ZLDO1117QG33TA

Product Overview

Category

ZLDO1117QG33TA belongs to the category of low-dropout voltage regulators.

Use

This product is commonly used in electronic circuits to regulate and stabilize voltage levels.

Characteristics

• Low dropout voltage: The ZLDO1117QG33TA has a very low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• High accuracy: It provides precise voltage regulation with minimal deviation from the set output voltage.
• Thermal protection: The regulator incorporates thermal shutdown circuitry to prevent damage due to excessive heat.
• Current limiting: It includes current limit protection to safeguard against overloading and short circuits.

Package

The ZLDO1117QG33TA is available in a TO-252 package, also known as DPAK (Plastic Packaged Power Transistor).

Essence

This voltage regulator is designed to provide a stable output voltage by regulating the input voltage, ensuring reliable operation of electronic devices.

Packaging/Quantity

The ZLDO1117QG33TA is typically packaged in reels or tubes, containing a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 15V
• Output Voltage: 3.3V
• Dropout Voltage: 0.6V (typical)
• Maximum Output Current: 800mA
• Line Regulation: ±0.2% (typical)
• Load Regulation: ±0.4% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The ZLDO1117QG33TA has three pins:

1. VIN (Pin 1): Input voltage pin.
2. GND (Pin 2): Ground reference pin.
3. VOUT (Pin 3): Output voltage pin.

Functional Features

• Voltage Regulation: The ZLDO1117QG33TA maintains a constant output voltage of 3.3V, regardless of variations in the input voltage or load conditions.
• Low Dropout: With a low dropout voltage of 0.6V, this regulator can operate efficiently even when the input voltage is close to the desired output voltage.
• Thermal Protection: The device incorporates thermal shutdown circuitry to prevent overheating and subsequent damage.
• Current Limiting: It includes current limit protection to prevent overloading and short circuits, ensuring the safety of connected devices.

Advantages and Disadvantages

Advantages

• High accuracy and stability in voltage regulation.
• Low dropout voltage ensures efficient operation.
• Thermal protection prevents damage due to excessive heat.
• Current limit protection safeguards against overloading and short circuits.

Disadvantages

• Limited maximum output current of 800mA.
• Requires an input voltage within the range of 4.5V to 15V.

Working Principles

The ZLDO1117QG33TA operates based on the principle of a linear voltage regulator. It compares the output voltage with a reference voltage and adjusts the internal pass transistor to maintain a stable output voltage. The dropout voltage is minimized by using a low resistance pass element.

Detailed Application Field Plans

The ZLDO1117QG33TA finds applications in various electronic systems, including but not limited to: - Power supplies for microcontrollers and digital ICs. - Battery-powered devices requiring stable voltage levels. - Automotive electronics. - Industrial control systems. - Communication equipment.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the ZLDO1117QG33TA are: - LM1117-3.3: A popular low-dropout voltage regulator with similar specifications. - LT1763: A high-performance, low-noise LDO regulator suitable for precision applications. - NCP1117: A low-dropout voltage regulator designed for cost-sensitive applications.

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

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