ZTL432AFFTA

Product Overview

Category

ZTL432AFFTA belongs to the category of voltage references.

Use

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

Characteristics

• High accuracy and stability
• Low temperature coefficient
• Wide operating voltage range
• Low output impedance
• Fast response time

Package

ZTL432AFFTA is available in a small surface-mount SOT-23 package.

Essence

The essence of ZTL432AFFTA is to provide a stable and precise voltage reference for electronic systems.

Packaging/Quantity

It is typically sold in reels containing 3000 units per reel.

Specifications

• Reference Voltage: 2.5V
• Initial Accuracy: ±0.5%
• Temperature Coefficient: 50ppm/°C
• Operating Voltage Range: 1.24V to 20V
• Output Current: Up to 100mA
• Quiescent Current: 60µA (typical)
• Dropout Voltage: 0.6V (typical)

Detailed Pin Configuration

ZTL432AFFTA has three pins:

1. Vref: The output pin that provides the reference voltage.
2. Anode: The input pin connected to the higher voltage supply.
3. Cathode: The ground pin connected to the lower voltage supply.

Functional Features

• Voltage regulation: ZTL432AFFTA maintains a constant reference voltage regardless of input voltage variations.
• Shunt regulation: It diverts excess current to maintain a stable output voltage.
• Overcurrent protection: It can handle short-circuit conditions without damage.
• Low power consumption: The quiescent current is minimal, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages

• High accuracy and stability ensure precise voltage references.
• Wide operating voltage range allows for versatile applications.
• Low output impedance enables efficient voltage regulation.
• Fast response time ensures quick stabilization of the output voltage.

Disadvantages

• Limited output current capacity may restrict its use in high-power applications.
• Sensitive to temperature changes, requiring additional compensation circuitry in some cases.

Working Principles

ZTL432AFFTA operates based on the principle of shunt regulation. It compares the reference voltage (2.5V) with the input voltage and adjusts the current flow through the shunt resistor to maintain a constant output voltage. By diverting excess current, it regulates the output voltage and protects the connected circuitry from voltage fluctuations.

Detailed Application Field Plans

ZTL432AFFTA finds extensive application in various electronic systems, including:

1. Power supplies: It ensures stable voltage references for power supply circuits.
2. Analog-to-digital converters (ADCs): It provides accurate reference voltages for precise analog signal conversion.
3. Voltage regulators: It acts as a precision shunt regulator in voltage regulator modules.
4. Battery management systems: It helps maintain consistent voltage levels in battery charging and discharging processes.
5. Sensor circuits: It offers reliable voltage references for sensor calibration and measurement circuits.

Detailed and Complete Alternative Models

1. TL431: A popular alternative with similar specifications and functionality.
2. LM4040: Another voltage reference IC with different package options and accuracy levels.
3. REF3030: Provides higher output current capability while maintaining good accuracy.

These alternative models can be considered based on specific requirements and design constraints.

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