TL431-Q1 Datasheet, PDF (1/26 Pages) Texas Instruments – ADJUSTABLE PRECISION SHUNT REGULATOR

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-Ω Typical Output Impedance
D Sink-Current Capability = 1 mA to 100 mA
D Adjustable Output Voltage = V_ref to 36 V
TL431−Q1
ADJUSTABLE PRECISION SHUNT REGULATOR
SGLS302D − MARCH 2005 − REVISED MARCH 2013
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−Q1
DBZ (SOT-23-3) PACKAGE
(TOP VIEW)
CATHODE ¹
description
3 ANODE
The TL431 is a three-terminal adjustable shunt
REF ²
regulator with specified thermal stability over
applicable automotive temperature ranges. The output voltage can be set to any value between V_ref
(approximately 2.5 V) and 36 V, with two external resistors (see Figure 17). This device has a typical output
impedance of 0.2 Ω. 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^{
T_A
PACKAGE^†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
SOT-23-5 (DBV)
Reel of 3000
TL431AQDBVRQ1
TACQ
−40°C to 125°C
SOT-23-5 (DBV)
Reel of 3000
TL431QDBVRQ1
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
+
_
V_ref
ANODE
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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.
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