MIC842LYC5TR Micrel Semiconductor, MIC842LYC5TR Datasheet

MIC842LYC5TR

Manufacturer Part Number

MIC842LYC5TR

Description

Manufacturer

Micrel Semiconductor

Datasheet

1.MIC841HBC5TR.pdf (8 pages)

Specifications of MIC842LYC5TR

Date_code

06+

Packing_info

SOT-353

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Bonase Electronics (HK) Co., Limited

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MIC842LYC5TR

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MIC842LYC5TR

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General Description

The MIC841 and MIC842 are micropower, precision voltage

comparators with an on-chip voltage reference.

Both devices are intended for voltage monitoring applications.

External resistors are used to set the voltage monitor threshold.

When the threshold is crossed, the outputs switch polarity.

The MIC842 incorporates a voltage reference and comparator

with fixed internal hysteresis; two external resistors are used to

set the switching threshold voltage. The MIC841 provides a

similar function with user adjustable hysteresis; this part re-

quires three external resistors to set the upper and lower

thresholds (the difference between the threshold voltages

being the hysteresis voltage).

Both the MIC841 and MIC842 are available with push-pull or

open-drain output stage. The push-pull output stage is config-

ured either active high or active low; the open-drain output stage

is only configured active high.

Supply current is extremely low (1.5µA, typical), making it ideal

for portable applications.

The MIC841/2 is supplied in Micrel’s Teeny™ 5-lead SC-70

package.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

Typical Application

Teeny™ is a trademark of Micrel, Inc.

January 2005

MIC841/2

Threshold Detection with Hysteresis Set by a Third

Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

External Resistor

VDD

LTH

HTH

MIC841

GND

OUT

1.5V ≤ V

OUT

LTH

REF

> V

= 1.24V

HTH

≤ 5.5V

Features

• Optimized for PDAs, cellular telephones, pagers,

• Output can be pulled up to 6V regardless of supply

• High ±1.25% voltage threshold accuracy

• Built in hysteresis for noise suppression

• Extremely low 1.5µA typical supply current

• Immune to brief input transients

• Teeny™ 5-lead SC-70 package

Applications

• PDAs

• Pagers

• Cordless phones

• Consumer electronics

• Embedded controllers

• Personal electronics

and other battery-powered devices

voltage (841NBC5 only)

(MIC842)

Threshold Detector with Internal Fixed Hysteresis

Comparator with Reference

MIC841/842

VDD

INP

MIC842

GND

OUT

1.5V ≤ V

OUT

REF

= 1.24V

Teeny™

MIC841/2

≤ 5.5V

Micrel

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