LX8818-01CDT Microsemi Corporation, LX8818-01CDT Datasheet - Page 2

• Manufacturer Part Number: LX8818-01CDT
• Description: Low Drop Out Regulator - Positive Adjustable, Package : (none)
• Manufacturer: Microsemi Corporation

Copyright  2000
Rev. 1.0, 2002-10-01
P
IN
Input Voltage (V
Load Current (Internally Limited) .................................................................................. 1A
Power Dissipation ................................................................................... Internally Limited
Short-Circuit Protection ........................................................................................Indefinite
Operating Junction Temperature................................................................................ 150°C
Lead Temperature (Soldering 180 seconds)............................................................... 235°C
Note:
Junction Temperature Calculation: T
The θ
system. All of the above assume no ambient airflow. θ
on mounting technique. (See Application Notes Section: Thermal considerations)
GND
V
ADJ
T
T
(T
T
T
(T
V
N
LM
OUT
DT
HERMAL
HERMAL
HERMAL
HERMAL
IN
YPICAL
YPICAL
AME
JA
Exceeding these ratings could cause damage to the device. All voltages are with respect to
Ground. Currents are positive into, negative out of specified terminal.
numbers are guidelines for the thermal performance of the device/pc-board
I N T E G R A T E D
Plastic D-Pak 3-Pin
Plastic MLP 6-Pin
,
,
R
R
R
R
DEPENDING ON MOUNTING
DEPENDING ON MOUNTING
Positive unregulated supply input for the regulator. Bypass to GND with at least 2.2µF of low ESR and ESL
capacitance.
Adjustable version only. The output voltage can be set by two external resistors with the following
relationship: V
and ADJ, and R
Common terminal for ground reference.
pin. In addition the tab on the “DT” package is also used for heat sinking the device.
Regulator output. It is recommended to bypass to GND with at least 2.2uF. Size your output capacitor to meet
the transient loading requirement. If you have a very dynamic load, a lower ESR capacitor will improve the
response to these load steps.
ESISTANCE
ESISTANCE
ESISTANCE
ESISTANCE
IN
A B S O L U T E M A X I M U M R A T I N G S
) .................................................................................................... 13.5V
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
-J
-J
-J
-J
T H E R M A L D A T A
UNCTION TO
UNCTION TO
UNCTION TO
UNCTION TO
OUT
2
is the resistor connected between ADJ and GND (see figure 2 on page 7).
= V
J
P R O D U C T S
= T
REF
F U N C T I O N A L P I N D E S C R I P T I O N
A
+ (P
/
/
PCB LAYOUT
PCB LAYOUT
* (1+ (R
T
A
T
A
AB
AB
MBIENT
MBIENT
D
Linfinity Microelectronics Division
x θ
, θ
, θ
JA
JT
JT
1
).
, θ
, θ
/R
JA
Microsemi
can vary significantly depending
2
J
J
)
)
)) + (I
A
A
The input and output bypass capacitors should be connected to this
ADJ
D
ESCRIPTION
* R
1
) where R
25-35°C/W
29-35°C/W
6°C/W
8°C/W
1A Low Dropout Regulator
P
RODUCTION DATA SHEET
1
is the resistor connected between V
V
ADJ
* Must be connected to GND or left floating
OUT
V
P A C K A G E P I N O U T
IN
N/C = Not internally connected
TAB is GND
1
2
3
(see pg 8 for details)
LM P
DT P
(Top View)
(Top View)
ACKAGE
ACKAGE
*
*
LX8818
GND
6
5
4
GND
N/C
N/C
V
V
OUT
IN
OUT
Page 2