Datasheet Microchip MIC1810

Manufacturer	Microchip
Series	MIC1810

The MIC1810 is an inexpensive microprocessor supervisory circuit that monitors power supplies in microprocessor based systems

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MIC1810 Micrel MIC1810
Microprocessor Reset Circuit General Description Features The MIC1810 is an inexpensive microprocessor supervisory
circuit that monitors power supplies in microprocessor based
systems.
The function of these devices is to assert a reset if the power
supply drops below a designated reset threshold level. Several
different reset threshold levels are available to accommodate
5%, 10%, or 15% drop in 5V powered systems.
The MIC1810 has an active low /RESET output. The reset
output is guaranteed to remain asserted for a minimum of
100ms after VCChas risen above the designated reset threshold level. The MIC1810 comes in a 3-pin SOT-23 package. Precision voltage monitor for 5%, 10%, or 15% drop in
5V power supplies /RESET remains valid with VCC as low as 1V 5ВµA supply current (typical) 100ms minimum reset pulse width No external components required Available in 3-pin SOT-23 package Ordering Information Applications Portable equipment
Intelligent instruments
Critical microprocessor power monitoring
Printers/computers
Embedded controllers Marking* Threshold
Voltage Operating Temp. Range Package Pb-Free MIC1810-5U NA 4.62V вЂ“40В°C to +85В°C SOT-23 No MIC1810-10U NB 4.37V вЂ“40В°C to +85В°C SOT-23 No MIC1810-15U NC 4.12V вЂ“40В°C to +85В°C SOT-23 No MIC1810-5UY NA 4.62V вЂ“40В°C to +85В°C SOT-23 Yes Part Number MIC1810-10UY NB 4.37V вЂ“40В°C to +85В°C SOT-23 Yes MIC1810-15UY NC 4.12V вЂ“40В°C to +85В°C SOT-23 Yes * Underbar symbol may not be to scale Typical Application VCC VCC VCC MIC1810 ВµP 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 July 2005 1 MIC1810 MIC1810 Micrel Pin Conп¬Ѓguration RESET 1 MIC1810 3 GND VCC 2 3-Lead SOT-23 Pin Description
Pin Number Pin Name 1 /RESET MIC1810 Pin Function
/RESET goes low if VCC falls below the reset threshold and remains asserted for one reset timeout period (100ms min) after VCC exceeds the reset
threshold. 2 VCC Power supply input. 3 GND IC ground pin 2 July 2005 MIC1810 Micrel Absolute Maximum Ratings(Note 1) Operating Ratings(Note 2) Terminal Voltage (VCC) .вЂ“0.3V to +6V
Input Current (VCC). 20mA
Output Current, /RESET . 20mA
Rate of Rise (VCC) . 100V/Вµs …

Status

	MIC1810-10UY-TR	MIC1810-15UY-TR	MIC1810-5UY-TR
Lifecycle Status	Production (Appropriate for new designs but newer alternatives may exist)	Production (Appropriate for new designs but newer alternatives may exist)	Production (Appropriate for new designs but newer alternatives may exist)

Packaging

	MIC1810-10UY-TR	MIC1810-15UY-TR	MIC1810-5UY-TR
N	1	2	3
Package	SOT-23	SOT-23	SOT-23
Pins	3	3	3

Parametrics

Parameters / Models	MIC1810-10UY-TR	MIC1810-15UY-TR	MIC1810-5UY-TR
Manual Reset	No	No	No
Nominal Reset Voltage, V	4.12, 4.37, 4,62	4.12, 4.37, 4,62	4.12, 4.37, 4,62
Operating Temp. Range, °C	-40 to 85	-40 to 85	-40 to 85
Operating Temperature Range, °C	-40 to +85	-40 to +85	-40 to +85
Output	Push-Pull	Push-Pull	Push-Pull
Power Fail	No	No	No
Product Type	Supervisor	Supervisor	Supervisor
Reset Type	Active Low	Active Low	Active Low
Typical Reset Pulse Width, ms	100	100	100
Typical Supply Current, µA	5	5	5
VCC Range, V	1.5 - 5.5	1.5 - 5.5	1.5 - 5.5
Watchdog Timer	No	No	No

Eco Plan

	MIC1810-10UY-TR	MIC1810-15UY-TR	MIC1810-5UY-TR
RoHS	Compliant	Compliant	Compliant

Model Line

Series: MIC1810 (3)

MIC1810-10UY-TR MIC1810-15UY-TR MIC1810-5UY-TR

Manufacturer's Classification

Power Management > Voltage Detectors