ADP121-AUJZ30R7

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: Low Dropout Regulator (LDO)
• Package: SOT-23-5
• Essence: Voltage Regulator
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.3V to 5.5V
• Output Voltage Range: 1.2V to 3.3V
• Maximum Output Current: 150mA
• Dropout Voltage: 200mV at 100mA
• Quiescent Current: 45µA
• Line Regulation: ±0.05% typical
• Load Regulation: ±0.1% typical
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The ADP121-AUJZ30R7 is a 5-pin device with the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for setting the output voltage
4. EN: Enable pin for turning the regulator on/off
5. VOUT: Output voltage pin

Functional Features

• Low dropout voltage for efficient power conversion
• Wide input voltage range allows flexibility in power supply selection
• Adjustable output voltage for various applications
• Low quiescent current for power-saving operation
• Excellent line and load regulation for stable output voltage
• Thermal shutdown and current limit protection for device safety

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient power conversion - Wide input voltage range provides flexibility in power supply selection - Adjustable output voltage accommodates various application requirements - Low quiescent current enables power-saving operation - Excellent line and load regulation ensures stable output voltage - Thermal shutdown and current limit protection enhance device safety

Disadvantages: - Limited maximum output current of 150mA may not be suitable for high-power applications - SOT-23-5 package may require additional space on the PCB compared to smaller packages

Working Principles

The ADP121-AUJZ30R7 is a low dropout voltage regulator that operates by maintaining a constant voltage difference between the input and output. It uses a pass transistor to regulate the output voltage based on the feedback received from the FB pin. The EN pin allows the user to enable or disable the regulator as needed.

Detailed Application Field Plans

The ADP121-AUJZ30R7 is commonly used in various applications, including but not limited to:

1. Battery-powered devices: Portable electronics, wearable devices, and IoT sensors benefit from the low dropout voltage and low quiescent current of the ADP121-AUJZ30R7.
2. Industrial equipment: Control systems, motor drives, and instrumentation devices can utilize the stable output voltage and wide input voltage range of this regulator.
3. Automotive electronics: ADP121-AUJZ30R7 can be employed in automotive infotainment systems, lighting modules, and other vehicle electronics due to its robust performance and temperature range.

Detailed and Complete Alternative Models

1. ADP122-AUJZ30R7: Similar to ADP121-AUJZ30R7, but with a higher maximum output current of 300mA.
2. ADP123-AUJZ30R7: Offers adjustable output voltage and a maximum output current of 500mA.
3. ADP124-AUJZ30R7: Provides dual outputs with adjustable voltages and a maximum output current of 150mA per channel.

These alternative models offer similar functionality to the ADP121-AUJZ30R7 but with varying specifications to suit different application requirements.

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