PROGRAMMABLE PRECISION SHUNT REGULATOR
FEATURES
Programmable Output Voltage to 40V
Guaranteed 0.5% Reference Voltage Tolerance
Low (0.2Ω Typ.) Dynamic Output Impedance
Cathode Current Range(Continuous) – 100 ~ 150 mA
Equivalent Full Range Temperature Coefficient of
50PPM/℃
Temperature Compensated For Operation Over
Full Rate Operating Temperature Range
Low Output Noise Voltage
Fast Turn-on Response
TO-92, SOT-89 or SOT-23 3L Package
TL431Z/AZ/CZ
TO-92 PKG
3
T
O
P
2
1
SOT-23 PKG
2
TOP
APPLICATION
Shunt Regulator
Precision High-Current Series Regulator
High-Current Shunt Regulator
Crowbar Circuit
PWM Converter With Reference
Voltage Monitor
Precision Current Limiter
1
3
SOT-89 PKG
TOP
DESCRIPSION
The TL431Z is a three-terminal adjustable shunt regulator
with specified thermal stability over applicable
temperature V
REF
(Approx. 2.5V) and 40V with two
external resistors. This device has a typical dynamic
output impedance of 0.2Ω. Active output circuitry provides
a very sharp turn-on characteristic, making this device
excellent replacement for zener diodes in many
applications. The TL431Z is characterized for operation
from -40℃ to +125℃.
PIN 1. Reference
ORDERING INFORMATION
Device (Marking)
TL431Z
TL431-AZ
TL431-CZ
431Z
431Z
1
2
3
2. Anode
3. Cathode
Package
TO-92
SOT-23 3L
SOT-89 3L
Absolute Maximum Ratings
(Operating temperature range applies unless otherwise specified)
CHARACTERISTIC
Cathode Voltage
Cathode Current Range(Continuous)
Reference Input Current Range
Junction Temperature Range
Storage Temperature Range
Operating Temperature Range
2009 – Obsolete
SYMBOL
V
KA
I
K
I
REF
T
J
T
STG
T
OPR
MIN.
-
-100
0.05
0
-60
-40
MAX.
42
150
10
150
150
125
UNIT
V
mA
mA
℃
℃
℃
-1-
HTC
HTC [ HTC KOREA TAEJIN TECHNOLOGY CO. ]
