Diodes APX809/810 User Manual
Features, General description, Applications

APX809/810
3-PIN MICROPROCESSOR RESET CIRCUITS
APX809/810 Rev. 4
1 of 9
FEBRUARY 2009
©
Diodes Incorporated
•
Precision Monitoring of +2.5V, +3V, +3.3V, and +5V
Power-Supply Voltages
•
Fully Specified Over Temperature
•
Available in three Output Configurations
• Push-Pull
RESET
Active Low (APX809)
• Push-Pull
RESET
Active High (APX810)
•
200ms Typ Power-On Reset Pulse Width
•
30µA Supply Current (Typ.)
•
Guaranteed Reset Valid to V
CC
= +1V
• No
External
Components
•
SOT23 and SOT23R: Available in “Green” Molding
Compound (No Br, Sb)
•
Lead Free Finish/RoHS Compliant (Note 1)
The APX809/810 are used for microprocessor (µP) supervisory
circuits to monitor the power supplies in µP and digital systems.
They provide excellent circuit reliability and low cost by
eliminating external components and adjustments when used
with +5V, +3.3V, +3.0V powered circuits.
These circuits perform a single function: they assert a reset
signal whenever the V
CC
supply voltage declines below a preset
threshold, keeping it asserted for at least 240ms after V
CC
has
risen above the reset threshold. Reset thresholds suitable for
operation with a variety of supply voltages are available. The
APX809/810 have push pull outputs. The APX809 have an active
low
RESET
output, while the APX810 has an active high
RESET output. The reset comparator is designed to ignore fast
transients on V
CC
, and the outputs are guaranteed to be in the
correct logic state for V
CC
down to 1V. Low supply current makes
the APX809/810 ideal for use in portable equipment. The
APX809/810 is available in a 3-pin SOT23 and SOT23R
packages.
• Computers
• Controllers
• Intelligent
Instruments
•
Critical µP and µC Power Monitoring
• Portable/Battery
Powered
Equipment
• Automotive
APX 8 XX - XX XX G - 7
Voltage
Package
Packing
7 : Tape & Reel
Enable
Green
G : Green
SA : SOT23
SR : SOT23R
46 : 4.63
44 : 4.38
40 : 4.00
31 : 3.08
29 : 2.93
26 : 2.63
23 : 2.25
09 : Active-Low
10 : Active-High
Device
Package
Code
Packaging
(Note 2)
7” Tape and Reel
Quantity
Part Number Suffix
APX809-XXSAG-7
SA
SOT23
3000/Tape & Reel
-7
APX810-XXSAG-7
SA
SOT23
3000/Tape & Reel
-7
APX809-XXSRG-7
SR
SOT23R
3000/Tape & Reel
-7
APX810-XXSRG-7
SR
SOT23R
3000/Tape & Reel
-7
Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
Features
General Description
Applications
Ordering Information