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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 undervoltage 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.
Features
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MARKING DIAGRAM
5
1
THIN SOT23−5/
TSOP−5/SC59−5
CASE 483
5
xxx AWWG
G
1
•
•
•
•
•
•
•
Quiescent Current of 0.5
mA
Typical
High Accuracy Undervoltage 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
Specified Over the −40°C to +125°C Temperature Range
(Except for Voltage Options from 0.9 to 1.1 V)
•
Pb−Free Packages are Available
Typical Applications
xxx
= Specific Device Code
A
= Assembly Location
WW
= Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
Reset
Output
Input
Ground
1
2
3
(Top View)
4 N.C.
5 C
D
•
•
•
•
Microprocessor Reset Controller
Low Battery Detection
Power Fail Indicator
Battery Backup Detection
NCP302xSNxxT1
Complementary Output Configuration
2
Input
2
ORDERING INFORMATION
See detailed ordering and shipping information in the ordering
information section on page 23 of this data sheet.
NCP303LSNxxT1
Open Drain Output Configuration
Input
1
Reset Output
R
D
1
R
D
V
ref
*
3
GND 5
C
D
Reset
Output
V
ref
3
GND 5
C
D
*
Inverter for active low devices.
*
Buffer for active high devices.
This device contains 28 active transistors.
Figure 1. Representative Block Diagrams
©
Semiconductor Components Industries, LLC, 2005
1
July, 2005 − Rev. 15
Publication Order Number:
NCP302/D
NCP302, NCP303
MAXIMUM RATINGS
Rating
Input Power Supply Voltage (Pin 2)
Delay Capacitor Pin Voltage (Pin 5)
Output Voltage (Pin 1)
Complementary, NCP302
N−Channel Open Drain, NCP303
Output Current (Pin 1) (Note 2)
Thermal Resistance Junction−to−Air
Maximum Junction Temperature
Operating Ambient Temperature Range
All Voltage Options: 0.9 V to 1.1 V
All Voltage Options: 1.2 V to 4.9 V
Storage Temperature Range
Moisture Sensitivity Level
Latchup Performance (Note 3)
Positive
Negative
All NCP Options
All NCV Options
Symbol
V
in
V
CD
V
OUT
−0.3 to V
in
+ 0.3
−0.3 to 12
I
OUT
R
qJA
T
J
70
250
+125
+150
−40 to +85
−40 to +125
−55 to +150
1
mA
200
200
mA
°C/W
°C
Value
12
−0.3 to V
in
+ 0.3
Unit
V
V
V
T
A
T
A
T
stg
MSL
I
LATCHUP
°C
°C
°C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
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
qJA
3. Maximum ratings per JEDEC standard JESD78.
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2
NCP302, NCP303
ELECTRICAL CHARACTERISTICS
(For all values T
A
= −40°C to +125°C, unless otherwise noted.)
Characteristic
NCP302/3 − 0.9 (T
A
= 255C for voltage options from 0.9 to 1.1 V)
Detector Threshold (Pin 2, V
in
Decreasing)
Detector Threshold Hysteresis (Pin 2, V
in
Increasing)
Supply Current (Pin 2)
(V
in
= 0.8 V)
(V
in
= 2.9 V)
Maximum Operating Voltage (Pin 2)
Minimum Operating Voltage (Pin 2)
(T
A
= −40°C to 85°C)
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.05V, V
in
= 0.70V)
(V
OUT
= 0.50V, V
in
= 0.85V)
Pch Source Current, NCP302
(V
OUT
= 2.4V, V
in
= 4.5V)
Reset Output Current (Pin 1, Active High ‘H’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.5 V, V
in
= 1.5 V)
Pch Source Current, NCP302
(V
OUT
= 0.4 V, V
in
= 0.7 V)
(V
OUT
= GND, V
in
= 0.8 V)
C
D
Delay Pin Threshold Voltage (Pin 5)
(V
in
= 0.99 V)
Delay Capacitor Pin Sink Current (Pin 5)
(V
in
= 0.7 V, V
CD
= 0.1V)
(V
in
= 0.85 V, V
CD
= 0.5V)
Delay Pullup Resistance (Pin 5)
NCP302/3 − 1.8
Detector Threshold (Pin 2, V
in
Decreasing)
Detector Threshold Hysteresis (Pin 2, V
in
Increasing)
Supply Current (Pin 2)
(V
in
= 1.7 V)
(V
in
= 3.8 V)
Maximum Operating Voltage (Pin 2)
Minimum Operating Voltage (Pin 2) (T
A
= 25°C)
(T
A
= −40°C to 125°C)
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.05V, V
in
= 0.70V)
(V
OUT
= 0.50V, V
in
= 1.5V)
Pch Source Current, NCP302
(V
OUT
= 2.4V, V
in
= 4.5V)
Reset Output Current (Pin 1, Active High ‘H’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.5 V, V
in
= 5.0 V)
Pch Source Current, NCP302
(V
OUT
= 0.4 V, V
in
= 0.7 V)
(V
OUT
= GND, V
in
= 1.5 V)
I
OUT
6.3
0.011
0.525
11
0.04
0.6
−
−
−
V
DET−
V
HYS
I
in
−
−
V
in(max)
V
in(min)
I
OUT
0.01
1.0
1.0
0.05
2.0
6.0
−
−
−
mA
−
−
−
0.23
0.48
−
0.55
0.65
0.7
1.3
10
0.70
0.80
V
V
mA
1.764
0.054
1.80
0.090
1.836
0.126
V
V
mA
V
TCD
0.50
I
CD
2.0
10
R
D
0.5
120
300
1.0
−
−
2.0
MW
0.67
0.84
mA
I
OUT
1.05
0.011
0.014
2.5
0.04
0.08
−
−
−
V
V
DET−
V
HYS
I
in
−
−
V
in(max)
V
in(min)
I
OUT
0.01
0.05
1.0
0.05
0.50
6.0
−
−
−
mA
−
−
−
0.20
0.45
−
0.55
0.65
0.6
1.2
10
0.70
0.80
V
V
mA
0.882
0.027
0.900
0.045
0.918
0.063
V
V
mA
Symbol
Min
Typ
Max
Unit
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3
NCP302, NCP303
ELECTRICAL CHARACTERISTICS
(continued)
(For all values T
A
= −40°C to +125°C, unless otherwise noted.)
