APX811-XXUG-7 DIODES [Diodes Incorporated], APX811-XXUG-7 Datasheet

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APX811-XXUG-7

Manufacturer Part Number
APX811-XXUG-7
Description
4-Pin Microprocessor Supervisor With Manual Reset
Manufacturer
DIODES [Diodes Incorporated]
Datasheet
Features
Applications
Typical Application Circuit
APX811/812 Rev. 2
DS31960
Precision Monitor of(2.5V/3.0V/3.3V/5.0V) power
supply voltage
Full specified over temperature
Manual reset input
Available in four output configuration
Push-pull
Push-pull RESET Active high(APX812)
Power-on reset generator with fixed delay time 200ms
SOT143: Available in “Green” Molding Compound
Lead Free Finish/RoHS Compliant (Note 1)
Computers
Controllers
Intelligent Instruments
Critical uP and UC power Monitoring
Portable/Battery powered Equipment
Automotive
(No Br, Sb)
(Manual Reset)
Push Botton
RESET
Vcc
Active low(APX811)
MR
4-Pin Microprocessor Supervisor With Manual Reset
www.diodes.com
APX811/APX812
1 of 10
GND
Vcc
General Description
The APX811/812 are used for microprocessor supervisory circuit
to monitor the power supplies in These circuit 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 APX811/812 have push-pull outputs.
The APX811 has an active low
APX812 has an active high RESET output.
The APX811/812 devices incorporate a manual reset input,
A low level at
The APX811/2 are targeted at 2.5V, 3V, 3.3V and 5V powered
systems and are available with different threshold voltages to
meet the exact needs of the system. They are available in the
space saving SOT143 package and operate over the whole
industrial temperature range, -40 to 85°C.
(RESET)
RESET
MR
causes RESET to become active.
RESET Input
MCU
APX811/812
GND
Vcc
RESET
©
OCTOBER 2009
Diodes Incorporated
output, while the
MR
.

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APX811-XXUG-7 Summary of contents

Page 1

... MR A low level at causes RESET to become active. The APX811/2 are targeted at 2.5V, 3V, 3.3V and 5V powered systems and are available with different threshold voltages to meet the exact needs of the system. They are available in the space saving SOT143 package and operate over the whole industrial temperature range, -40 to 85° ...

Page 2

... Ordering Information Enable 11 : Active-Low 12 : Active-High Package Device Code APX811-XXUG-7 U APX812-XXUG-7 U Notes Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www ...

Page 3

... CC I Output current O P Power dissipation D Recommended Operating Conditions Symbol V Supply Voltage CC V Input Voltage IN T Operating Ambient Temperature A APX811/812 Rev. 2 DS31960 4-Pin Microprocessor Supervisor With Manual Reset Delay Circuit MR Parameter Parameter www.diodes.com APX811/812 Driver RESET Rating Unit 3 kV 500 V -0 ...

Page 4

... Thermal Resistance θ JC Junction-to-Case Notes: 3. Test condition for SOT143: Device mounted on FR-4 substrate, 1"*1", 2oz, copper, single-sided, PC boards. Timing requirements Symbol Parameter t Pulse Width APX811/812 Rev. 2 DS31960 4-Pin Microprocessor Supervisor With Manual Reset (T = 25º =+ Test Conditions V + 0.2V ...

Page 5

... Propagation (Delay) Time, t PLH Low-to-high-level Output Timing Diagram Vth Vcc Vth t d /RESET Vth t d RESET Vth Vcc / /RESET APX811/812 Rev. 2 DS31960 4-Pin Microprocessor Supervisor With Manual Reset Test Conditions V > V +0.2V APX811/812 See timing diagram V > V +0.2V, th ...

Page 6

... Vcc Supply Current vs. Temperature (Vcc=3.3V Vth=2.93V -40℃ -25℃ 0℃ 25℃ 50℃ 85℃ 105℃ 125℃ Temperature APX811/812 Rev. 2 DS31960 4-Pin Microprocessor Supervisor With Manual Reset RESET Threshold Voltage vs. Temperature 3.2 3.15 3.1 3.05 3 2.95 2.9 2.85 2.8 -40℃ -25℃ 0℃ ...

Page 7

... Application Information A microprocessor’s (µP’s) reset input starts the µ known state. The APX811/812 asserts reset to prevent code-execution errors during power-up, power-down, or brownout conditions. They assert a reset signal whenever the V MR preset threshold or the pin is brought low, keeping it asserted for at least 240ms after V APX811/812 have a push-pull output stage ...

Page 8

... Device APX811-46U APX811-44U APX811-40U APX811-31U APX811-29U APX811-26U APX811-23U APX812-46U APX812-44U APX812-40U APX812-31U APX812-29U APX812-26U APX812-23U APX811/812 Rev. 2 DS31960 4-Pin Microprocessor Supervisor With Manual Reset Identification code Y : Year 0 Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : A~Z : Green 2 Package Identification Code SOT143 SOT143 SOT143 ...

Page 9

... Package Information (1) Package Type: SOT143 1.78/2.03 1.58/1.83 0.77/0.93 0.37/0.51 2.80/3.0 APX811/812 Rev. 2 DS31960 4-Pin Microprocessor Supervisor With Manual Reset (All Dimensions in mm) 0.45/0.6 0.46/0 www.diodes.com APX811/812 OCTOBER 2009 © Diodes Incorporated ...

Page 10

... 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 © 2009, Diodes Incorporated www.diodes.com APX811/812 Rev. 2 DS31960 4-Pin Microprocessor Supervisor With Manual Reset IMPORTANT NOTICE ...

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