LX8630-XX Datasheet, PDF (1/9 Pages) Microsemi Corporation – 3A BiCMOS Very Low Dropout Regulators


A MICROSEMI COMPANY
LX8630-xx
3A BiCMOS Very Low Dropout Regulators
PRODUCTION DATA SHEET


The LX8630 family are positive very Shut       
low dropout regulators. They are device will enter shutdown mode when the
designed to provide a power supply for SHDN pin is pulled low.
very low headroom applications, such as Thermal and Short-Circuit Current
3.3V – 2.5V.
Limiting: the LX8630 limits the current
BiCMOS technology allows an when the output is shorted, protecting the
effective series pass element resistance, sensitive load circuits. The device will
R_DS(ON) of 150m
      also turn off if the junction temperature
dropout voltage of 450mV at 3A.
exceeds 150°
Low Quiescent Current and Logic- Available in Popular TO-220 and
Controlled Shutdown help conserve TO-263 Power Packages: adjustable
battery life and increase system efficiency. versions have five leads, and fixed output
Typical quiescent current is under 400
A voltage devices are supplied in three lead
irrespective of load current, while the
packages.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com

 
LX8630-xx Sim plified Block Diagram
V _IN
Current
Lim it
Reference
Current
R_A
Charge
Pum p
 

Dropout Voltage Typically
450mV at 3A and 50mV at
10mA

Low Quiescent Current,
Typically Under 400µA,
irrespective of Load

Shutdown Current 10µA

Adjustable Output Version in
5-Pin TO-220 & TO-263
Packages

Low Reverse Leakage
Current

Short-Circuit and Thermal
Shutdown Protection
  

3.3V & 2.5V Supplies for
Memory, Microprocessors,
Clock Circuits, Etc.

Portable Equipment
V
OUT
ADJ*
SHDN*
1.25V
+ ^RB
-
V _IN/2
Reverse
Voltage
Sense
T herm al
Shutdown
LX8630-00
LX8630-25
LX8630-33
R
A
-
25K
41K
R
B
-
25K
25K
* Adjustable 5 lead ve rsion only
GND
T_A (°C)
Output
Voltage
3.3
0 to 125 2.5
ADJ(00)

    
Plastic TO-220
Plastic TO-220
Plastic TO-263
Plastic TO-263
P _3-Pin
P _5-Pin
DD _3-Pin
DD _5-Pin
LX8630-33CP
LX8630-25CP
-
-
-
LX8630-00CP
LX8630-33CDD
LX8630-25CDD
-
-
-
LX8630-00CDD
Note: Available in Tape & Reel.
Append the letter “T” to the part number. (i.e. LX8630-33CDDT)
Copyright © 2000
Rev. 1.0a,2000-11-28
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
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