XC6121A450MR-G

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, High Accuracy, Low Quiescent Current
• Package: SOT-23-5
• Essence: Linear Voltage Regulator
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage Range: 1.2V to 5.5V
• Output Current: 150mA
• Dropout Voltage: 200mV (typical)
• Quiescent Current: 30µA (typical)
• Line Regulation: ±0.05% (typical)
• Load Regulation: ±0.3% (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The XC6121A450MR-G has a SOT-23-5 package with the following pin configuration:

```

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| | --| VOUT|-- Pin 1 --| GND |-- Pin 2 --| EN |-- Pin 3 --| NC |-- Pin 4 --| VIN |-- Pin 5 |____| ```

Functional Features

• Low dropout voltage allows for efficient regulation even with small input-output voltage differentials.
• High accuracy ensures precise output voltage regulation.
• Low quiescent current minimizes power consumption in standby mode.
• Built-in overcurrent protection safeguards the circuit from excessive current flow.
• Thermal shutdown protection prevents damage due to overheating.

Advantages and Disadvantages

Advantages: - Compact SOT-23-5 package enables space-saving designs. - Wide input voltage range provides flexibility in various applications. - Excellent line and load regulation ensures stable output voltage. - Low quiescent current prolongs battery life in portable devices.

Disadvantages: - Limited output current may not be suitable for high-power applications. - Dropout voltage of 200mV may restrict usage in low voltage scenarios.

Working Principles

The XC6121A450MR-G is a linear voltage regulator that maintains a constant output voltage regardless of changes in the input voltage or load conditions. It achieves this by using a pass transistor to regulate the voltage drop across it. The internal circuitry compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain the desired output voltage.

Detailed Application Field Plans

The XC6121A450MR-G is commonly used in various electronic devices and systems, including but not limited to:

1. Battery-powered devices such as smartphones, tablets, and portable media players.
2. Embedded systems and microcontroller-based projects.
3. Automotive electronics for voltage regulation in vehicle components.
4. Industrial control systems requiring stable power supply.
5. Consumer electronics like digital cameras, audio players, and handheld gaming consoles.

Detailed and Complete Alternative Models

1. XC6121B450MR-G: Similar specifications with enhanced overcurrent protection.
2. XC6121C450MR-G: Higher output current capability of 300mA.
3. XC6121D450MR-G: Lower dropout voltage of 100mV for ultra-low voltage applications.
4. XC6121E450MR-G: Extended temperature range up to -40°C to +125°C.

These alternative models provide options based on specific requirements and operating conditions.

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