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AS2431
Precision Adjustable Shunt ReferenceSEMICONDUCTOR
Features
• Temperature-compensated: 15 ppm/°C
• Trimmed bandgap reference
• Internal amplifier with 100 mA capability
• Multiple temperature ranges
• Low frequency dynamic output
impedance: < 450 mΩ
• Low output noise
Description
The AS2431 is a three-terminal adjustable shunt regulator providing a
highly accurate 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 an
excellent error amplifier.
The AS2431 is a direct replacement for the AS431 in low voltage, low
current applications. It is also available in the very small footprint SOT-
23.
CATHODE
TO-92 (LP) 8L SOIC (8D)
ANODE
REFERENCE
CATHODE
REFERENCE
ANODE
ANODE
N/C
CATHODE
ANODE
ANODE
N/C
SOT-89 (S)
3L SOT-23 (3VS)
ANODE
REFERENCE
1
2
3
4
8
7
6
5
CATHODE
REFERENCE
ANODE
Circuit Type:
Precision Adjustable
Shunt Regulator
Bandgap Tolerance:
A = ±0.25%
C = ±0.5%
D = ±1.0%
E = ±2.0%
Temperature Range:
AS2431 A C 8D N
Packaging Option:
A
B
T
M
N
Package Style:
= Ammo Pack
= Bulk
= Tube
= Tape and Reel (7" Reel Dia. SOT-23 Only)
= Tape and Reel (13" Reel Dia)
=
=
=
==
=
=
=
8 Pin, Plastic SOIC
TO-92
SOT-89
3 Pin, SOT-23
8D
LP
S
3VSA
B
C
F
0°C to 70°C
0°C to 105°C
–40°C to +85°C
–55°C to +125°C
Ordering Information
Pin Configuration – Top View