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MIC2777-28BM5

Description
Power Supply Support Circuit Adjustable 2 Channel PDSO5
CategoryPower/power management    The power supply circuit   
File Size46KB,8 Pages
ManufacturerMicrel ( Microchip )
Websitehttps://www.microchip.com
Download Datasheet Parametric Compare View All

MIC2777-28BM5 Overview

Power Supply Support Circuit Adjustable 2 Channel PDSO5

MIC2777-28BM5 Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerMicrel ( Microchip )
package instructionSOT-23, 5 PIN
Reach Compliance Code_compli
Factory Lead Time1 week
Other featuresNOMINAL THRESHOLDVOLTAGE IS 2.81; MANUAL RESET INPUT
Adjustable thresholdYES
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDSO-G5
JESD-609 codee0
length2.9 mm
Humidity sensitivity level1
Number of channels2
Number of functions1
Number of terminals5
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeLSSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)240
Certification statusNot Qualified
Maximum seat height1.45 mm
Maximum supply voltage (Vsup)3.15 V
Minimum supply voltage (Vsup)2.85 V
Nominal supply voltage (Vsup)3 V
surface mountYES
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn85Pb15)
Terminal formGULL WING
Terminal pitch0.95 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width1.6 mm
MIC2777
Micrel
MIC2777
Dual Micro-Power Low Voltage Supervisor
General Description
The MIC2777 is a dual power supply supervisor that provides
under-voltage monitoring, manual reset capability, and power-
on reset generation in a compact 5-pin SOT package. Fea-
tures include two under-voltage detectors, one fixed and one
adjustable, and both active-high and active-low reset out-
puts. One under-voltage detector compares V
DD
against a
fixed threshold. Ten factory-programmed thresholds are avail-
able. The other under-voltage detector is user-adjustable.
The reset outputs are asserted for no less than 140ms at
power-on and any time V
DD
or the input voltage drops below
the corresponding reference voltage. They remain asserted
for the timeout period after the input voltage and V
DD
subse-
quently rise back above the threshold boundaries. A reset
can be generated at any time by pulling down on the adjust-
able input. Hysteresis is included to prevent chattering due to
noise. Typical supply current is a low 3.5µA.
Features
• Monitors two independent power supplies for under-
voltage conditions
• One fixed and one user adjustable input
• 1.5% theshold accuracy
• Choice of factory-programmed thresholds
• User-adjustable input can monitor supplies as low as
0.3V
• Generates 140ms (minimum) power-on RESET pulse
• Manual reset capability
• Both active-high and active-low RESET outputs
• Input may be pulled above V
DD
(abs. max.)
• /RST output valid down to 1.2V
• Ultra-low supply current, 3.5µA typical
• Rejects brief input transients
• IttyBitty™ 5-lead SOT-23 package
Applications
• Monitoring processor, ASIC, or FPGA core and I/O
voltages
• Computer systems
• PDAs, hand-held PCs
• Embedded controllers
• Telecommunications systems
• Power supplies
• Wireless / Cellular systems
• Networking hardware
Ordering Information
Part Number
MIC2777-XXBM5
Marking
UNXX
Junction Temp. Range
–40°C to +85°C
Package
SOT-23-5
Typical Application
V
CORE
1.0V
MICROPROCESSOR
V
CORE
V
I/O
MIC2777
VDD /RST
IN
R2
RST
/RESET
GND
V
I/O
1.8V
R1
GND
Manual
Reset
OTHER
LOGIC
Typical Application
IttyBitty™ is a trademark of Micrel, Inc.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
September 2000
1
MIC2777

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Description Power Supply Support Circuit Adjustable 2 Channel PDSO5 Power Supply Support Circuit Adjustable 2 Channel PDSO5 Power Supply Support Circuit Adjustable 2 Channel PDSO5 Power Supply Support Circuit, Adjustable, 2 Channel, PDSO5, SOT-23, 5 PIN Power Supply Support Circuit Adjustable 2 Channel PDSO5
Is it Rohs certified? incompatible incompatible incompatible incompatible incompatible
Maker Micrel ( Microchip ) Micrel ( Microchip ) Micrel ( Microchip ) Micrel ( Microchip ) Micrel ( Microchip )
package instruction SOT-23, 5 PIN SOT-23, 5 PIN SOT-23, 5 PIN SOT-23, 5 PIN SOT-23, 5 PIN
Reach Compliance Code _compli not_compliant not_compliant _compli _compli
Other features NOMINAL THRESHOLDVOLTAGE IS 2.81; MANUAL RESET INPUT NOMINAL THRESHOLDVOLTAGE IS 2.25; MANUAL RESET INPUT NOMINAL THRESHOLDVOLTAGE IS 2.53; MANUAL RESET INPUT NOMINAL THRESHOLDVOLTAGE IS 3.09; MANUAL RESET INPUT NOMINAL THRESHOLDVOLTAGE IS 4.43; MANUAL RESET INPUT
Adjustable threshold YES YES YES YES YES
Analog Integrated Circuits - Other Types POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code R-PDSO-G5 R-PDSO-G5 R-PDSO-G5 R-PDSO-G5 R-PDSO-G5
JESD-609 code e0 e0 e0 e0 e0
length 2.9 mm 2.9 mm 2.9 mm 2.9 mm 2.9 mm
Humidity sensitivity level 1 1 1 1 1
Number of channels 2 2 2 2 2
Number of functions 1 1 1 1 1
Number of terminals 5 5 5 5 5
Maximum operating temperature 85 °C 85 °C 85 °C 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C -40 °C -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code LSSOP LSSOP LSSOP LSSOP LSSOP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, LOW PROFILE, SHRINK PITCH SMALL OUTLINE, LOW PROFILE, SHRINK PITCH SMALL OUTLINE, LOW PROFILE, SHRINK PITCH SMALL OUTLINE, LOW PROFILE, SHRINK PITCH SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius) 240 240 240 240 240
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 1.45 mm 1.45 mm 1.45 mm 1.45 mm 1.45 mm
Maximum supply voltage (Vsup) 3.15 V 2.52 V 2.835 V 3.465 V 5.5 V
Minimum supply voltage (Vsup) 2.85 V 2.28 V 2.565 V 3.135 V 4.5 V
Nominal supply voltage (Vsup) 3 V 2.4 V 2.7 V 3.3 V 5 V
surface mount YES YES YES YES YES
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal surface Tin/Lead (Sn85Pb15) Tin/Lead (Sn85Pb15) Tin/Lead (Sn85Pb15) Tin/Lead (Sn85Pb15) Tin/Lead (Sn85Pb15)
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal pitch 0.95 mm 0.95 mm 0.95 mm 0.95 mm 0.95 mm
Terminal location DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 30 30 30 30 30
width 1.6 mm 1.6 mm 1.6 mm 1.6 mm 1.6 mm
Factory Lead Time 1 week 1 week 1 week - 1 week
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