Wide Operating Current..........................1mA to 150mA
•
Extended Temperature Range....................0°C to 105°C
°
°
•
Low Temperature Coefficient ............................30 ppm/°C
•
Offered in TO-92, SOIC, SOT-89, SOT-23-5
•
Improved
Replacement in Performance for TL431
•
Low Cost Solution
APPLICATIONS
•
Battery Operating Equipments
•
Adjustable Supplies
•
Switching Power Supplies
•
Error Amplifiers
•
Single Supply Amplifier
•
Monitors / VCR / TV
•
Personal Computers
PRODUCT DESCRIPTION
The SPX431 is a 3-terminal adjustable shunt voltage regulator providing a highly accurate 0.5% bandgap reference. SPX431 acts as an
open-loop error amplifier with a 2.5V temperature compensation reference. The SPX431 thermal stability, wide operating current
(150mA) and temperature range (0°C to 105°C) makes it suitable for all variety of application that are looking for a low cost solution
with high performance.
SPX431 tolerance of 0.5% is proven to be sufficient to overcome all of the other errors in the system to
virtually eliminate the need for trimming in the power supply manufactures assembly line and contribute a significant cost
savings.
The output voltage may be adjusted to any value between V
REF
and 36 volts with two external resistors. The SPX431 is operating an
extended temperature range of 0°C to 105°C. The SPX431 is available in TO-92, SO-8, SOT-89, and SOT-23-5 packages.
PIN CONFIGURATIONS
8-Pin Surface Mount (S)
SOT-23-5 (M5)
REF
ANODE
4
SOT-89 (M1)
TO-92 (N)
1
2
3
CATHODE
ANODE
ANODE
N/C
1
2
3
4
8
7
REF
ANODE
ANODE
N/C
5
SPX431
1
N/C
2
N/C
3
CATHODE
1
SPX431
2
3
CATHODE
REF
CATHODE
SPX431
6
5
REF
ANODE
ANODE
Top View
Top View
Top View
Bottom View
Rev. 10/30/00
SPX431
CATHODE (K)
REFERENCE
(R)
+
-
2.5V
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Cathode-Anode Reverse Breakdown
Anode-Cathode Forward Current
Operating Cathode Current
Reference Input Current
Continuous Power Dissipation at 25° C
TO-92
SOT-23
8L SOIC
SOT-89
Junction Temperature
Storage Temperature
Lead Temperature (Soldering 10 sec.)
SYMBOL
V
KA
I
AK
I
KA
I
REF
P
D
ANODE (A)
RATING
37
1
150
10
775
200
750
1000
150
- 65 to 150
300
UNITS
V
A
mA
mA
mW
mW
mW
mW
°C
°C
°C
T
J
T
STG
T
L
Stresses greater than those listed under ABSULUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect reliability.
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