MIC2775-44BM5TR Micrel Semiconductor, MIC2775-44BM5TR Datasheet
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MIC2775-44BM5TR
Manufacturer Part Number
MIC2775-44BM5TR
Description
Manufacturer
Micrel Semiconductor
Datasheet
1.MIC2775-22BM5TR.pdf
(7 pages)
Specifications of MIC2775-44BM5TR
Date_code
03+
Packing_info
SOT-153
General Description
The MIC2775 is a power supply supervisor that provides
under-voltage monitoring, manual reset capability, and
power-on reset generation in a compact 5-pin SOT package.
Features include an under-voltage detector, a delay genera-
tor, a manual reset input, and both active-high and active-low
reset outputs. The under-voltage detector compares V
against a fixed threshold. Ten factory-programmed thresholds
are available.
The reset outputs are asserted for no less than 140ms at
power-on and any time the input voltage drops below the
reference voltage. It remains asserted for the timeout period
after the input voltage subsequently rises back above the
threshold boundary. A reset can be generated at any time
by asserting the manual reset input, /MR. This reset output
will remain active at least 140ms after the release of /MR.
The /MR input can also be used to daisy-chain the MIC2775
onto existing power monitoring circuitry or other supervisors.
Hysteresis is included to prevent chattering due to noise.
Typical supply current is a low 3.5µA.
Typical Application
IttyBitty™ is a trademark of Micrel, Inc.
November 2005
Micrel, Inc. • 2180Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Ordering Information
Standard
MIC2775-XXBM5
Manual
Reset
1.8V
Marking Pb-Free
UJXX
Part Number
MIC2775-XXYM5
VDD
/MR
MIC2775-17
GND
DD
/RST
RST
1
Features
• Monitors power supply for under-voltage conditions
• Choice of factory-programmed thresholds
• Generates 140ms (minimum) power-on RESET pulse
• Manual reset capability
• Both active-high and active-low RESET outputs
• /RST output valid down to 1.2V
• Ultra-low supply current, 3.5µA typical
• Rejects brief input transients
• No external components
• Pin compatible upgrade for MAX825
• IttyBitty™ 5-pin SOT-23 package
Applications
• Monitoring processor core and input/output voltages
• Computer systems
• PDAs, hand-held PCs
• Embedded controllers
• Telecommunications systems
• Power supplies
MICROPROCESSOR
Marking
UJXX
VDD
/RESET
Micro-Power Voltage Supervisor
GND
Junction Temp. Range
–40ºC to +85ºC
MIC2775
OTHER
LOGIC
SOT-23-5
Package
MIC2775