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TLVH431QDBZR

Name: TLVH431QDBZR
Rating: 4.7 (12 reviews)

IC VREF SHUNT ADJ 1.5% SOT23-3

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包 SOT23-3
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規格

Package	Tape & Reel (TR),Cut Tape (CT),Bulk
ProductStatus	Active
ReferenceType	Shunt
OutputType	Adjustable
Voltage-Output(Min/Fixed)	1.24V
Voltage-Output(Max)	18 V
Current-Output	70 mA
Tolerance	±1.5%
Current-Cathode	100 µA
OperatingTemperature	-40°C ~ 125°C (TA)
MountingType	Surface Mount
Package/Case	TO-236-3, SC-59, SOT-23-3

概述

Description

TLVH431QDBZR is TI’s automotive-grade, high-voltage programmable shunt regulator (TLV431 family). It acts like a precision Zener with a 2.495 V reference between REF and ANODE. By using external resistors from the output (cathode) to REF and ANODE, you set a regulated output approximately as Vout ≈ Vref × (1 + R1/R2) (Iref term is small). It shunts current to maintain the reference, useful as a fixed, adjustable reference or post-regulation element. Key points: high-voltage capability (HV version), low dynamic impedance, good temperature stability, and automotive-grade reliability (QDBZR). Typical applications include precision references, post-regulation for DC-DC converters, battery chargers, LED drivers, and overvoltage protection in energy-supply circuits.

Features

TLVH431QDBZR features (concise):
- Precision programmable shunt regulator with a 2.495 V reference
- Output set by external resistor divider (Vout = Vref(1 + R1/R2) + Iref·R1)
- Automotive-grade device: Q suffix, AEC-Q100 qualified
- Wide operating temperature: -40°C to +125°C
- Wide cathode-to-anode voltage rating (up to about 36 V for TLV/TL431 family variants)
- 3-pin DBZR package (automotive/ RoHS compliant)
- Low dynamic impedance with good line and load regulation
- Stable, industry-standard TL431-family behavior suitable for precision reference tasks
Notes: It’s a three-terminal precision shunt regulator; it sinks current to regulate the output through the external divider.

Package

3-pin SOT-23 package (SOT-23-3), Pb-free/RoHS compliant.

Pinout

Pin count: 3 (SOT-23/3 package).
Function: Precision adjustable shunt voltage reference (programmable zener). It maintains a fixed reference between REF and ANODE (about 2.495 V) by regulating current through the CATHODE, making it suitable for use in feedback/regulation circuits.
Typical pinout (SOT-23-3): Pin 1 = REF, Pin 2 = ANODE, Pin 3 = CATHODE.

Manufacturer

Manufactor: Texas Instruments (TI).
What kind of company: TI is an American multinational semiconductor company that designs and manufactures a broad range of integrated circuits and analog/embedded processing devices for various industries.

Application

TLVH431QDBZR is a 1.24 V adjustable shunt regulator. Applications: precision reference and error amplifier in linear and switching regulators; reference for DC-DC feedback; post-regulation for microcontroller/ADC power; battery charger/BMS circuits; LED drivers; instrumentation needing a low-drift reference.

Equivalent

TLVH431QDBZR is a programmable shunt regulator. Common equivalent parts include:
- TL431 family (TL431, TLV431, LMV431)
- AZ431 (Diodes Inc)
- KA431 (ROHM)
- NCP431 (ON Semiconductor)
- REF431 / ADM431 (Analog Devices)
These are cross-reference equivalents across major manufacturers.