5 V
0
0
2.5
Vin = 4.0 V
0.5
1.0
1.5
2.0
2.5
3.0
3.5
VOUT, OUTPUT VOLTAGE (V)
VOUT, OUTPUT VOLTAGE (V)
Figure 18. NCP302L/3L Series 2.7 V
Reset Output Sink Current vs. Output Voltage
Figure 19. NCP302L/3L Series 4.5 V
Reset Output Sink Current vs. Output Voltage
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4.0
NCP302, NCP303
2.5
6.0
TA = 25°C
Iin, INPUT CURRENT (µA)
Iin, INPUT CURRENT (µA)
TA = 25°C
2.0
1.5
1.0
0.5
0
2.5
2.0
1.5
1.0
0.5
0
0
2.0
4.0
6.0
Vin, INPUT VOLTAGE (V)
10
8.0
0
Figure 20. NCP302/3 Series 0.9 V
Input Current vs. Input Voltage
2.0
6.0
4.0
Vin, INPUT VOLTAGE (V)
8.0
10
Figure 21. NCP302/3 Series 2.7 V
Input Current vs. Input Voltage
18
250
tD2, OUTPUT TIME DELAY (ms)
Iin, INPUT CURRENT (µA)
TA = 25°C
2.5
2.0
1.5
1.0
0.5
0
0
2.0
6.0
4.0
Vin, INPUT VOLTAGE (V)
150
100
50
0
–50
10
8.0
0
25
75
50
100
Figure 23. NCP302/3 Series 0.9 V
Reset Output Time Delay vs. Temperature
350
250
CD = 0.1 F
300
tD2, OUTPUT TIME DELAY (ms)
tD2, OUTPUT TIME DELAY (ms)
–25
TA, AMBIENT TEMPERATURE (°C)
Figure 22. NCP302/3 Series 4.5 V
Input Current vs. Input Voltage
250
200
150
100
50
0
–50
CD = 0.1 F
200
–25
0
25
50
75
100
CD = 0.1 F
200
150
100
50
0
–50
TA, AMBIENT TEMPERATURE (°C)
–25
0
25
50
75
TA, AMBIENT TEMPERATURE (°C)
Figure 24. NCP302/3 Series 2.7 V
Reset Output Time Delay vs. Temperature
Figure 25. NCP302/3 Series 4.5 V
Reset Output Time Delay vs. Temperature
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100
NCP302, NCP303
7.0
IOUT, OUTPUT SINK CURRENT (mA)
IOUT, OUTPUT SINK CURRENT (mA)
1.4
1.2
1.0
0.8
TA = 85°C
0.6
0.4
TA = 25°C
0.2
TA = –30°C
5.0
TA = –30°C
4.0
TA = 25°C
TA = 85°C
3.0
2.0
1.0
0
0
0
0.4
0.2
0.6
0
1.0
0.8
2.5
2.0
Figure 27. NCP302L/3L Series 2.7 V
Reset Output Sink Current vs. Input Voltage
TA = –30°C
8.0
TA = 25°C
6.0
4.0
TA = 85°C
2.0
0
1.0
2.0
3.0
Vin, INPUT VOLTAGE (V)
5.0
4.0
0.6
0.5
0.4
TA = 85°C
0.3
0.2
TA = 25°C
0.1
TA = –30°C
0
0
ICD, CD DELAY PIN SINK CURRENT (mA)
TA = –30°C
TA = 25°C
TA = 85°C
1.0
0
0.5
1.0
1.5
2.0
0.4
0.6
0.8
1.0
Vin, INPUT VOLTAGE (V)
4.0
2.0
0.2
Figure 29. NCP302/3 Series 0.9 V
CD Delay Pin Sink Current vs. Input Voltage
5.0
3.0
3.0
0.7
Figure 28. NCP302L/3L Series 4.5 V
Reset Output Sink Current vs. Input Voltage
ICD, CD DELAY PIN SINK CURRENT (mA)
1.5
Figure 26. NCP302L/3L Series 0.9 V
Reset Output Sink Current vs. Input Voltage
10
0
1.0
Vin, INPUT VOLTAGE (V)
12
0
0.5
Vin, INPUT VOLTAGE (V)
ICD, CD DELAY PIN SINK CURRENT (mA)
IOUT, OUTPUT SINK CURRENT (mA)
6.0
2.5
3.0
6.0
5.0
TA = –30°C
4.0
TA = 25°C
3.0
TA = 85°C
2.0
1.0
0
0
1.0
2.0
3.0
4.0
Vin, INPUT VOLTAGE (V)
Vin, INPUT VOLTAGE (V)
Figure 30. NCP302/3 Series 2.7 V
CD Delay Pin Sink Current vs. Input Voltage
Figure 31. NCP302/3 Series 4.5 V
CD Delay Pin Sink Current vs. Input Voltage
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13
5.0
12
IOUT, OUTPUT SOURCE CURRENT (mA)
IOUT, OUTPUT SOURCE CURRENT (mA)
NCP302, NCP303
VOUT = Vin –2.1 V
TA = 25°C
10
Vin –1.5 V
8.0
6.0
Vin –1.0 V
4.0
Vin –0.5 V
2.0
0
0
2.0
4.0
6.0
8.0
12
VOUT = Vin –2.1 V
TA = 25°C
10
Vin –1.5 V
8.0
Vin –1.0 V
6.0
4.0
Vin –0.5 V
2.0
0
0
10
8.0
6.0
10
Vin, INPUT VOLTAGE (V)
Vin, INPUT VOLTAGE (V)
Figure 32. NCP302L Series 0.9 V
Reset Output Source Current vs. Input Voltage
Figure 33. NCP302L Series 2.7 V
Reset Output Source Current vs. Input Voltage
12
1.8
