ZTL431BQFFTA

Product Overview

Category

ZTL431BQFFTA belongs to the category of voltage references.

Use

It is commonly used as a precision shunt regulator in various electronic circuits.

Characteristics

• Provides a stable reference voltage for precise voltage regulation.
• Offers high accuracy and low temperature coefficient.
• Operates over a wide range of input voltages.
• Suitable for both linear and switching power supply applications.

Package

ZTL431BQFFTA is available in a small surface-mount SOT-23 package.

Essence

The essence of ZTL431BQFFTA lies in its ability to maintain a constant reference voltage regardless of changes in input voltage or load conditions.

Packaging/Quantity

This product is typically packaged in reels, with 3000 units per reel.

Specifications

• Reference Voltage: 2.5V
• Initial Accuracy: ±1%
• Temperature Coefficient: 50ppm/°C
• Operating Voltage Range: 2.5V to 36V
• Quiescent Current: 60µA
• Output Current: Up to 100mA

Detailed Pin Configuration

ZTL431BQFFTA has three pins:

1. Anode (A): Connected to the positive terminal of the input voltage.
2. Cathode (K): Connected to the ground or negative terminal of the circuit.
3. Reference (R): Provides the stable reference voltage.

Functional Features

• Precise Voltage Regulation: ZTL431BQFFTA ensures a stable output voltage by comparing the reference voltage with the feedback voltage.
• Adjustable Output: The output voltage can be adjusted by connecting external resistors to the reference pin.
• Low Power Consumption: It operates with low quiescent current, making it suitable for battery-powered devices.
• Short Circuit Protection: The device is designed to withstand short circuit conditions without damage.

Advantages and Disadvantages

Advantages

• High accuracy and stability.
• Wide operating voltage range.
• Low temperature coefficient.
• Small package size for space-constrained applications.
• Cost-effective solution for voltage regulation.

Disadvantages

• Limited output current capability.
• Requires external resistors for adjustable output.

Working Principles

ZTL431BQFFTA operates based on the principle of a shunt regulator. It compares the reference voltage with the feedback voltage and adjusts the current flowing through the internal resistor to maintain a constant output voltage. By controlling the current, it compensates for changes in input voltage or load conditions, ensuring a stable output.

Detailed Application Field Plans

ZTL431BQFFTA finds applications in various electronic systems, including:

1. Voltage regulators in power supplies.
2. Battery charging circuits.
3. Precision measurement instruments.
4. Audio amplifiers and preamplifiers.
5. Industrial control systems.
6. Automotive electronics.
7. LED lighting drivers.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to ZTL431BQFFTA are:

1. TL431: Similar functionality and specifications.
2. LM4040: Precision shunt voltage reference with different package options.
3. REF3030: Low-power voltage reference with adjustable output.

These alternative models offer similar features and can be used depending on specific application requirements.

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