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AS1431S1/S2 Datasheet

  • AS1431S1/S2

  • Analog IC

  • 7頁

  • ETC

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AS1431
Precision Adjustable Shunt Regulator
FEATURES
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Voltage Tolerance ................................................ 0.4%
Wide Operating Current .....................1mA to 150mA
Extended Temperature Range ........... -55擄C to 125擄C
擄
擄
Low Temperature Coefficient ........................30 ppm/擄C
Improved
Replacement in Performance for
LT1431
Offered In Small Low Power SOT-89 Package
Low Output Noise
APPLICATIONS
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Battery Operating Equipment
Adjustable Supplies
Switching Power Supplies
Error Amplifiers
Single Supply Amplifiers
Monitors / VCR / TV
Personal Computers
PRODUCT DESCRIPTION
The AS1431 is a 3-terminal Adjustable Shunt Voltage Regulator providing a highly accurate 0.4% bandgap reference. AS1431 acts as
an open-loop error amplifier with a 2.5V temperature compensation reference. The AS1431 thermal stability, wide operating current
(150mA) and temperature range (125擄C) makes it suitable for all varieties of applications that are looking for a low cost solution with
high performance.
AS1431 tolerance of 0.4% 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.
In the standard shunt configuration, the combination of low temperature coefficient (T.C.), sharp turn-on characteristics, low output
impedance and programmable output voltage that makes this precision reference an excellent error amplifier.
The AS1431 is a direct improved replacement for the AS431 and TL431 in low voltage, low current applications.
PIN CONFIGURATIONS
Standard Pinout
8-Pin Surface Mount (S)
CATHODE
ANODE
ANODE
N/C
1
2
3
4
8
7
REF
ANODE
ANODE
N/C
SOT-23-5 (M5)
REF
ANODE
SOT-89 (M1)
TO-92 (N)
5
4
1
2
3
AS1431
AS1431
1
N/C
AS1431
3
CATHODE
REF
1
2
ANODE
3
CATHODE
REF
ANODE
CATHODE
6
5
2
N/C
Top View
Top View
Front View
Bottom View
Rev. 10/5/00

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