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NCP803SN293T3G Datasheet, PDF (1/6 Pages) ON Semiconductor – Very Low Supply Current 3-Pin Microprocessor Reset Monitor | |||
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NCP803
Very Low Supply Current
3âPin Microprocessor
Reset Monitor
The NCP803 is a costâeffective system supervisor circuit designed
to monitor VCC in digital systems and provide a reset signal to the host
processor when necessary. No external components are required.
The reset output is driven active within 10 msec of VCC falling
through the reset voltage threshold. Reset is maintained active for a
minimum of 140 msec after VCC rises above the reset threshold. The
NCP803 has an open drain activeâlow RESET output. The output of
the NCP803 is guaranteed valid down to VCC = 1.0 V and is available
in a SOTâ23 package.
The NCP803 is optimized to reject fast transient glitches on the VCC
line. Low supply current of 1.0 mA (VCC = 3.2 V) make this device
suitable for battery powered applications.
Features
⢠Precision VCC Monitor for 2.5 V, 3.0 V, 3.3 V, and 5.0 V Supplies
⢠Precision Monitoring Voltages from 1.6 V to 4.9 V Available
in 100 mV Steps
⢠140 msec Guaranteed Minimum RESET Output Duration
⢠RESET Output Guaranteed to VCC = 1.0 V
⢠Low 1.0 µA Supply Current
⢠VCC Transient Immunity
⢠Small SOTâ23 Package
⢠No External Components
⢠Wide Operating Temperature: â40°C to 105°C
⢠PbâFree Packages are Available
Typical Applications
⢠Computers
⢠Embedded Systems
⢠Battery Powered Equipment
⢠Critical µP Power Supply Monitoring
VCC
C = 100 nF
VCC
NCP803
RESET
Rpullâup
VCC
µP
RESET
GND
GND
0
0
Figure 1. Typical Application Diagram
http://onsemi.com
MARKING
DIAGRAM
1
3
SOTâ23
(TOâ236)
CASE 318
3
xxxM
G
2
1
2
xxx = Specific Device Code
M
= Date Code
G
= PbâFree Package
PIN CONFIGURATION
GND 1
RESET 2
3 VCC
SOTâ23
(Top View)
NOTE: SOTâ23 is equivalent to JEDEC (TOâ236)
ORDERING INFORMATION
Device
Package
Shippingâ
NCP803SNxxxT1 SOTâ23 3000/Tape & Reel
NCP803SNxxxT1G SOTâ23 3000/Tape & Reel
(PbâFree)
NCP803SNxxxT3 SOTâ23 10000/Tape & Reel
NCP803SNxxxT3G SOTâ23 10000/Tape & Reel
(PbâFree)
â For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
NOTE: The âxxxâ denotes a suffix for Vcc voltage threshold
options â see page 5 for more details.
*The âT3â suffix refers to a 13 inch reel.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 5 of this data sheet.
© Semiconductor Components Industries, LLC, 2005
1
April, 2005 â Rev. 5
Publication Order Number:
NCP803/D
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