S-8521A33MC-AXST2U

Basic Information Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - Low dropout voltage regulator - High output voltage accuracy - Low quiescent current - Overcurrent protection - Thermal shutdown protection

Package: AXST2U (SOT-89-5)

Essence: The S-8521A33MC-AXST2U is a power management IC designed for low dropout voltage regulation in various electronic devices.

Packaging/Quantity: The S-8521A33MC-AXST2U is available in a SOT-89-5 package, with a quantity of 100 units per reel.

Specifications

• Input Voltage Range: 2.0V to 6.0V
• Output Voltage: 3.3V
• Dropout Voltage: 200mV (typical) at 100mA load current
• Quiescent Current: 45µA (typical)
• Output Current: 500mA (maximum)
• Line Regulation: ±0.05% (typical)
• Load Regulation: ±0.2% (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-8521A33MC-AXST2U has the following pin configuration:

1. VIN (Input Voltage)
2. GND (Ground)
3. CE (Chip Enable)
4. VOUT (Output Voltage)
5. NC (No Connection)

Functional Features

• Low dropout voltage allows efficient power conversion even with small input-output voltage differentials.
• High output voltage accuracy ensures stable and reliable performance.
• Low quiescent current minimizes power consumption during standby or idle modes.
• Overcurrent protection safeguards the IC and connected devices from excessive current.
• Thermal shutdown protection prevents overheating and potential damage to the IC.

Advantages

• Wide input voltage range allows compatibility with various power sources.
• High output voltage accuracy ensures precise voltage regulation for sensitive components.
• Low quiescent current minimizes power wastage and extends battery life.
• Overcurrent protection enhances system reliability by preventing damage due to excessive current.
• Thermal shutdown protection safeguards the IC from overheating, ensuring long-term durability.

Disadvantages

• Limited maximum output current may restrict usage in high-power applications.
• The SOT-89-5 package may require additional space on the PCB compared to smaller packages.

Working Principles

The S-8521A33MC-AXST2U operates as a low dropout voltage regulator. It regulates the input voltage to a stable 3.3V output voltage, even when the input voltage is slightly higher than the desired output voltage. This is achieved by utilizing a pass transistor that adjusts its resistance to maintain the desired output voltage.

Detailed Application Field Plans

The S-8521A33MC-AXST2U can be used in various electronic devices requiring stable and regulated power supply, such as: - Battery-powered devices - Portable consumer electronics - Industrial control systems - Automotive applications - Medical devices

Detailed and Complete Alternative Models

Some alternative models to the S-8521A33MC-AXST2U include: - S-8521A33MC-BKST2U - S-8521A33MC-CBST2U - S-8521A33MC-DKST2U - S-8521A33MC-EKST2U

These models offer similar functionality and characteristics but may differ in package type or other minor specifications.

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