SEMICONDUCTOR
AS1431
Precision Adjustable Shunt Reference
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 脨55 to 125隆C and is now available in the SOT-23 (5L)
package.
Features
樓
樓
樓
樓
樓
樓
樓
Temperature-compensated: 30 ppm/隆C
Trimmed 0.4% bandgap reference
Internal amplifier with 150 mA capability
Temperature range: Extended to 脨55
to125隆C
Low frequency dynamic output
impedance: < 150 m錕?frac12;
Low output noise
Robust ESD protection
Pin Configuration 脩
Top view
TO-92 (LP)
CATHODE
CATHODE
ANODE
ANODE
REFERENCE
ANODE
N/C
2
3
4
1
SOIC (D)
8
7
6
5
REFERENCE
ANODE
ANODE
N/C
SOT-89 (S)
SOT-23/5L (DBV)
N/C
N/C
CATHODE
ANODE
CATHODE
REFERENCE
ANODE
REFERENCE
Ordering Information
AS1431 D R4 D 7
Circuit Type:
Precision Adjustable
Shunt Regulator
Temperature Range:
D = 鈥?5擄C to +125擄C
Bandgap Tolerance:
R4 =
鹵0.4%
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
ASTEC Semiconductor
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