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TLV431 Datasheet(Fiches technique) 1 Page - Texas Instruments

Numéro de pièce TLV431
Description  LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATORS
Télécharger  31 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TLV431 Datasheet(HTML) 1 Page - Texas Instruments

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TLV431, TLV431A, TLV431B
LOW VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR
SLVS139S ? JULY 1996 ? REVISED JANUARY 2006
1
POST OFFICE BOX 655303
? DALLAS, TEXAS 75265
D Low-Voltage Operation ...VREF = 1.24 V
D Adjustable Output Voltage, VO = VREF to 6 V
D Reference Voltage Tolerances at 255C
? 0.5% for TLV431B
? 1% for TLV431A
? 1.5% for TLV431
D Typical Temperature Drift
? 4 mV (0
5C to 705C)
? 6 mV (?40
5C to 855C)
? 11 mV (?40
5C to 1255C)
D Low Operational Cathode Current . . .
80
A Typ
D 0.25-? Typical Output Impedance
D Ultra-Small SC-70 Package Offers 40%
Smaller Footprint Than SOT-23-3
D See TLVH431 and TLVH432 for
? Wider VKA (1.24 V to 18 V) and IK (80 mA)
? Additional SOT-89 Package
? Multiple Pinouts for SOT-23-3 and SOT-89
Packages
REF
ANODE
CATHODE
LP (TO-92/TO-226) PACKAGE
(TOP VIEW)
NC ? No internal connection
* For TLV431, TLV431A: NC ? No internal connection
* For TLV431B: Pin 2 is attached to Substrate and
must be connected to ANODE or
left open.
DBV (SOT-23-5) PACKAGE
(TOP VIEW)
1
2
3
5
4
NC
*
CATHODE
ANODE
REF
DBZ (SOT-23-3) PACKAGE
(TOP VIEW)
1
2
3
REF
CATHODE
ANODE
D (SOIC) PACKAGE
(TOP VIEW)
1
2
3
4
8
7
6
5
REF
ANODE
ANODE
NC
CATHODE
ANODE
ANODE
NC
DCK (SC-70) PACKAGE
(TOP VIEW)
1
2
3
6
5
4
CATHODE
NC
REF
ANODE
NC
NC
NC ? No internal connection
PK (SOT-89) PACKAGE
(TOP VIEW)
1
3
2
REF
CATHODE
ANODE
ANODE
description/ordering information
The TLV431 is a low-voltage 3-terminal adjustable voltage reference with specified thermal stability over
applicable industrial and commercial temperature ranges. Output voltage can be set to any value between VREF
(1.24 V) and 6 V with two external resistors (see Figure 2). These devices operate from a lower voltage
(1.24 V) than the widely used TL431 and TL1431 shunt-regulator references.
When used with an optocoupler, the TLV431 is an ideal voltage reference in isolated feedback circuits for 3-V
to 3.3-V switching-mode power supplies. These devices have a typical output impedance of 0.25
?. Active
output circuitry provides a very sharp turn-on characteristic, making them excellent replacements for
low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.
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.
Copyright
? 2006, Texas Instruments Incorporated
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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Numéro de composants électroniques

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