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AS1431DR4ST Datasheet Preview

AS1431DR4ST Datasheet

Precision Adjustable Shunt Reference

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AS1431DR4ST pdf
SEMICONDUCTOR
AS1431
Precision Adjustable Shunt Reference
Features
¥ Temperature-compensated: 30 ppm/¡C
¥ Trimmed 0.4% bandgap reference
¥ Internal amplifier with 150 mA capability
¥ Temperature range: Extended to Ð55
to125¡C
¥ Low frequency dynamic output
impedance: < 150 m½
¥ Low output noise
¥ Robust ESD protection
Description
The AS1431 is a three-terminal adjustable shunt regulator providing a
highly accurate 0.4% bandgap reference. The adjustable shunt regulator
is ideal for a wide variety of linear applications that can be implemented
using external components to obtain adjustable currents and voltages.
In the standard shunt configuration, the combination of low temperature
coefficient (TC), sharp turn-on characteristics, low output impedance and
programmable output voltage make this precision reference a perfect
zener diode replacement.
The AS1431 is characterized to operate over the full automotive tem-
perature range of Ð55 to 125¡C and is now available in the SOT-23 (5L)
package.
Pin Configuration Ñ Top view
TO-92 (LP)
CATHODE
ANODE
REFERENCE
CATHODE 1
ANODE 2
ANODE 3
N/C 4
SOIC (D)
8 REFERENCE
7 ANODE
6 ANODE
5 N/C
SOT-23/5L (DBV)
N/C REFERENCE
N/C
CATHODE
ANODE
Ordering Information
Circuit Type:
Precision Adjustable
Shunt Regulator
Temperature Range:
D = –55°C to +125°C
Bandgap Tolerance:
R4 = ±0.4%
AS1431 D R4 D 7
ASTEC Semiconductor
1
SOT-89 (S)
CATHODE
ANODE
REFERENCE
Packaging Option:
A = Ammo Pack
B = Bulk
T = Tube
7 = Tape and Reel (7" Reel Dia)
13 = Tape and Reel (13" Reel Dia)
Package Style:
D = SOIC
DBV = SOT-23/5L
LP = TO-92
S = SOT-89



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AS1431DR4ST Datasheet Preview

AS1431DR4ST Datasheet

Precision Adjustable Shunt Reference

No Preview Available !

AS1431DR4ST pdf
AS1431
Functional Block Diagram
Precision Adjustable Shunt Reference
CATHODE (K)
REFERENCE
(R)
+
Ð
2.5 V
ANODE (A)
Absolute Maximum Ratings
Parameter
Symbol
Rating
Units
Cathode-Anode Reverse Breakdown
Anode-Cathode Forward Current
Operating Cathode Current
Reference Input Current
Continuous Power Dissipation at 25¡C
TO-92
VKA 37 V
IAK 1 A
IKA 250 mA
IREF 10 mA
PD
775 mW
8L SOIC
750 mW
SOT-89
1000
mW
SOT-23/5L
200 mW
Junction Temperature
TJ 150 ¡C
Storage Temperature
TSTG
Ð65 to 150
¡C
Lead Temperature Soldering 10 Seconds
TL 300 ¡C
Stresses greater than those listed under ABSOLUTE 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 sec-
tions of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
Recommended Conditions
Parameter
Symbol Rating
Cathode Voltage
Cathode Current
VKA VREF to 20
IK 10
Typical Thermal Resistances
Unit Package
θJA
θJC Typical Derating
V TO-92
160¡C/W
80¡C/W 6.3 mW/¡C
mA SOIC
175¡C/W
45¡C/W 5.7 mW/¡C
SOT-89 110¡C/W
8¡C/W 9.1 mW/¡C
SOT-23/5L 575¡C/W
150¡C/W 1.7 mW/¡C
ASTEC Semiconductor
2


Part Number AS1431DR4ST
Description Precision Adjustable Shunt Reference
Maker ETC
Total Page 8 Pages
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