Microsemi

Carlsbad Division

5973 Aveniva Encinas, Suite 101, Carlsbad 92008, Fax (760) 431-0541

1

Copyright

 2001

Rev. 0.2b, 2002-06-17

LX1801

"SPARK" for MED427A-1

TARGET DATASHEET

CAR L S B A D D IV IS IO N

DESCRIPTION

DESCRIPTION

DESCRIPTION

DESCRIPTION

The MSC-LX1801 is the IC1 "Spark" for the MED427A-1 module. The "Spark"

chip has an oscillator, a voltage doubler, and a level shifter. The oscillator is a

"555" timer variant where the external resistor (Rref) determines the frequency.

The voltage doubler increases the output (OUT) of the oscillator by a factor of 2

(times VDDLO). The voltage doubler also provides a single output voltage if

disabled (EN2x). This level shifter shifts voltage inputs from the lower voltage

(VDDlo) to the higher voltage (VDDhi).

IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com

BLOCK DIAGRAM

BLOCK DIAGRAM

BLOCK DIAGRAM

BLOCK DIAGRAM

Simplified Block Diagram

PACKAGE ORDER INFO

PACKAGE ORDER INFO

PACKAGE ORDER INFO

PACKAGE ORDER INFO

°C)

Package Number

10 to 55

LX1801

KEY FEATURES

KEY FEATURES

KEY FEATURES

KEY FEATURES

•

Low peak current

consumption: <2mA

•

3V operation

•

Small form factor: 1.45mm

2

•

Double/single output voltage

option

•

Solder bumped die

EN2X

OUThi

VSS

Ref

Oscillator

ENlo

VDDlo

OUTlo

ENhi

Level

Shifter

Voltage

Doubler

2x

VDDlo

VDDhi

VSS