SC2903VDR2G

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Thermal shutdown protection - Short circuit current limiting - Overcurrent protection - Reverse battery protection

Package: SOT-223

Essence: The SC2903VDR2G is a voltage regulator IC that provides a stable output voltage for various electronic devices.

Packaging/Quantity: The SC2903VDR2G is typically sold in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage Range: 1.2V to 5.0V
• Dropout Voltage: 0.4V (typical)
• Output Current: Up to 500mA
• Quiescent Current: 75µA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The SC2903VDR2G has the following pin configuration:

____ | | IN | | GND |____| | | OUT| | |____|

Functional Features

• Low Dropout Voltage: The SC2903VDR2G has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• High Output Current Capability: With a maximum output current of 500mA, the SC2903VDR2G can power a wide range of electronic devices.
• Thermal Shutdown Protection: The IC includes thermal shutdown protection, which prevents overheating and damage to the device.
• Short Circuit Current Limiting: In the event of a short circuit, the SC2903VDR2G limits the output current to protect the device and connected components.
• Overcurrent Protection: The IC also provides overcurrent protection, safeguarding against excessive current flow.
• Reverse Battery Protection: The SC2903VDR2G is designed to withstand reverse battery connection without damage.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation even with low input voltages. - High output current capability allows for powering various electronic devices. - Thermal shutdown protection prevents overheating and damage. - Short circuit current limiting protects the device and connected components. - Overcurrent protection safeguards against excessive current flow. - Reverse battery protection prevents damage from reverse battery connection.

Disadvantages: - Limited output current compared to some other voltage regulator ICs. - SOT-223 package may require additional space on the PCB.

Working Principles

The SC2903VDR2G operates as a linear voltage regulator. It regulates the output voltage by comparing the reference voltage with the feedback voltage. Any difference between the two voltages is amplified and used to adjust the pass transistor, which controls the output voltage. The internal circuitry of the IC ensures stable and regulated output voltage despite variations in input voltage and load conditions.

Detailed Application Field Plans

The SC2903VDR2G can be used in various applications that require a stable and regulated output voltage. Some potential application fields include: 1. Battery-powered devices 2. Portable electronics 3. Automotive electronics 4. Industrial control systems 5. Communication equipment

Detailed and Complete Alternative Models

Some alternative models to the SC2903VDR2G that offer similar functionality are: 1. LM1117-ADJ 2. LT1086-5 3. MCP1700-3302E/TO

These alternative models provide voltage regulation with comparable specifications and features.

In conclusion, the SC2903VDR2G is a voltage regulator IC that offers low dropout voltage, high output current capability, and various protection features. It is commonly used in battery-powered devices, portable electronics, automotive electronics, industrial control systems, and communication equipment. Alternative models such as LM1117-ADJ, LT1086-5, and MCP1700-3302E/TO can be considered for similar applications.