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NCP302 Datasheet

  • NCP302

  • Voltage Detector Series with Programmable Delay

  • 26頁

  • ONSEMI

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NCP302, NCP303
Voltage Detector Series
with Programmable Delay
The NCP302 and NCP303 series are second generation ultra鈭抣ow
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鈭扖hannel output with an active low
reset output.
Features
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5
1
THIN SOT23鈭?/TSOP鈭?/SC59鈭?
CASE 483
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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
Pb鈭扚ree Packages are Available
PIN CONNECTIONS AND
MARKING DIAGRAM
Reset
Output
Input
Ground
1
xxxYW
2
3
(Top View)
xxx =Specific Device Code
Y
= Year
W = Work Week
5 C
D
4 N.C.
Typical Applications
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 22 of this data sheet.
NCP302xSNxxT1
Complementary Output Configuration
2
Input
2
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
漏
Semiconductor Components Industries, LLC, 2005
1
January, 2005 鈭?Rev. 14.5
Publication Order Number:
NCP302/D

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