VOUT = Vin –2.1 V
10
RD, DELAY RESISTANCE (MΩ)
IOUT, OUTPUT SOURCE CURRENT (mA)
4.0
2.0
TA = 25°C
Vin –1.5 V
8.0
Vin –1.0 V
6.0
4.0
Vin –0.5 V
2.0
0
0
2.0
4.0
6.0
8.0
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–50
10
Vin, INPUT VOLTAGE (V)
–25
0
25
50
75
TA, AMBIENT TEMPERATURE (°C)
Figure 34. NCP302L Series 4.5 V
Reset Output Source Current vs. Input Voltage
Figure 35. NCP302/3 Series
Delay Resistance vs. Temperature
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100
NCP302, NCP303
OPERATING DESCRIPTION
Vin will again return to its nominal level and become greater
than the VDET+. The voltage detector will turn off the
N–channel MOSFET and allow pullup resistor RD to charge
external capacitor CD, thus creating a programmable delay
for releasing the reset signal. When the voltage at Pin 5
exceeds the inverter/buffer threshold, typically 0.675 Vin,
the reset output will revert back to its original state. The reset
output time delay versus capacitance is shown in Figures 11
through 13. The voltage detector and inverter/buffer have
built–in hysteresis to prevent erratic reset operation.
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 and time
delay are required. Figures 37 through 44 show various
application examples.
The NCP302 and NCP303 series devices consist of a
precision voltage detector that drives a time delay generator.
Figures 36 and 37 show a timing diagram and a typical
application. Initially consider that input voltage Vin is at a
nominal level and it is greater than the voltage detector upper
threshold (VDET+). The voltage at Pin 5 and capacitor CD
will be at the same level as Vin, 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 Vin becomes significantly deficient, it will fall below the
lower detector threshold (VDET–) and the external time
delay capacitor CD will be immediately discharged by an
internal N–channel MOSFET that connects to Pin 5. 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,
Input Voltage, Pin 2
Vin
VDET+
VDET–
Vin
Capacitor, Pin 5
Reset Output (Active Low), Pin 1
0.675 Vin
Vin
VDET–
0V
Reset Output (Active High), Pin 1
Vin
VDET–
0V
tD2
Figure 36. Timing Waveforms
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NCP302, NCP303
APPLICATION CIRCUIT INFORMATION
VDD
2
5
CD
CD
1
NCP302
Series
Microprocessor
Reset
Reset Output
* Required for
Gnd
3
VDD
*
Input
Gnd
NCP303
Figure 37. Microprocessor Reset Circuit
2.85 V
2.70 V
Vin < 2.7 ON
2
5
CD
Input
1
NCP302
LSN27T1
To Additional Circuitry
Reset Output
Vin > 2.835 ON
3
Gnd
Figure 38. Battery Charge Indicator
Vsupply
5.0 V
1.0 V
0V
2
5
CD
CD
NCP303
LSN45T1
3
470 k
Input
1
To Additional Circuitry
Reset Output
0.001 F
Missing Pulse
Gnd
Input
0V
Vin
0.675*Vin
CD
Reset Output
tD2
Figure 39. Missing Pulse Detector or Frequency Detector
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NCP302, NCP303
VDD
RH
2
VDD
Input
RL
5
CD
1
NCP301
NCP303
LSN27T1
3
Microprocessor
Reset
Reset Output
Gnd
Gnd
Figure 40. Microprocessor Reset Circuit with Additional Hysteresis
Comparator hysteresis can be increased with the addition of
resistor RH. The hysteresis equations have been simplified and
do not account for the change of input current Iin as Vin crosses
the comparator threshold. The internal resistance, Rin is simply
calculated using Iin = 0.26 µA at 2.6 V.
