TL431 Datasheet, PDF (1/7 Pages) Motorola, Inc – PROGRAMMABLE PRECISION REFERENCES

TL431 Series
TL431 Series
Adjustable Precision Shunt Regulator
Description
The TL431 series are three-terminal adjustable regulators with
guaranteed thermal stability over applicable temperature ranges. The
output voltage may be set to any value between V_REF (approximately 2.5
volts) and 36 volts with two external resistors. These devices have a
typical dynamic output impedance of 0.2:. Active output circuitry provides
a very sharp turn-on characteristic, making these devices excellent
replacement for zener diodes in many applications.
Features
x Programmable Precise Output Voltage from 2.5V to 36V
x High Stability under Capacitive Load
x Low Temperature Deviation: 4.5mV Typical
x Low Dynamic Output Resistance: 0.2ȍ Typical
x Sink Current Capacity from 1mA to 100 mA
x Low Output Noise
x Wide Operating Range of -40 to 125 ^oC
x Low Equivalent Full-range Temperature Coefficient with 20PPM/ ^oC Typical
TL431 Series Pin Assignment
3
12
3-Lead Plastic SOT-23
Package Code: N
Pin 1: Reference
Pin 2: Cathode
Pin 3: Anode
123
3-Lead Plastic TO-92
Package Code: A
Pin 1: Reference
Pin 2: Anode
Pin 3: Cathode
Absolute Maximum Ratings
(Operating temperature range applies unless otherwise specified)
Characteristics
Cathode Voltage
Cathode Current Range (Continuous)
Reference Input Current Range
Power Dissipation
Operating Temperature Range (Max.)
Storage Temperature Range
Symbol
V_KA
I_K
I_REF
P_D
T _opr
T_stg
Value
40
-100~+150
0.05~+10
SOT-23
370
TO-92
770
--
--
--
--
-40~+125
-65~+150
Unit
V
mA
mA
mW
o_C
o_C
Operating Conditions
Characteristics
Cathode Voltage
Cathode Current Range (Continuous)
Operating Ambient Temperature Range
Symbol
V_KA
I_K
Min.
V_REF
1
-40
Max.
36
100
125
Unit
V
mA
o_C
CTC-IC-0002-VER2.0
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TL431