TL431 / TL431A / TL431B
®
TM
Precision programmable References
P RODUCTION D ATA S HEET
The TL431/TL431A/TL431B series
precision adjustable three terminal
shunt voltage regulators are pin-to-pin
compatible with the industry standard
TL431. The output voltage of this
reference is programmable by using
two external resistors from 2.5V to
36V. These devices offer low output
impedance
for
improved
load
INITIAL VOLTAGE REFERENCE
ACCURACY OF 0.4% (TL431B)
SINK CURRENT CAPABILITY 1mA
to 100mA
TYPICAL OUTPUT DYNAMIC
IMPEDANCE LESS THAN 200mΩ;
TYPICAL OUTPUT IMPEDANCE OF
THE TL431B LESS THAN 100mΩ
ADJUSTABLE OUTPUT VOLTAGE
FROM 2.5V TO 36V
AVAILABLE IN SURFACE-MOUNT
PACKAGES
LOW OUTPUT NOISE
TYPICAL EQUIVALENT FULL
RANGE TEMPERATURE
COEFFICIENT OF 30ppm/°C
DIRECT PIN-TO-PIN
REPLACEMENT FOR INDUSTRY
STANDARD TL431 AND TL1431
regulation.
The
typical
output
impedance of these devices is 200mΩ.
These devices find application in the
feedback path of switching power
supplies, OVP crowbar circuits,
reference for A/D, D/A, and as zener
diodes
with
improved
turn-on
characteristics.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
WWW . Microsemi .C OM
KEY FEATURES
DESCRIPTION
PRODUCT HIGHLIGHT
Precision Programmable References
VIN
VOUT
R1
TL431/A
& TL431B
R2
⎛
⎝
VO = ⎜ 1+
R1 ⎞
⎟ •VREF
R2 ⎠
PACKAGE ORDER INFO
TA (°C)
-40 to 85
2%
1%
0.4%
2%
1%
0.4%
DM
Plastic SOIC
8-Pin
LP
Plastic TO-92
3-Pin
PK
Plastic TO-89
3 - Pin
RoHS Compliant / Pb-free
Transition DC: 0440
RoHS Compliant / Pb-free
Transition DC: 0509
RoHS Compliant / Pb-free
Transition DC: 0518
TL431CDM
TL431ACDM
TL431BCDM
TL431IDM
TL431AIDM
TL431BIDM
TL431CLP
TL431ACLP
TL431BCLP
TL431ILP
TL431AILP
TL431BILP
TL431CPK
TL431ACPK
TL431BCPK
TL431IPK
TL431AIPK
TL461BIPK
TL431X
TL431X
0 to 70
Initial
Tolerance
Note: All surface mount packages are available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LTL431AIDM-TR). The
TO-92 (LP) package is available in ammo-pack.
Copyright © 1999
Rev. 1.4, 2006-02-02
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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