TDA1085C

Product Overview

Category

TDA1085C belongs to the category of integrated circuits (ICs).

Use

The TDA1085C is primarily used as a voltage regulator in electronic devices.

Characteristics

• Voltage regulation: The TDA1085C ensures stable output voltage regardless of input fluctuations.
• High efficiency: It operates with high efficiency, minimizing power loss.
• Compact package: The IC is available in a compact package, making it suitable for space-constrained applications.
• Low noise: It produces minimal electrical noise during operation.

Package and Quantity

The TDA1085C is typically packaged in a small outline transistor (SOT) package. It is commonly sold in quantities of 10 or more.

Specifications

• Input voltage range: 8V to 35V
• Output voltage: 5V
• Maximum output current: 1A
• Operating temperature range: -40°C to +125°C
• Quiescent current: 4mA

Pin Configuration

The TDA1085C has the following pin configuration:

1. VCC: Power supply input
2. GND: Ground reference
3. VIN: Input voltage
4. VOUT: Output voltage
5. ADJ: Adjustable pin for fine-tuning the output voltage

Functional Features

1. Voltage regulation: The TDA1085C maintains a constant output voltage even when the input voltage varies.
2. Overvoltage protection: It safeguards the connected circuitry by preventing the output voltage from exceeding a predefined threshold.
3. Short-circuit protection: In case of a short circuit, the IC shuts down to protect itself and the connected components.
4. Thermal shutdown: If the operating temperature exceeds the specified limit, the IC automatically shuts down to prevent damage.

Advantages and Disadvantages

Advantages

• Stable output voltage ensures reliable performance of connected devices.
• High efficiency minimizes power wastage and extends battery life.
• Compact package allows for easy integration into various electronic devices.
• Low noise operation ensures minimal interference with other components.

Disadvantages

• Limited maximum output current may restrict its use in high-power applications.
• The adjustable pin requires additional circuitry for precise voltage regulation.

Working Principles

The TDA1085C operates as a linear voltage regulator. It compares the output voltage with a reference voltage and adjusts the internal circuitry to maintain a constant output voltage. By regulating the input voltage, it compensates for fluctuations and provides a stable output voltage.

Application Field Plans

The TDA1085C finds applications in various electronic devices, including: 1. Power supplies: It is used in power supply units to regulate the output voltage. 2. Automotive electronics: The IC ensures stable voltage supply to automotive systems, such as audio amplifiers and lighting modules. 3. Consumer electronics: It is employed in devices like televisions, DVD players, and set-top boxes to maintain consistent voltage levels.

Alternative Models

Several alternative models can be considered as replacements for the TDA1085C. Some popular alternatives include: - LM7805: A widely used linear voltage regulator with similar specifications. - LT1085: A high-current linear voltage regulator suitable for demanding applications. - LM317: An adjustable linear voltage regulator offering flexibility in voltage regulation.

These alternative models provide similar functionality and can be chosen based on specific requirements.

In conclusion, the TDA1085C is an integrated circuit used for voltage regulation in electronic devices. Its compact size, high efficiency, and stable output voltage make it suitable for various applications. However, its limited maximum output current and the need for additional circuitry for precise voltage regulation are notable considerations.