Document
UNISONIC TECHNOLOGIES CO., LTD
TL431
LINEAR INTEGRATED CIRCUIT
PROGRAMMABLE PRECISION REFERENCE
DESCRIPTION
The UTC TL431 is a three-terminal adjustable regulator with a guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between VREF (approximately 2.5V) and 36V with two external resistors. It provides very wide applications, including shunt regulator, series regulator, switching regulator, voltage reference and others.
FEATURES
* Programmable output Voltage to 36V. * Low dynamic output impedance 0.2Ω. * Sink current capability of 1.0 to 100mA. * Equivalent full-range temperature coefficient of 50ppm/°C
typical for operation over full rated operating temperature range.
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
Package
Pin Assignment 12345678
TL431K-AB3-R
TL431G-AB3-R
SOT-89 R A K - - - - -
TL431K-AE2-R
TL431G-AE2-R
SOT-23-3 R K A - - - - -
TL431K-AE3-R
TL431G-AE3-R
SOT-23 R K A - - - - -
TL431NSL-AE3-R
TL431NSG-AE3-R
SOT-23 K R A - - - - -
TL431NSL-AE2-R
TL431NSG-AE2-R
SOT-23-3 K R A - - - - -
TL431NSL-AH3-R
TL431NSG-AH3-R
TSOT-23 K R A - - - - -
TL431K-AF5-R
TL431G-AF5-R
SOT-25 X X K R A - - -
TL431K-AF5-B-R
TL431G-AF5-B-R
SOT-25 X A X K R - - -
TL431K-AF5-C-R
TL431G-AF5-C-R
SOT-25 R A K X X - - -
TL431K-S08-R
TL431G-S08-R
SOP-8
KAAXXAAR
TL431K-K03-K
TL431G-G03-K
SIP-3
RAK - - - - -
TL431K-T92-B
TL431G-T92-B
TO-92
RAK - - - - -
TL431K-T92-K
TL431G-T92-K
TO-92
RAK - - - - -
Note: Pin Code: K: Cathode A: Anode R: Reference X: No Connection
Packing
Tape Reel Tape Reel Tape Reel Tape Reel Tape Reel Tape Reel Tape Reel Tape Reel Tape Reel Tape Reel
Bulk Tape Box
Bulk
www.unisonic.com.tw Copyright © 2018 Unisonic Technologies Co., Ltd
1 of 6
QW-R103-003.AQ
TL431
MARKING
PACKAGE
SOT-23-3 SOT-23 (TL431)
SOT-23-3 SOT-23 TSOT-23 (TL431NS)
SOT-25
MARKING
LINEAR INTEGRATED CIRCUIT
PACKAGE SOP-8
MARKING
SIP-3
SOT-25 (Pin B, C)
SOT-89
PIN CONFIGURATION (For SOP-8)
TO-92
BLOCK DIAGRAM
REFERENCE 2.5V VREF
CATHODE REFERENCE (R)
CATHODE (K) ANODE(A)
ANODE
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 6
QW-R103-003.AQ
TL431
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Cathode Voltage
VKA
37
V
Cathode Current Range(Continuous) Reference Input Current Range
IKA
-100 ~ +150
mA
IREF
-0.05 ~ +10
mA
TO-92
770
mW
SOT-89
800
mW
Power Dissipation
SOT-23/SOT-23-3 TSOT-23/SOT-25
PD
300
mW
SIP-3
400
mW
SOP-8
600
mW
Operating Junction
TJ
+150
°C
Operating Ambient (Note 2)
TOPR
-40 ~ +125
°C
Storage Temperature
TSTG
-65 ~ +150
°C
Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. It is guarantee by design, not.