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MIC811RU

Description
1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4
CategoryPower/power management    The power supply circuit   
File Size213KB,7 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Download Datasheet Parametric View All

MIC811RU Overview

1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4

MIC811RU Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerMicrochip
Parts packaging codeSOT-143
package instructionTSOP, TO-253
Contacts4
Reach Compliance Codecompli
ECCN codeEAR99
Other featuresMANUAL RESET INPUT
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDSO-G4
JESD-609 codee0
length2.86 mm
Humidity sensitivity level1
Number of channels1
Number of functions1
Number of terminals4
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeTSOP
Encapsulate equivalent codeTO-253
Package shapeRECTANGULAR
Package formSMALL OUTLINE, THIN PROFILE
Peak Reflow Temperature (Celsius)240
power supply3 V
Certification statusNot Qualified
Maximum seat height1.12 mm
Maximum supply current (Isup)0.01 mA
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)1 V
Nominal supply voltage (Vsup)3 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn85Pb15)
Terminal formGULL WING
Terminal pitch1.9 mm
Terminal locationDUAL
Threshold voltage nominal+2.63V
Maximum time at peak reflow temperature30
width1.3 mm
MIC811/812
Micrel
MIC811/812
Microprocessor Reset Circuits
General Description
The MIC811 and MIC812 are inexpensive microprocessor
supervisory circuits that monitor power supplies in micropro-
cessor based systems.
The function of this device is to assert a reset if either the
power supply drops below a designated reset threshold
level or /MR is forced low. Several different reset threshold
levels are available to accommodate 3V, 3.3V or 5V powered
systems.
The MIC811 has an active low /RESET output, while the
MIC812 offers an active high RESET output. The reset output
is guaranteed to remain asserted for a minimum of 140ms
after V
CC
has risen above the designed reset threshold level.
Having a push-pull output stage, the MIC811/812 does not
require a pull-up resistor at the output. The MIC811/812
comes in a 4-pin SOT-143 package.
If a microprocessor voltage supervisor with an open-drain
output stage is needed, see MIC6315.
Features
• Precision voltage monitor for 3V, 3.3V or 5V power sup-
plies
• /RESET remains valid with V
CC
as low as 1V
• 5µA typical supply current
• 140ms minimum reset pulse width available
• Manual reset input
• Available in 4-pin SOT-143 package
Applications
Portable equipment
Intelligent instruments
Critical microprocessor power monitoring
Printers/computers
Embedded controllers
Typical Application
VCC
VCC
VCC
MIC81 1
MR
µP
RESET
RESET
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
September 2005
1
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