TL431AIDBZR,215

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TL431AIDBZR,215

IC VREF SHUNT ADJ 1% TO236AB

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  • Fr. Teil #TL431AIDBZR,215
  • Paket SOT23-3
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Spezifikationen

Package Tape & Reel (TR),Cut Tape (CT),Bulk
ProductStatus Active
ReferenceType Shunt
OutputType Adjustable
Voltage-Output(Min/Fixed) 2.495V
Voltage-Output(Max) 36 V
Current-Output 100 mA
Tolerance ±1%
Current-Cathode 600 µA
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case TO-236-3, SC-59, SOT-23-3

Übersicht

Description

TL431AIDBZR is TI’s version of the TL431 adjustable shunt regulator (a programmable precision reference). It behaves like a controllable zener plus error amplifier, allowing you to set an output voltage with an external resistor divider.
Key points:
- Reference: 2.495 V at the REF pin.
- Three pins: ANODE (ground), CATHODE (output/shunt to the supply), REF (feedback input).
- How it works: When VREF reaches ~2.495 V, the device conducts to pull current from the cathode, regulating Vout via the divider R1 (top) and R2 (bottom): Vout ≈ Vref(1 + R1/R2) (plus a small IREF·R1 term).
- Current range: regulates with a knee current about 1 mA and can sink up to roughly 100 mA (depends on package and variant).
- Applications: feedback regulation in linear and switching power supplies, adjustable references, precision shunts.
- Package/variant: AIDBZR indicates a RoHS/Pb-free package variant in TI’s TL431 family.
For exact electrical specs, tolerances, and recommended applications, refer to the TL431AIDBZR datasheet.

Features

TL431AIDBZR,215 features (TL431 family, A-grade shunt regulator):
- 2.495 V precision reference (programmable zener) with external divider
- Three-terminal device: cathode, anode, reference; adjustable output via R1/R2
- Vout formula: Vout ≈ Vref(1 + R1/R2) + Iref·R1
- Cathode current range up to 100 mA (Imin for regulation ~1 mA)
- Wide VKA (cathode-to-anode) range up to about 36 V
- Low dynamic impedance and fast transient response
- Industrial temperature range: typically -40°C to +125°C
- Pb-free/RoHS-compliant; available in common packages (SOT-23-3, TO-92, etc.)
- Suitable as a precision adjustable reference, shunt regulator, or programmable zener in power-supply/regulation circuits
Note: exact accuracy and package options may vary by specific lot/variant; “215”/“AIDBZR” denotes packaging and lot code.

Package

Package type: SOT-23-3 (3-pin) surface-mount. The DBZR suffix indicates RoHS-compliant, tape-and-reel packaging. (215 is likely a date/lot code.)

Pinout

- Pin count: 3 pins.
- Function: TL431AIDBZR is an adjustable precision shunt regulator (programmable reference). It maintains the reference pin at about 2.495 V by sinking current from the cathode to the anode; used with feedback to regulate a supply (acts like a programmable zener). Pinout (typical, SOT-23/TO-92): Pin 1 = Reference, Pin 2 = Anode, Pin 3 = Cathode.

Manufacturer

Manufacturer: Texas Instruments (TI).
What kind of company: TI is an American multinational corporation that designs and manufactures semiconductors and integrated circuits, with a focus on analog, mixed-signal, and digital signal processing products (e.g., voltage references like TL431).

Application

TL431AIDBZR is a programmable precision shunt regulator. Common applications include:
- Adjustable voltage reference for precision circuits (2.495 V nominal)
- Error amplifier/feedback element in switching regulators (with optocoupler) and linear regulators
- Programmable zener in DC power supplies, LED drivers, and battery chargers
- Voltage reference for ADC/DAC and op-amp circuits
- Overvoltage protection and clamp/regulation loops
(Note: packaging AIDBZR is a specific TO-92/SOT-23 variant; functionality remains the same.)

Equivalent

TL431AIDBZR,215 is a 2.495V programmable shunt regulator. Equivalents include: TL431 (A/B/C variants), LM431 (National Semiconductor/TI), TLV431 (TI), AZ431 (Diodes Inc), KA431 (various vendors), NCP431 / NCP431A (ON Semiconductor), NJM431 (New Japan Radio). All are 2.495V shunt regulators in similar packages (SOT-23-3, TO-92). Check datasheets for exact accuracy and packaging.

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