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參數(shù)資料
| 型號： | LX1431IM |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | PROGRAMMABLE REFERENCE |
| 中文描述： | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, PDIP8 |
| 封裝： | LEAD FREE, PLASTIC, DIP-8 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 163K |
| 代理商： | LX1431IM |
D E S C R I P T I O N
K E Y F E AT U R E S
p
GUARANTEED 0.4% INITIAL VOLTAGE
TOLERANCE
p
0.1
TYPICAL DYNAMIC OUTPUT
IMPEDANCE
p
FAST TURN-ON
p
SINK CURRENT CAPABILITY, 1mA TO 100mA
p
LOW REFERENCE PIN CURRENT
The LX1431 is an adjustable shunt voltage
regulator featuring 100mA sink capability, a
0.4% initial reference voltage tolerance and
a 0.3% typical temperature stability. This
product, which is ideal for use in Pentium
applications, is equipped with on-chip di-
vider resistors, enabling it to be configured
as a 5V shunt regulator. In this configura-
tion, the LX1431 has an initial voltage toler-
ance of
only
1% and requires no additional
external components. The Linfinity
LX1431EB evaluation board and design kit
is available to assist engineers in quickly
configuring the most efficient, cost-effective
Pentium designs.
The output voltage of the LX1431 may be
set to any value between 2.5V and 36V
through the addition of two external resis-
tors, which is of particular importance in the
PA C K A G E O R D E R I N F O R M AT I O N
Plastic DIP
8-pin
0 to 70
LX1431CM
-40 to 85
LX1431IM
Note: All surface mount packages are available in Tape & Reel.
Append the letter "T" to part number (i.e. LX1431CDMT).
T
A
(°C)
LX1431CDM
LX1431IDM
M
Plastic SOIC
8-pin
DM
design of both adjustable and switching
power supplies. In addition, the nominal
internal current limit of 100mA may be de-
creased with the addition of a single exter-
nal resistor.
For applications requiring an adjustable
reference, the Linfinity LX6431CLP, a simpli-
fied three-pin programmable reference, may
be used. Because the LX6431 is pin-for-pin
compatible with Linfinity's earlier TL431, use
of this product provides designers a simple
migration path to the more robust LX6431.
A separate LX6431 data sheet is available
which details the specifics of this product.
In addition, Pentium designers may use
Linfinity's LX8585/8585A 4.6A or LX8584/
8584A 7A Low Dropout Regulators to achieve
the most optimum motherboard configura-
tion.
A P P L I C AT I O N S
I
LINEAR REGULATORS
I
ADJUSTABLE POWER SUPPLIES
I
SWITCHING POWER SUPPLIES
I
LX1431EB EVALUATION BOARD FOR
PENTIUM APPLICATIONS AVAILABLE.
CONSULT FACTORY.
P
R O G R A M M A B L E
R
E F E R E N C E
P
R O D U C T I O N
D
A T A
S
H E E T
T
H E
I
N F I N I T E
P
O W E R
O F
I
N N O V A T I O N
Copyright 1997
Rev. 1.2 4/97
F O R F U RT H E R I N F O R M AT I O N C A L L ( 7 1 4 ) 8 9 8 - 8 1 2 1
11861 W
ESTERN
A
VENUE
, G
ARDEN
G
ROVE
, CA. 92841
LX1431
LIN D
OC
#: 1431
1
P R O D U C T H I G H L I G H T
Thick traces represent high current traces which
must be low resistance / low inductance traces in
order to achieve good transient response.
μP
Load
100μF x 6
10V
AVX TYPE
TPS
1μF x 10
SMD
1k
0.1%
2.84k
W
0.1%
COL
V
+
SGND
FGND
REF
LX1431
V
IN
V
OUT
ADJ
1k
W
1k
W
0.01μF
3x
330μF, 6.3V
Low ESR
Oscon Type
from Sanyo
2
3
1
6
5
8
1
3
0.1μF
50V
220μF
10V
Low ESR
from
Sanyo
5V
PLACE IN μP SOCKET CAVITY
LX8584A
V
7A
(See Table Below)
2
250pF
21k
1%
JP1
T
HE
LX8584A
AND
LX1431
IN
75
AND
166MH
Z
P54C P
ROCESSOR
A
PPLICATIONS
U
SING
3.3V C
ACHE
V
O
3.50
3.38
JP1
Short
Open
TYPICAL APPLICATION
120/166MHz, VRE, 3.3V Cache
75/90/100/133MHz, STND, 3.3V Cache
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