APX803-23SA DIODES [Diodes Incorporated], APX803-23SA Datasheet

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APX803-23SA

Manufacturer Part Number
APX803-23SA
Description
er3-PIN MICROPROCESSOR RESET CIRCUIT
Manufacturer
DIODES [Diodes Incorporated]
Datasheet
The APX803/D is 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 on power up and whenever the V
declines below a preset threshold, keeping it asserted for a
fixed period of time after V
threshold. For the APX803D this period is a minimum of 1ms
while for other APX803 variants it is at least 140ms. The reset
comparator is designed to ignore fast transients on V
the outputs are guaranteed to be in the correct logic state for
V
The APX803 is available with different reset thresholds
suitable for operation with a variety of supply voltages,
however the APX803D is available with a 2.93V threshold
voltage.
The APX803/D have an open collector active low
output and compliment Diodes APX809/10 which have push-
pull output stages.. Low supply current makes the APX803/D
ideal for use in portable equipment. The APX803/D are
available in two pin out variants of the 3-pin SOT23 package.
Features
Description
Notes:
APX803
Document number: DS32132 Rev. 2 - 2
CC
Precision Monitoring of +2.5V, +3V, +3.3V, and +5V
Power-Supply Voltages
Fully Specified Over Temperature
Open-drain
Power-On/power supply glitch Reset Pulse
30µA Supply Current (Typ.)
Guaranteed Reset Valid to VCC = +1V
No External Components
SOT23 and SOT23R: Available in “Green” Molding
Compound (No Br, Sb)
Lead Free Finish/ RoHS Compliant (Note 1)
down to 1V.
APX803D
APX803
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
RESET
2ms (Typ)
200ms (Typ)
Active Low
CC
has risen above the reset
CC
supply voltage
RESET
CC
www.diodes.com
, and
1 of 11
3-PIN MICROPROCESSOR RESET CIRCUIT
Pin Assignments
Applications
Computers
Controllers
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable/Battery Powered Equipment
RESET
RESET
GND
GND
1
1
2
2
2
2
( Top View )
( Top View )
APX803
APX803
SOT23R
SOT23
APX803/D
3
3
© Diodes Incorporated
September 2010
V
V
CC
CC

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APX803-23SA Summary of contents

Page 1

... V has risen above the reset CC threshold. For the APX803D this period is a minimum of 1ms while for other APX803 variants least 140ms. The reset comparator is designed to ignore fast transients on V the outputs are guaranteed the correct logic state for V down to 1V ...

Page 2

... Oscillator REF REF APX803 Document number: DS32132 Rev 3-PIN MICROPROCESSOR RESET CIRCUIT V CC APX803 Microprocessor RESET RESET INPUT GND Delay time Delay time APX803/D APX803 www.diodes.com APX803 GND RESET RESET RESET September 2010 © Diodes Incorporated ...

Page 3

... V Rate of rise ( APX803 Document number: DS32132 Rev 3-PIN MICROPROCESSOR RESET CIRCUIT Parameter = +70°C), de- A Parameter Min 1.1 - www.diodes.com APX803/D Rating Unit 2 kV 200 V -0.3 to +6 400 mW -40 to +105 °C -65 to +150 °C Max Unit 5 ...

Page 4

... APX803-23 APX803-26 APX803-29 APX803D-29 Reset Threshold APX803- APX803-40 APX803-44 APX803-46 Reset Threshold hysteresis Reset Threshold Tempco RESET delay S CC APX803-XX Reset Active t DELAY Timeout Period APX803D-29 V RESE T Output Voltage Low OL RESE T Output High leakage I OH current Thermal Resistance Junction-to- θ ...

Page 5

... RESET Timeout Period vs. Temperature 3.00 APX803D 2.80 2.60 2.40 2.20 2.00 1.80 1.60 1.40 1.20 1. 100 - 100 www.diodes.com APX803/D APX803- 100 Temperature (°C) Figure 2 - 100 Temperature (°C) Figure 4 Supply Current vs. Vcc Vcc(V) Figure 6 September 2010 © Diodes Incorporated 6 ...

Page 6

... Nch Driver Output Current vs APX803- Vcc= 1.5V 0 0.0 0.5 1.0 1.5 V (V) DS Figure 9 APX803 Document number: DS32132 Rev 3-PIN MICROPROCESSOR RESET CIRCUIT (Continued) 60 APX803- -40º 85º 2.0 2.5 3.0 0.0 Nch Driver Output Current vs 100 APX803- Vcc= 2. Vcc= 2 ...

Page 7

... V has risen above the reset threshold. For CC the APX803D this period is a minimum of 1ms while for other APX803 variants least 140ms. The APX803/D have an open-drain output stage. Ensuring a Valid Reset Output ...

Page 8

... APX803-XXSRG-7 SR APX803D-29SAG-7 SA APX803D-29SRG-7 SR Notes: 4. 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. APX803 Document number: DS32132 Rev 3-PIN MICROPROCESSOR RESET CIRCUIT APX Voltage Package Green SOT23 G : Green SR : SOT23R ...

Page 9

... Marking Information (1) SOT23 and SOT23R ( Top View ) Device APX803-46SA APX803-44SA APX803-40SA APX803-31SA APX803-29SA APX803-26SA APX803-23SA APX803-46SR APX803-44SR APX803-40SR APX803-31SR APX803-29SR APX803-26SR APX803-23SR APX803D-29SA APX803D-29SR APX803 Document number: DS32132 Rev 3-PIN MICROPROCESSOR RESET CIRCUIT Identification code Y : Year 0 Week : A~Z : 1~26 week; ...

Page 10

... Package Type: SOT23 and SOT23R Notes: 5. Package outline dimensions as shown on Diodes Inc. package outline dimensions document AP02002, which can be found on our website at http://www.diodes.com/datasheets/ap02002.pdf APX803 Document number: DS32132 Rev 3-PIN MICROPROCESSOR RESET CIRCUIT (All Dimensions in mm www.diodes.com APX803/D September 2010 © Diodes Incorporated ...

Page 11

... Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2010, Diodes Incorporated www.diodes.com APX803 Document number: DS32132 Rev 3-PIN MICROPROCESSOR RESET CIRCUIT IMPORTANT NOTICE LIFE SUPPORT www.diodes.com APX803/D September 2010 © Diodes Incorporated ...

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