LX7001MY Microsemi Corporation, LX7001MY Datasheet

LX7001MY

Manufacturer Part Number

LX7001MY

Description

TRANSIENT IMMUNE UNDERVOLTAGE SENSING CIRCUIT

Manufacturer

Microsemi Corporation

Datasheet

1.LX7001MY.pdf (9 pages)

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Rev. 1.2

H E

The LX7001 is an improved

undervoltage sensing circuit specifi-

cally designed for use as a reset

controller in microprocessor-based

systems. Today's complex miniaturized

systems present difficult challanges to

the system designer such as overcom-

ing spurious noise problems. The

LX7001 is optimized for systems that

must be tolerant of high-speed power

supply glitches caused by high-speed

logic transitions and similar switching

phenomena. The LX7001 offers a

unique stage that couples glitch

immunity with a micropower, ultra-

stable band-gap reference for preci-

sion sensing of undervoltage condi-

tions. It offers the designer an

NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.

6/99

N F I N I T E

100

0.1

100

11861 W

O W E R

-55 to 125

-40 to 85

P R O D U C T H I G H L I G H T

0 to 70

NPUT

) Noise Pulse Amplitude - (mV)

ESTERN

(°C)

IMMUNE

D E S C R I P T I O N

O F

RANSIENT

I N

Note: All surface-mount packages are available in Tape & Reel.

VENUE

PA C K A G E O R D E R I N F O R M A T I O N

Append the letter "T" to part number. (i.e. LX7001CDMT)

N N O V A T I O N

Plastic SOIC

8-pin

I N I T Y

ACTIVE

LX7001CDM

, G

LX7001IDM

economical, space-efficient solution

for low supply voltage detection

when used in combination with a

single pull-up resistor. Adding one

capacitor offers the functionality of a

programmable delay time after power

returns. Additionally, the LX7001

offers excellent temperature stability.

A high-quality trimmed voltage

reference and bias circuit permit very

accurate and repeatable undervoltage

sensing. The remaining blocks

consist of a comparator with hyster-

esis, high current clamping diode and

open collector output stage capable

of sinking up to 60mA. The

LX7001's RESET output is specified to

be fully functional at V

MMUNITY

ARDEN

—

ROVE

I C R O E L E C T R O N I C S

, CA. 92841, 714-898-8121, F

1000

Plastic TO-92

3-pin

LX7001CLP

LX7001ILP

RANSIENT

=1V.

—

R O D U C T I O N

MMUNE

Ceramic Dip

8-pin

LX7001MY

N C

NDERVOLTAGE

! Temperature Compensated I

! µP Reset Function Programmable With 1

! Comparator Hysteresis Prevents Output

! Electrically Compatible With Motorola

! Pin-to-Pin Compatible With Motorola

: 714-893-2570

—

Fully Characterized, Transient Immune

Input Stage

(See Product Highlight)

Monitors 5V Supplies (V

Outputs Fully Defined At V

Ultra-Low Supply Current

(500µA Max. Over Temp)

Stable Current Consumption

External Resistor And Capacitor

Oscillation

MC34064

MC34064/MC34164

All Microprocessor Or Microcontroller

Designs Using 5V Supplies

Simple 5V Undervoltage Detection

K E Y F E AT U R E S

A P P L I C A T I O N S

A T A

ENSING

LX7001

H E E T

TRIP

=4.6V Typ.)

=1V

For Extremely

IRCUIT

Related parts for LX7001MY

LX7001MY Summary of contents

Page 1

... Oscillation ! Electrically Compatible With Motorola MC34064 ! Pin-to-Pin Compatible With Motorola MC34064/MC34164 All Microprocessor Or Microcontroller Designs Using 5V Supplies Simple 5V Undervoltage Detection Ceramic Dip Y 8-pin — — LX7001MY 714-893-2570 AX C IRCUIT =4.6V Typ.) =1V CC For Extremely CC 1 ...

Page 2

LX7001 T RANSIENT ...

Page 3

RANSIENT ...

Page 4

LX7001 T RANSIENT GRAPH / CURVE INDEX Characteristic Curves FIGURE # 1. RESET OUTPUT VOLTAGE vs. ...

Page 5

RANSIENT FIGURE 1. — RESET OUTPUT VOLTAGE vs. INPUT VOLTAGE 10K L ...

Page 6

LX7001 T RANSIENT FIGURE 5. — THRESHOLD HYSTERESIS vs. TEMPERATURE 30 RESET Load = 10K 26 ...

Page 7

RANSIENT FIGURE 9. — LOW LEVEL OUTPUT VOLTAGE vs. LOW LEVEL OUTPUT CURRENT 2000 V ...

Page 8

LX7001 T RANSIENT FIGURE 13. — LOW VOLTAGE MICROPROCESSOR RESET POWER SUPPLY 1.2 V ...

Page 9

RANSIENT ...

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