TL432QPK

Product Overview

• Category: Integrated Circuit
• Use: Voltage Reference
• Characteristics: Adjustable, Precision, Low Dropout
• Package: TO-92, SOT-23, SOIC-8
• Essence: Shunt Regulator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Reference Voltage Range: 1.24V to 20V
• Output Current: Up to 100mA
• Operating Temperature Range: -40°C to +85°C
• Input Voltage Range: Up to 36V
• Line Regulation: 0.2% (Typical)
• Load Regulation: 0.4% (Typical)

Detailed Pin Configuration

The TL432QPK has three pins:

1. Anode (A): Connected to the input voltage.
2. Cathode (K): Connected to the ground or reference voltage.
3. Adjust (ADJ): Adjusts the output voltage.

Functional Features

• Provides a stable reference voltage for precision applications.
• Adjustable output voltage through the ADJ pin.
• Low dropout voltage allows operation with small voltage differentials.
• High accuracy and low temperature coefficient ensure precise regulation.

Advantages and Disadvantages

Advantages

• Wide range of adjustable output voltages.
• Low dropout voltage enables efficient operation.
• Excellent line and load regulation characteristics.
• Compact package options for space-constrained designs.
• Cost-effective solution for voltage reference applications.

Disadvantages

• Limited output current capability (up to 100mA).
• Requires external resistors for precise voltage adjustment.
• Not suitable for high-power applications.

Working Principles

The TL432QPK is a shunt regulator that maintains a stable output voltage by shunting excess current to the ground. It compares the reference voltage at the ADJ pin with a voltage divider network created by external resistors. By adjusting the resistance, the output voltage can be precisely set within the specified range.

Detailed Application Field Plans

The TL432QPK is commonly used in various applications, including:

1. Voltage References: Provides a stable reference voltage for analog circuits.
2. Power Supplies: Regulates the output voltage of power supplies.
3. Battery Charging: Controls the charging voltage in battery management systems.
4. Audio Amplifiers: Ensures accurate biasing and stability in audio amplifiers.
5. Instrumentation: Maintains precise voltage references in measurement equipment.

Detailed and Complete Alternative Models

• TL431AQDBZR: SOT-23 package, adjustable voltage reference.
• TLVH431AIDBZR: SOIC-8 package, adjustable precision shunt regulator.
• LM4040CIM3-2.5/NOPB: SOT-23 package, 2.5V precision voltage reference.

These alternative models offer similar functionality and can be considered as substitutes for the TL432QPK in various applications.

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