LX8630-00CP MICROSEMI [Microsemi Corporation], LX8630-00CP Datasheet

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LX8630-00CP

Manufacturer Part Number
LX8630-00CP
Description
3A BiCMOS Very Low Dropout Regulators
Manufacturer
MICROSEMI [Microsemi Corporation]
Datasheet
Copyright
Rev. 1.0a,2000-11-28
A
effective series pass element resistance,
R
dropout voltage of 450mV at 3A.
Controlled Shutdown help conserve
battery life and increase system efficiency.
Typical quiescent current is under 400
irrespective of load current, while the
low dropout regulators.
designed to provide a power supply for
very low headroom applications, such as
3.3V – 2.5V.
IMPORTANT: For the most current data, consult MICROSEMI ’s website: http://www.microsemi.com
DS(ON)
M I C R O S E M I
BiCMOS
Low Quiescent Current and Logic-
The LX8630 family are positive very
0 to 125
2000
T
of 150m
A
( C)

technology
     
ADJ(00)
Voltage
Output

3.3
2.5
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
S H D N *
V
IN
C O M P A N Y
P
allows
LX8630-33CP
LX8630-25CP
        
        
They are
R eference
Plastic TO-220
3-Pin
C urrent
R everse
V oltage
V
Sense
-

IN
an
/2
A
Append the letter “T” to the part number. (i.e. LX8630-33CDDT)
Shut
device will enter shutdown mode when the
SHDN pin is pulled low.
Limiting: the LX8630 limits the current
when the output is shorted, protecting the
sensitive load circuits. The device will
also turn off if the junction temperature
exceeds 150
TO-263 Power Packages: adjustable
versions have five leads, and fixed output
voltage devices are supplied in three lead
packages.
LX8 630-xx S im plified B lock D iagra m
              
              
Linfinity Microelectronics Division
Thermal and Short-Circuit Current
Available in Popular TO-220 and
S hutdown
T herm al

       
   
C harge
P um p
C urrent
Lim it
Microsemi
Note: Available in Tape & Reel.
* Adjustable 5 lead ve rsion only
P
LX8630-00CP
Plastic TO-220
5-Pin
3A BiCMOS Very Low Dropout Regulators
-
-
LX 8630-00
LX 8630-25
LX 8630-33
DD
P
1.25V
RODUCTION
LX8630-33CDD
LX8630-25CDD
Plastic TO-263
3-Pin
+
-
R
25K
41K
R
R
A
-
A
B
-
25K
25K
R
-
B








D
  
   
ATA
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
A D J*
G N D
V
        
        
O UT
S
DD
HEET
LX8630-00CDD
Plastic TO-263
5-Pin
LX8630-xx
-
-
Page 1

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LX8630-00CP Summary of contents

Page 1

... T herm al LX 8630-33 Sense S hutdown * Adjustable 5 lead ve rsion only     Plastic TO-220 P DD 5-Pin - - - LX8630-00CP Note: Available in Tape & Reel. Append the letter “T” to the part number. (i.e. LX8630-33CDDT) Microsemi Linfinity Microelectronics Division LX8630- RODUCTION ATA HEET          ...

Page 2

... Thermal Resistance Board Area ( ) 2.5 sq” (1613mm ) 25°C 2.5 sq” (1613mm ) 27°C 2.5 sq” (1613mm ) 35°C/W Microsemi Linfinity Microelectronics Division LX8630- RODUCTION ATA HEET         TAB is GND V 3 OUT GND (3- ) ACKAGE PIN (Top View ...

Page 3

... Reference ground. The input and output bypass capacitors should be connected to this pin. The tab on the TO- GND 220 and TO-263 packages along with the ground pin are also used for heatsinking the device. Feedback pin for the regulator. For the LX8630-00, the output voltage can be set by two external resistors with ADJ the following relationship the resistor connected between ADJ and GND pin ...

Page 4

... Size your output capacitor to meet the transient loading requirement. If you have a very dynamic load, a larger capacitor will improve the response to these load steps (see charts 2&3) (Unless otherwise specified, the following specifications apply over the operating ambient temperatures for the LX8630-xxC with 125 C ...

Page 5

... CHART 1 – Dropout Voltage vs. Output Current (Typical – LX8630-33CCD) Copyright 2000 Rev. 1.0a,2000-11-28 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570  3A BiCMOS Very Low Dropout Regulators ...

Page 6

... CHAN 1 (TOP TRACE): V CHAN 3 (LOWER TRACE): I 10mA preload current Input Cap: 1 6MVGX 1500µF Sanyo Cap Output Caps: 2 6MVGX 1500µF Sanyo Cap – CHART 2 & 3 LX8630-00CCD Transient Response Note: Adjustable Resistors 10K Ohms Each Microsemi Linfinity Microelectronics Division LX8630- RODUCTION ...

Page 7

... Note: 1. Dimensions do not include mold flash tin protrusions; these shall not exceed 0.155mm(.006”) on any side. solder coverage. Microsemi Linfinity Microelectronics Division LX8630- RODUCTION ATA HEET M I ILLIMETERS NCHES MIN MAX MIN MAX 10 ...

Page 8

... Note Dimensions do not include mold flash or protrusions; these shall not exceed 0.155mm(.006”) on any side. solder coverage. Microsemi Linfinity Microelectronics Division LX8630- RODUCTION ATA HEET M I ILLIMETERS NCHES MIN MAX MIN MAX 14.22 15.88 0.560 ...

Page 9

... This document may not be modified in any way without the express written consent of LinFinity. Product processing does not necessarily include testing of all parameters. LinFinity reserves the right to change the configuration and performance of the product and to discontinue product at any time. Microsemi Linfinity Microelectronics Division LX8630- RODUCTION ATA ...

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