MIC2775-44YM5TR Micrel Semiconductor, MIC2775-44YM5TR Datasheet

MIC2775-44YM5TR

Manufacturer Part Number

MIC2775-44YM5TR

Description

Manufacturer

Micrel Semiconductor

Datasheet

1.MIC2775-44YM5TR.pdf (7 pages)

Specifications of MIC2775-44YM5TR

Date_code

06+

Packing_info

SOT-153

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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.

June 2009

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

/RST

RST

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

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