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TL431CLPR 产品设计参考 - TI

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TL431CLPR 产品设计参考

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© Semiconductor Components Industries, LLC, 1995
October, 2016 − Rev. 39
1 Publication Order Number:
TL431/D
TL431A, B Series,
NCV431A, B Series,
SCV431A
Programmable
Precision References
The TL431A, B integrated circuits are three−terminal
programmable shunt regulator diodes. These monolithic IC voltage
references operate as a low temperature coefficient zener which is
programmable from V
ref
to 36 V with two external resistors. These
devices exhibit a wide operating current range of 1.0 mA to 100 mA
with a typical dynamic impedance of 0.22 W. The characteristics of
these references make them excellent replacements for zener diodes in
many applications such as digital voltmeters, power supplies, and op
amp circuitry. The 2.5 V reference makes it convenient to obtain a
stable reference from 5.0 V logic supplies, and since the TL431A, B
operates as a shunt regulator, it can be used as either a positive or
negative voltage reference.
Features
Programmable Output Voltage to 36 V
Voltage Reference Tolerance: ±0.4%, Typ @ 25°C (TL431B)
Low Dynamic Output Impedance, 0.22 W Typical
Sink Current Capability of 1.0 mA to 100 mA
Equivalent Full−Range Temperature Coefficient of 50 ppm/°C Typical
Temperature Compensated for Operation over Full Rated Operating
Temperature Range
Low Output Noise Voltage
NCV/SCV Prefixes for Automotive and Other Applications
Requiring Unique Site and Control Change Requirements;
AEC−Q100 Qualified and PPAP Capable
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
(Top View)
3
1
Reference
N/C
N/C
N/C
2
4
8
7
6
5
N/C
Anode
N/C
Cathode
Anode Anode
TO−92 (TO−226)
LP SUFFIX
CASE 29
PDIP−8
P SUFFIX
CASE 626
SOIC−8
D SUFFIX
CASE 751
Pin 1. Reference
2. Anode
3. Cathode
(Top View)
3
1
Reference
N/C
2
4
8
7
6
5
N/C
Cathode
Micro8E
DM SUFFIX
CASE 846A
8
1
8
1
1
2
3
This is an internally modified SOIC−8 package. Pins 2, 3, 6 an
d
7 are electrically common to the die attach flag. This interna
l
lead frame modification increases power dissipation capabilit
y
when appropriately mounted on a printed circuit board. Th
is
modified package conforms to all external dimensions of th
e
standard SOIC−8 package.
See detailed ordering and shipping information on page 13 o
f
this data sheet.
ORDERING INFORMATION
See general marking information in the device marking
section on page 14 of this data sheet.
DEVICE MARKING INFORMATION
www.onsemi.com
页面指南

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