TLVH431A-Q1 Datasheet, PDF (1/25 Pages) Texas Instruments – LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATORS

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TLVH431A-Q1
TLVH431B-Q1
SLVS906B – DECEMBER 2008 – REVISED MARCH 2011
LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATORS
Check for Samples: TLVH431A-Q1, TLVH431B-Q1
FEATURES
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• Qualified for Automotive Applications
• Low-Voltage Operation: Down to 1.24 V
• Reference Voltage Tolerances at 25°C
– 0.5% for B Grade
– 1% for A Grade
• Adjustable Output Voltage, V_O = V_REF to 18 V
• Wide Operating Cathode Current Range:
100 μA to 70 mA
• 0.25-Ω Typical Output Impedance
• –40°C to 125°C Specifications
DESCRIPTION/ORDERING INFORMATION
The TLVH431 devices are low-voltage 3-terminal adjustable voltage references, with thermal stability specified
over the automotive temperature range. Output voltage can be set to any value between V_REF (1.24 V) and 18 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 TLVH431 devices are ideal voltage reference in isolated feedback circuits
for 3-V to 3.3-V switching-mode power supplies. They have a typical output impedance of 0.25 Ω. Active output
circuitry provides a very sharp turn-on characteristic, making the TLVH431 an excellent replacement for
low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.
T_A
–40°C to 125°C
V_REF
TOLERANCE
0.5%
0.5%
1%
ORDERING INFORMATION⁽¹⁾
PACKAGE ⁽²⁾
ORDERABLE PART NUMBER
SOT-23-5 – DBV
SOT-23-3 - DBZ
SOT-23-5 – DBV
Reel of 3000
Reel of 3000
Reel of 3000
TLVH431BQDBVRQ1
TLVH431BQDBZRQ1
TLVH431AQDBVRQ1
TOP-SIDE MARKING
VOPQ
VPIQ
VOOQ
(1) 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 www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
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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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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