Characteristic
NCP302/3 − 1.8
C
D
Delay Pin Threshold Voltage (Pin 5)
(V
in
= 1.98 V)
Delay Capacitor Pin Sink Current (Pin 5)
(V
in
= 0.7 V, V
CD
= 0.1V)
(V
in
= 1.5 V, V
CD
= 0.5V)
Delay Pullup Resistance (Pin 5)
NCP302/3 − 2.0
Detector Threshold (Pin 2, V
in
Decreasing)
Detector Threshold Hysteresis (Pin 2, V
in
Increasing)
Supply Current (Pin 2)
(V
in
= 1.9 V)
(V
in
= 4.0 V)
Maximum Operating Voltage (Pin 2)
Minimum Operating Voltage (Pin 2) (T
A
= 25°C)
(T
A
= −40°C to 125°C)
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.05V, V
in
= 0.70V)
(V
OUT
= 0.50V, V
in
= 1.5V)
Pch Source Current, NCP302
(V
OUT
= 2.4V, V
in
= 4.5V)
Reset Output Current (Pin 1, Active High ‘H’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.5 V, V
in
= 5.0 V)
Pch Source Current, NCP302
(V
OUT
= 0.4 V, V
in
= 0.7 V)
(V
OUT
= GND, V
in
= 1.5 V)
C
D
Delay Pin Threshold Voltage (Pin 5)
(V
in
= 2.2 V)
Delay Capacitor Pin Sink Current (Pin 5)
(V
in
= 0.7 V, V
CD
= 0.1V)
(V
in
= 1.5 V, V
CD
= 0.5V)
Delay Pullup Resistance (Pin 5)
NCP302/3− 2.7
Detector Threshold (Pin 2, V
in
Decreasing)
Detector Threshold Hysteresis (Pin 2, V
in
Increasing)
Supply Current (Pin 2)
(V
in
= 2.6 V)
(V
in
= 4.7 V)
Maximum Operating Voltage (Pin 2)
Minimum Operating Voltage (Pin 2) (T
A
= 25°C)
(T
A
= −40°C to 125°C)
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.05V, V
in
= 0.70V)
(V
OUT
= 0.50V, V
in
= 1.5V)
Pch Source Current, NCP302
(V
OUT
= 2.4V, V
in
= 4.5V)
V
DET−
V
HYS
I
in
−
−
V
in(max)
V
in(min)
I
OUT
0.01
1.0
1.0
0.14
3.5
9.7
−
−
−
−
−
−
0.25
0.50
−
0.55
0.65
0.8
1.3
10
0.70
0.80
V
V
mA
2.646
0.081
2.700
0.135
2.754
0.189
V
V
mA
V
TCD
1.10
I
CD
2.0
200
R
D
0.5
250
3600
1.0
−
−
2.0
MW
1.49
1.87
mA
I
OUT
6.3
0.011
0.525
11
0.04
0.6
−
−
−
V
V
DET−
V
HYS
I
in
−
−
V
in(max)
V
in(min)
I
OUT
0.01
1.0
1.0
0.14
3.5
9.7
−
−
−
mA
−
−
−
0.23
0.48
−
0.55
0.65
0.8
1.3
10
0.70
0.80
V
V
mA
1.960
0.06
2.00
0.10
2.040
0.14
V
V
mA
V
TCD
0.99
I
CD
2.0
200
R
D
0.5
120
1600
1.0
−
−
2.0
MW
1.34
1.68
mA
V
Symbol
Min
Typ
Max
Unit
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4
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