LX8630 Microsemi Corporation, LX8630 Datasheet - Page 3
LX8630
Manufacturer Part Number
LX8630
Description
3a Bicmos Very Low Dropout Regulators
Manufacturer
Microsemi Corporation
Datasheet
1.LX8630.pdf
(9 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LX8630-25CDD
Manufacturer:
MSC
Quantity:
20 000
Copyright
Rev. 1.0b, 2001-02-20
A
M I C R O S E M I
SHDN
GND
V
ADJ
V
V
OUT
IN
IN
2000
C
IN
Positive supply input for the regulator. Bypass to GND with at
source is further than 1 inch from the device.
regulation, rather it is needed for transient response. 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.
Reference ground. The input and output bypass capacitors should be connected to this pin. The tab on the TO-
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
the following relationship: V
R
Shutdown pin. For the LX8630-00, this pin has a threshold of about V
enable the regulator. This can be accomplished with a resistive pull-up. When low, it turns off the regulator and
puts the device in a low current shutdown state.
B
is the resistor connected between ADJ and GND pin.
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
1
C O M P A N Y
IN
S H D N
2
LX 8630-00
OUT
= 1.25V * (1+R
Linfinity Microelectronics Division
FIGURE 1
G N D
Microsemi
3
–
Typical Application
A
/R
!"#
$%
&
3A BiCMOS Very Low Dropout Regulators
O U T
B
A D J
) where R
5
4
A
V
is the resistor connected between V
O U T
P
V
RODUCTION
R E F
IN
V
/2, it should be actively pulled high to
R E F
1
R
R
D
A
B
ATA
R
R
A
B
S
HEET
C
O U T
OUT
LX8630-xx
V
and ADJ,
O U T
Page 3