AP1701/2/3/4
3-PIN MICROPROCESSOR RESET CIRCUITS
General Description
Features
The AP1701/2/3/4 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.
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Precision Monitoring of +2.5V, +3V, +3.3V, and +5V
Power-Supply Voltages
Fully Specified Over Temperature
Available in three Output Configurations
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Push-PullRESET Low Output (AP1701/3)
These circuits perform a single function: they assert a reset
signal whenever the VCC supply voltage declines below a preset
threshold, keeping it asserted for at least 240ms after VCC has
risen above the reset threshold. Reset thresholds suitable for
operation with a variety of supply voltages are available. The
AP1701/2/3/4 have push pull outputs. The AP1701/3 have an
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Push-Pull RESET High Output (AP1702/4)
200ms Min. Power-On Reset Pulse Width
20µA Supply Current (Typ.)
Guaranteed Reset Valid to V = +1V
CC
Power Supply Transient Immunity
No External Components
Green Package: SC59-3L
Lead Free Finish / RoHS Compliant (Note1)
active low RESET output, while the AP1702/4 has an active
high RESET output. The reset comparator is designed to ignore
fast transients on VCC, and the outputs are guaranteed to be in
the correct logic state for VCC down to 1V. Low supply current
makes the AP1701/2/3/4 ideal for use in portable equipment. The
AP1701/2/3/4 is available in a 3-pin SC59 package.
Applications
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Computers
Controllers
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable/Battery Powered Equipment
Automotive
Ordering Information
AP170X X X X X
Lead Free
Enable
Voltage
Package
Packing
A : 4.63
B : 4.38
C : 4.00
D : 3.08
E : 2.93
F : 2.63
G : 2.25
-7 : Taping
W
: SC59
L : Lead Free
G : Green
1 : Active-Low
2 : Active-High
3 : Active-Low
4 : Active-High
Notes: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Package Packaging
7” Tape and Reel
Device
Code
(Note 2)
Quantity
Part Number Suffix
AP170XXW
W
SC59
3000/Tape & Reel
-7
Notes: 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
AP1701/2/3/4 Rev. 2
1 of 9
FEBRUARY 2007
www.diodes.com
© Diodes Incorporated