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PDF NCP803 Data sheet ( Hoja de datos )
| Número de pieza | NCP803 | |
| Descripción | Very Low Supply Current 3-Pin Microprocessor Reset Monitor | |
| Fabricantes | ON Semiconductor | |
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MAX803 Series,
NCP803 Series
Very Low Supply Current
3−Pin Microprocessor
Reset Monitor
The MAX803/NCP803 is a cost−effective 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
active−low RESET output. Both devices are available in SOT−23 and
SC−70 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 Power−On 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: −40°C to 105°C
• Pb−Free Packages are Available
Typical Applications
• Computers
• Embedded Systems
• Battery Powered Equipment
• Critical Microprocessor Power Supply Monitoring
VCC
C = 100 nF
VCC
MAX803
NCP803
RESET
Rpull−up
VCC
μP
RESET
http://onsemi.com
MARKING
DIAGRAM
1
3 SOT−23
(TO−236)
CASE 318
3
xxx MG
G
2 12
SC−70
(SOT−323)
CASE 419
xx MG
G
1
xxx = Specific Device Code
M = Date Code
G = Pb−Free Package
(Note: Microdot may be in either location)
PIN CONFIGURATION
GND 1
3 VCC
RESET 2
SOT−23/SC−70
(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
Figure 1. Typical Application Diagram
0
© Semiconductor Components Industries, LLC, 2006
March, 2006 − Rev. 0
1
Publication Order Number:
MAX803/D
1 page  
MAX803 Series, NCP803 Series
TYPICAL OPERATING CHARACTERISTICS
125
100
VOD = 10 mV
VOD = VCC−VTH
300
VOD = 10 mV
240
VOD = VCC−VTH
75 180
VOD = 20 mV
50
VOD = 100 mV
25
VOD = 200 mV
0
−50 −25 0 25 50 75 100
TEMPERATURE (°C)
Figure 8. Power−Down Reset Delay vs.
Temperature and Overdrive (VTH = 1.2 V)
125
120 VOD = 20 mV
VOD = 100 mV
60
VOD = 200 mV
0
−50 −25
0
25 50 75 100 125
TEMPERATURE (°C)
Figure 9. Power−Down Reset Delay vs.
Temperature and Overdrive (VTH = 4.63 V)
1.3
1.2
1.1
1.0
0.9
0.8
0.7
−50 −25 0 25 50 75 100
TEMPERATURE (°C)
Figure 10. Normalized Power−Up Reset vs.
Temperature
http://onsemi.com
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet NCP803.PDF ] | |
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