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TL431-Q1 View Datasheet(PDF) - Texas Instruments

Part NameDescriptionManufacturer
TL431-Q1 ADJUSTABLE PRECISION SHUNT REGULATOR TI
Texas Instruments TI
TL431-Q1 Datasheet PDF : 23 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
D Qualified for Automotive Applications
D Operation From −40°C to 125°C
D Reference Voltage Tolerance at 25°C
− 1% . . . A Grade
− 0.5% . . . B Grade
D Typical Temperature Drift
− 14 mV (Q Temp)
D Low Output Noise
D 0.2-Typical Output Impedance
D Sink-Current Capability = 1 mA to 100 mA
D Adjustable Output Voltage = Vref to 36 V
TL431-Q1
ADJUSTABLE PRECISION SHUNT REGULATOR
SGLS302C − MARCH 2005 − REVISED APRIL 2008
DBV (SOT-23-5) PACKAGE
(TOP VIEW)
NC 1
NC† 2
CATHODE 3
5 ANODE
4 REF
NC − No internal connection
Pin 2 is connected internally to ANODE
(die substrate) and should be floating or
connected to ANODE.
TL431, TL431A, TL431B
DBZ (SOT-23-5) PACKAGE
(TOP VIEW)
CATHODE 1
description
5 ANODE
The TL431 is a three-terminal adjustable shunt
regulator with specified thermal stability over
REF 2
applicable automotive temperature ranges. The output voltage can be set to any value between Vref
(approximately 2.5 V) and 36 V, with two external resistors (see Figure 17). This device has a typical output
impedance of 0.2 . Active output circuitry provides a sharp turn-on characteristic, making this device an
excellent replacement for Zener diodes in many applications, such as onboard regulation, adjustable power
supplies, and switching power supplies.
Ordering Information{
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
SOT-23-5 (DBV)
Reel of 3000
TL431AQDBVRQ1
TACQ
−40°C to 125°C
SOT-23-3 (DBZ)
SOT-23-5 (DBV)
Reel of 3000
Reel of 3000
TL431BQDBZRQ1
TL431QDBVRQ1
T3FU
T3QU
SOT-23-3 (DBZ)
Reel of 3000
TL431AQDBZRQ1
TAQU
For the most current package and ordering information, see the Package Option Addendum at the end of this
document, or see the TI web site at http://www.ti.com.
Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.
symbol
REF
functional block diagram
ANODE
CATHODE
CATHODE
REF
+
_
Vref
ANODE
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerFLEX is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright 2008, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1
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