Vin Decreasing:
V th RR
Vin Increasing:
V th H
1 V DET
in
RH
1 V DET V HYS
R in R L
VHYS = Vin Increasing – Vin Decreasing
Test Data
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁ
ÁÁÁ
ÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁ
ÁÁÁ
ÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁ
ÁÁÁ
ÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁ
ÁÁÁ
ÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁ
ÁÁÁ
ÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁ
ÁÁÁ
ÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁ
ÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁ
ÁÁÁÁÁ
ÁÁ
Vth Decreasing
(mV)
Vth Increasing
(mV)
VHYS
(mV)
RH
()
RL
(k)
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.84
2.87
2.88
2.91
2.90
2.94
2.98
2.70
3.04
3.15
0.135
0.17
0.19
0.21
0.20
0.24
0.28
0.27
0.34
0.35
0
100
100
100
220
220
220
470
470
470
–
10
6.8
4.3
10
6.8
4.3
10
6.8
4.3
5.0 V
100 k
Test Data
C
2
C (F)
fOSC (kHz)
IQ (A)
0.01
2590
21.77
1
0.1
490
21.97
Reset Output
1.0
52
22.07
Input
82 k
5
CD
NCP301
NCP302
HSN27T1
LSN27T1
3
Gnd
Figure 41. Simple Clock Oscillator
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NCP302, NCP303
Vsupply
This circuit monitors the current at the load. As
current flows through the load, a voltage drop with
respect to ground appears across Rsense where
Vsense = Iload * Rsense. The following conditions apply:
Load
VDD
Rsense
2
If:
ILoad VDET– /Rsense
ILoad (VDET–+VHYS)/Rsense
Input
50 k
5
CD
NCP301
NCP303
LSN09T1
LSN27T1
3
1
Then:
Reset Output = 0 V
Reset Output = VDD
Microcontroller
Reset Output
Gnd
Gnd
Figure 42. Microcontroller Systems Load Sensing
Vsupply
2
5
CD
5
CD
Input
NCP303
NCP301
LSN27T1
LSN45T1
3
Gnd
2
Input
NCP303
NCP301
LSN27T1
3
Gnd
2
Input
1
Reset
Output
1
Reset
Output
Vin = 1.0 V to 10 V
5
CD
NCP303
NCP301
LSN27T1
LSN18T1
3
1
Reset
Output
Gnd
A simple voltage monitor can be constructed by connecting several voltage detectors as shown above. Each LED will
sequentially turn on when the respective voltage detector threshold (VDET– +VHYS) is exceeded. Note that detector
thresholds (VDET–) that range from 0.9 V to 4.9 V in 100 mV steps can be manufactured.
Figure 43. LED Bar Graph Voltage Monitor
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NCP302, NCP303
Power Supply 1
2
5
CD
Input
1
NCP303
LSN18T1
3
Gnd
2
Input
Reset Output
Reset Output
To MCU or Logic
Circuitry
Power Supply 2
1
NCP300
LSN33T1
3
Gnd
2
Input
Reset Output
Power Supply 3
1
NCP300
LSN45T1
3
Reset Output
Gnd
For monitoring power supplies with a time delay reset, only a single NCP303 with delay capacitor is required.
Figure 44. Multiple Power Supply Undervoltage
Supervision with Time Delay Reset
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NCP302, NCP303
MINIMUM RECOMMENDED FOOTPRINT FOR SURFACE MOUNTED APPLICATIONS
Surface mount board layout is a critical portion of the
total design. The footprint for the semiconductor packages
must be the correct size to insure proper solder connection
interface between the board and the package. With the
correct pad geometry, the packages will self align when
subjected to a solder reflow process.
