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ASTEC Semiconductor
AS432
1.24V Precision Adjustable Shunt Reference/Amplifier
Features
¥
Temperature-compensated:
50 ppm/C
¥
0.25% to 2.0% bandgap offered
¥
Internal amplifier with 150 mA
capability
¥
Multiple temperature ranges
¥
Low frequency dynamic output
impedance: < 150 m
¥
Low output noise
Description
The AS432 is a three terminal adjustable shunt regulator utilizing an accurate
1.24V bandgap reference. The AS432 is functionally similar to an AS431 except
for its lower reference voltage, making it usable in a wide variety of low voltage
applications.
Because of its robust bipolar technology, the AS432 handles a wide range of cur-
rent, and holds off more than 18V so its use is not limited to low power, low volt-
age systems. Significant care has been taken to provide adequate AC bandwidth
to allow the AS432 as an amplifier in control systems and power electronics.
SEMICONDUCTOR
Pin Configuration
Top view
Ordering Information
CATHODE
TO-92 (LP)
SOIC (D)
ANODE
REFERENCE
REFERENCE
ANODE
ANODE
N/C
CATHODE
ANODE
ANODE
N/C
SOT-89 (S)
CATHODE
ANODE
REFERENCE
1
2
3
4
8
7
6
5
SOT-23/5L (DBV)
ANODE
REFERENCE
N/C
N/C
CATHODE
SOT-23/3L (VS)
CATHODE
REFERENCE
ANODE
Circuit Type:
1.24V Precision Adjustable
Shunt Regulator/Amplifier
Temperature Range:
A
B
C
= –40
°
C to +85
°
C
Bandgap Tolerance:
2
1
R5
R25
=
±
0.25%
= 0
°
C to 70
°
C
= 0
°
C to 105
°
C
=
±
2%
=
±
1%
=
±
0.5%
Packaging Option:
A
B
T
7
13
= Tape and Reel (13" Reel Dia)
Package Style:
D
DBV
LP
S
VS
= SOT-23/3L
= Ammo Pack
= Bulk
= Tube
= Tape and Reel (7" Reel Dia)
= SOIC
= SOT-23/5L
= TO-92
= SOT-89
AS432 A 2 D 7
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