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MAX803 Datasheet, PDF (1/9 Pages) ON Semiconductor – Very Low Supply Current 3-Pin Microprocessor Reset Monitor | |||
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MAX803 Series,
NCP803 Series
Very Low Supply Current
3âPin Microprocessor
Reset Monitor
The MAX803/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
timeout period which is trimmed by the factory after VCC rises above
the reset threshold. The MAX803/NCP803 has an open drain
activeâlow RESET output. Both devices are available in SOTâ23 and
SCâ70 packages.
The MAX803/NCP803 is optimized to reject fast transient glitches
on the VCC line. Low supply current of 0.5 mA (VCC = 3.2 V) make
these devices suitable for battery powered applications.
Features
⢠Precision VCC Monitor for 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V
Supplies
⢠Precision Monitoring Voltages from 1.2 V to 4.9 V Available
in 100 mV Steps
⢠Four Guaranteed Minimum PowerâOn Reset Pulse Width Available
(1 ms, 20 ms, 100 ms, and 140 ms)
⢠RESET Output Guaranteed to VCC = 1.0 V
⢠Low Supply Current
⢠VCC Transient Immunity
⢠No External Components
⢠Wide Operating Temperature: â40°C to 105°C
⢠PbâFree Packages are Available
Typical Applications
⢠Computers
⢠Embedded Systems
⢠Battery Powered Equipment
⢠Critical Microprocessor Power Supply Monitoring
VCC
C = 100 nF
VCC
MAX803
NCP803
RESET
Rpullâup
VCC
μP
RESET
http://onsemi.com
MARKING
DIAGRAM
1
3
SOTâ23
(TOâ236)
CASE 318
3
xxx MG
G
2
1
2
SCâ70
(SOTâ323)
CASE 419
xx MG
G
1
xxx = Specific Device Code
M
= Date Code
G
= PbâFree Package
(Note: Microdot may be in either location)
PIN CONFIGURATION
GND 1
3 VCC
RESET 2
SOTâ23/SCâ70
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 7 of this data sheet.
GND
GND
0
0
Figure 1. Typical Application Diagram
© Semiconductor Components Industries, LLC, 2006
1
March, 2006 â Rev. 0
Publication Order Number:
MAX803/D
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