S-8521D33MC-BXST2U

Basic Information Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

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

Package: BXST2U (SOT-89-5)

Essence: The S-8521D33MC-BXST2U is a voltage regulator IC that provides a stable output voltage with low dropout. It is commonly used in various electronic devices to regulate and maintain a constant voltage level.

Packaging/Quantity: The S-8521D33MC-BXST2U is typically packaged in a BXST2U package, which is a small outline transistor package with five pins. It is available in reels or tubes, with a quantity of 3000 units per reel/tube.

Specifications

• Input Voltage Range: 2.5V - 6.0V
• Output Voltage: 3.3V ±2%
• Dropout Voltage: 200mV (typical)
• Quiescent Current: 40μA (typical)
• Output Current: 150mA (maximum)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-8521D33MC-BXST2U has the following pin configuration:

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| | --| V IN|-- Pin 1: Input Voltage --|____| | | --| GND|-- Pin 2: Ground --|____| | | --| V O |-- Pin 3: Output Voltage --|____| | | --| NC |-- Pin 4: No Connection --|____| | | --| EN |-- Pin 5: Enable (Shutdown) Control --|____| ```

Functional Features

• Low dropout voltage ensures stable output even when the input voltage is close to the desired output voltage.
• High output voltage accuracy provides precise regulation of the output voltage.
• Low quiescent current minimizes power consumption when the regulator is in standby mode.
• Overcurrent protection safeguards the IC and connected components from excessive current flow.
• Thermal shutdown protection prevents the IC from overheating by shutting down the regulator when the temperature exceeds a certain threshold.

Advantages and Disadvantages

Advantages: - Stable output voltage with low dropout - High output voltage accuracy - Low power consumption in standby mode - Built-in overcurrent and thermal protection

Disadvantages: - Limited maximum output current (150mA)

Working Principles

The S-8521D33MC-BXST2U operates as a linear voltage regulator. It regulates the output voltage by comparing the reference voltage with the feedback voltage obtained from a voltage divider network. The internal circuitry adjusts the pass transistor to maintain a constant output voltage, compensating for changes in the input voltage and load conditions.

Detailed Application Field Plans

The S-8521D33MC-BXST2U finds applications in various electronic devices that require a stable voltage supply. Some common application fields include: - Battery-powered devices - Portable consumer electronics - Industrial control systems - Automotive electronics - Communication equipment

Detailed and Complete Alternative Models

• S-8521D33MC-BXST1U: Similar specifications but packaged in BXST1U (SOT-23-5)
• S-8521D33MC-BNXST2U: Similar specifications but with an enable/disable function and packaged in BNXST2U (SOT-89-5)
• S-8521D33MC-BXST3U: Similar specifications but with a higher output current capability and packaged in BXST3U (SOT-89-5)

These alternative models provide similar functionality and can be used as substitutes for the S-8521D33MC-BXST2U depending on specific requirements.

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