LX1801 Datasheet, PDF (1/4 Pages) Microsemi Corporation – SPARK for MED427A-1

LX1801
CARLSBAD DIVISION
"SPARK" for MED427A-1
TARGET DATASHEET
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).
KEY FEATURES
• Low peak current
consumption: <2mA
• 3V operation
• Small form factor: 1.45mm²
• Double/single output voltage
option
• Solder bumped die
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
BLOCK DIAGRAM
EN2X
VDDlo
Ref
R_REF
ENhi
VDDhi
ENlo
VSS
Oscillator
Voltage
Doubler
2x
VSS
VDDlo
Level
Shifter
OUThi
OUTlo
Simplified Block Diagram
PACKAGE ORDER INFO
T_J (°C)
10 to 55
Package Number
LX1801
Copyright  2001
Microsemi
1
Rev. 0.2b, 2002-06-17
Carlsbad Division
5973 Aveniva Encinas, Suite 101, Carlsbad 92008, Fax [phone]