TL431_06 Datasheet, PDF (1/11 Pages) ON Semiconductor – Programmable Precision References

TL431 / TL431A / TL431B
TM
®
Precision programmable References
PRODUCTION DATA SHEET
DESCRIPTION
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 with improved turn-on
36V. These devices offer low output characteristics.
impedance for improved load
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
KEY FEATURES
ƒ INITIAL VOLTAGE REFERENCE
ACCURACY OF 0.4% (TL431B)
ƒ SINK CURRENT CAPABILITY 1mA
to 100mA
ƒ TYPICAL OUTPUT DYNAMIC
IMPEDANCE LESS THAN 200mΩ;
TYPICAL OUTPUT IMPEDANCE OF
THE TL431B LESS THAN 100mΩ
ƒ ADJUSTABLE OUTPUT VOLTAGE
FROM 2.5V TO 36V
ƒ AVAILABLE IN SURFACE-MOUNT
PACKAGES
ƒ LOW OUTPUT NOISE
ƒ TYPICAL EQUIVALENT FULL
RANGE TEMPERATURE
COEFFICIENT OF 30ppm/°C
ƒ DIRECT PIN-TO-PIN
REPLACEMENT FOR INDUSTRY
STANDARD TL431 AND TL1431
PRODUCT HIGHLIGHT
Precision Programmable References
V_IN
V_OUT
R1
TL431/A
& TL431B
R2
⎛ ^R1 ⎞
V_O = _⎜⎝1+ _{R2 ⎟âŽ}  •V_REF
PACKAGE ORDER INFO
T_A (°C)
Initial
Tolerance
Plastic SOIC
DM _8-Pin
RoHS Compliant / Pb-free
Transition DC: 0440
Plastic TO-92
LP _3-Pin
RoHS Compliant / Pb-free
Transition DC: 0509
Plastic TO-89
PK _{3 - Pin}
RoHS Compliant / Pb-free
Transition DC: 0518
2%
0 to 70
1%
TL431CDM
TL431ACDM
TL431CLP
TL431ACLP
TL431CPK
TL431ACPK
0.4%
TL431BCDM
TL431BCLP
TL431BCPK
2%
TL431IDM
TL431ILP
TL431IPK
-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
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
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