SEMICONDUCTOR
Precision Adjustable Shunt Reference
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.
AS2431
Features
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Temperature-compensated: 15 ppm/擄C
Trimmed bandgap reference
Internal amplifier with 100 mA capability
Multiple temperature ranges
Low frequency dynamic output
impedance: < 450 m鈩?/div>
Low output noise
Pin Configuration 鈥?/div>
Top View
TO-92 (LP)
CATHODE
CATHODE
ANODE
ANODE
REFERENCE
ANODE
N/C
2
3
4
1
8L SOIC (8D)
8
7
6
5
REFERENCE
ANODE
ANODE
N/C
SOT-89 (S)
3L SOT-23 (3VS)
CATHODE
CATHODE
ANODE
REFERENCE
ANODE
REFERENCE
Ordering Information
AS2431 A C 8D N
Circuit Type:
Precision Adjustable
Shunt Regulator
Bandgap Tolerance:
A =
鹵0.25%
C =
鹵0.5%
D =
鹵1.0%
E =
鹵2.0%
Temperature Range:
A = 0擄C to 70擄C
B = 0擄C to 105擄C
C = 鈥?0擄C to +85擄C
F = 鈥?5擄C to +125擄C
Packaging Option:
A = Ammo Pack
B = Bulk
T = Tube
M = Tape and Reel (7" Reel Dia. SOT-23 Only)
N = Tape and Reel (13" Reel Dia)
Package Style:
8D = 8 Pin, Plastic SOIC
LP = TO-92
S = SOT-89
3VS = 3 Pin, SOT-23
www.ptcc.com.tw
17
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