0.094
2.4
0.037
0.95
0.074
1.9
0.037
0.95
0.028
0.7
0.039
1.0
TSOP–5
(Footprint Compatible with SOT23–5)
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20
inches
mm
NCP302, NCP303
ORDERING INFORMATION
Device
Threshold
Voltage
NCP302LSN09T1
NCP302LSN18T1
NCP302LSN20T1
NCP302LSN27T1
NCP302LSN30T1
NCP302LSN45T1
NCP302LSN47T1
0.9
1.8
2.0
2.7
3.0
4.5
4.7
NCP302HSN09T1
NCP302HSN18T1
NCP302HSN20T1
NCP302HSN27T1
NCP302HSN30T1
NCP302HSN45T1
NCP302HSN47T1
0.9
1.8
2.0
2.7
3.0
4.5
4.7
NCP303LSN09T1
NCP303LSN18T1
NCP303LSN20T1
NCP303LSN27T1
NCP303LSN30T1
NCP303LSN45T1
NCP303LSN47T1
0.9
1.8
2.0
2.7
3.0
4.5
4.7
Output
Type
Reset
Marking
Active
Low
SBOYW
SBFYW
SBDYW
SAWYW
SATYW
SALYW
SACYW
Active
High
SDOYW
SFHYW
SFGYW
SDKYW
SDIYW
SDGYW
SDFYW
Active
Low
SDEYW
SCVYW
SCTYW
SCMYW
SCJYW
SBTYW
SBRYW
CMOS
Open
Drain
Package
(Qty/Reel)
3000 Units on
7 inch Reel
NOTE: The ordering information lists seven standard under voltage thresholds with active low outputs. Additional active low threshold devices,
ranging from 0.9 V to 4.9 V in 100 mV increments and NCP302 active high output devices, ranging from 0.9 V to 4.9 V in 100 V increments
can be manufactured. Contact your ON Semiconductor representative for availability. The electrical characteristics of these additional devices
are shown in Tables 1 and 2.
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21
NCP302, NCP303
PACKAGE DIMENSIONS
TSOP–5
SN SUFFIX
PLASTIC PACKAGE
CASE 483–01
ISSUE A
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. MAXIMUM LEAD THICKNESS INCLUDES LEAD
FINISH THICKNESS. MINIMUM LEAD THICKNESS
IS THE MINIMUM THICKNESS OF BASE
MATERIAL.
D
S
5
4
1
2
3
B
L
G
A
J
C
0.05 (0.002)
H
M
K
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22
DIM
A
B
C
D
G
H
J
K
L
M
S
MILLIMETERS
MIN
MAX
2.90
3.10
1.30
1.70
0.90
1.10
0.25
0.50
0.85
1.00
0.013
0.100
0.10
0.26
0.20
0.60
1.25
1.55
0
10 2.50
3.00
INCHES
MIN
MAX
0.1142 0.1220
0.0512 0.0669
0.0354 0.0433
0.0098 0.0197
0.0335 0.0413
0.0005 0.0040
0.0040 0.0102
0.0079 0.0236
0.0493 0.0610
0
10 0.0985 0.1181
NCP302, NCP303
Notes
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23
NCP302, NCP303
ON Semiconductor and
are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes
without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular
purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability,
including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be
validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others.
SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or
death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold
SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable
attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim
alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer.
PUBLICATION ORDERING INFORMATION
NORTH AMERICA Literature Fulfillment:
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 303–675–2175 or 800–344–3860 Toll Free USA/Canada
Fax: 303–675–2176 or 800–344–3867 Toll Free USA/Canada
Email: [email protected]
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German Phone: (+1) 303–308–7140 (Mon–Fri 2:30pm to 7:00pm CET)
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Email: [email protected]
CENTRAL/SOUTH AMERICA:
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Email: ONlit–[email protected]
Toll–Free from Mexico: Dial 01–800–288–2872 for Access –
then Dial 866–297–9322
ASIA/PACIFIC: LDC for ON Semiconductor – Asia Support
Phone: 303–675–2121 (Tue–Fri 9:00am to 1:00pm, Hong Kong Time)
Toll Free from Hong Kong & Singapore:
001–800–4422–3781
Email: ONlit–[email protected]
JAPAN: ON Semiconductor, Japan Customer Focus Center
4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–0031
Phone: 81–3–5740–2700
Email: [email protected]
ON Semiconductor Website: http://onsemi.com
EUROPEAN TOLL–FREE ACCESS*: 00–800–4422–3781
*Available from Germany, France, Italy, UK, Ireland
For additional information, please contact your local
Sales Representative.
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24
NCP302/D