TL431 / TL431A / TL431B
®
Precision programmable References
TM
PRODUCTION DATA SHEET
KEY FEATURES
DESCRIPTION
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
The TL431/TL431A/TL431B series regulation.
The
typical
output
precision adjustable three terminal impedance of these devices is 200mΩ.
shunt voltage regulators are pin-to-pin These devices find application in the
compatible with the industry standard feedback path of switching power
TL431. The output voltage of this supplies, OVP crowbar circuits,
reference is programmable by using reference for A/D, D/A, and as zener
two external resistors from 2.5V to diodes
36V. These devices offer low output characteristics.
impedance for improved load
with
improved
turn-on
AVAILABLE IN SURFACE-MOUNT
PACKAGES
LOW OUTPUT NOISE
TYPICAL EQUIVALENT FULL
RANGE TEMPERATURE
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
COEFFICIENT OF 30ppm/°C
DIRECT PIN-TO-PIN
REPLACEMENT FOR INDUSTRY
STANDARD TL431 AND TL1431
PRODUCT HIGHLIGHT
Precision Programmable References
VIN
VOUT
R1
TL431/A
& TL431B
R2
R1
⎛
⎝
⎞
⎠
V = 1+
•V
REF
⎜
⎟
O
R2
PACKAGE ORDER INFO
Plastic SOIC
8-Pin
Plastic TO-92
3-Pin
Plastic TO-89
3 - Pin
Initial
Tolerance
DM
LP
PK
TA (°C)
RoHS Compliant / Pb-free
RoHS Compliant / Pb-free
RoHS Compliant / Pb-free
Transition DC: 0440
Transition DC: 0509
Transition DC: 0518
2%
1%
0.4%
2%
TL431CDM
TL431ACDM
TL431BCDM
TL431IDM
TL431CLP
TL431ACLP
TL431BCLP
TL431ILP
TL431CPK
TL431ACPK
TL431BCPK
TL431IPK
0 to 70
-40 to 85
1%
TL431AIDM
TL431AILP
TL431AIPK
0.4%
TL431BIDM
TL431BILP
TL461BIPK
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, 2006-09-26
Microsemi
Page 1
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570