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Microsemi Corporation - 1A BiCMOS Very Low Dropout Regulators

Numéro de référence LX8610-00CDM
Description 1A BiCMOS Very Low Dropout Regulators
Fabricant Microsemi Corporation 
Logo Microsemi Corporation 





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LX8610-00CDM fiche technique

A MICROSEMI COMPANY
LX8610-xx
1A BiCMOS Very Low Dropout Regulators
PRELIMINARY DATASHEET

The LX8610 family are positive
very low dropout regulators. They are
designed to provide a power supply for
very low headroom applications, such as
3.3V– 2.5V.
BiCMOS technology allows an
effective series pass element resistance,
RDS(ON) of 250m     
dropout voltage of 250mV at 1A.
Low Quiescent Current and Logic-
Controlled Shutdown help conserve
battery life and increase system
efficiency. Typical quiescent current is
under 400µA irrespective of load
current, while the shutdown current is
only 10µA. The device will enter
shutdown mode when the ENABLE pin
is pulled low.
Thermal & Short-Circuit Current
Limiting: the LX8610 limits the current
when the output is shorted, so protecting
sensitive load circuits. The device will
also turn off if the junction temperature
exceeds 155°C.
Available in small outline SOT-223
and 8-pin SOIC: Adjustable versions
use the 8-pin SOIC and fixed output
voltage devices are supplied in the 3-lead
SOT-223.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
 
 Dropout Voltage Typically
250mA At 1A And 50mV At
10mA
 Low Quiescent Current,
Under 400µA, Irrespective
Of Load
 Shutdown Current 10µA
 Adjustable Output Version In
8-pin SOIC Package
 Fixed Outputs Of 2.5V, 3.3V
Available In 3-Pin SOT-223
Package
 Low Reverse Leakage
Current
 Short-Circuit And Thermal
Shutdown Protection
  
 3.3V & 2.5V Supplies For
Memory, Microprocessors,
Clock Circuits, Etc.
 Portable Equipment
  
LX8610-xx Sim plified Block Diagram
V IN
Reference
Current
Current
Lim it
Charge
Pum p
RA
VOUT
ADJ*
Copyright © 2000
Rev. 0.6f,2000-09-15
ENABLE*
V /2
IN
1.25V
R
B
GND
Reverse
V o lta g e
Sense
Therm al
Shutdown
LX8610-00
LX8610-25
LX8610-33
R
A
-
25K
41K
RB
-
25K
25K
* Adjustable 8 lead version only
   
TJ (°C)
0 to 125°C
OUTPUT ST PLASTIC SOT-233 DM Plastic SOIC
VOLTAGE
3-PIN
8-PIN
3.3
LX8610-33CST
LX8610-33CDM
2.5
LX8610-25CST
LX8610-25CDM
ADJ (00)
LX8610-00CDM
Note: Available in Tape & Reel.
Append the letter “T” to the part number. (i.e. LX8610CDMT)
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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