MIC4681-3.3BM

Product Overview

Category

The MIC4681-3.3BM belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

• Input Voltage Range: 4.5V to 16V
• Output Voltage: 3.3V
• Maximum Output Current: 1A
• Dropout Voltage: 300mV at 1A
• Low Quiescent Current: 120µA
• Package Type: SOT-23-5
• Operating Temperature Range: -40°C to +125°C

Packaging/Quantity

The MIC4681-3.3BM is available in a SOT-23-5 package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 4.5V to 16V
• Output Voltage: 3.3V ±2%
• Maximum Output Current: 1A
• Dropout Voltage: 300mV at 1A
• Quiescent Current: 120µA
• Line Regulation: 0.05%/V
• Load Regulation: 0.1%/A
• Ripple Rejection: 70dB
• Thermal Shutdown Protection: Yes
• Short Circuit Protection: Yes

Detailed Pin Configuration

The MIC4681-3.3BM has five pins arranged as follows:

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Pin 1: VIN (Input Voltage) Pin 2: GND (Ground) Pin 3: EN (Enable) Pin 4: BYP (Bypass Capacitor) Pin 5: VOUT (Output Voltage)

Functional Features

• Wide input voltage range allows for flexibility in various applications.
• Low dropout voltage ensures efficient power conversion.
• Thermal shutdown protection prevents damage due to excessive temperature.
• Short circuit protection safeguards the regulator and connected components.

Advantages

• Compact SOT-23-5 package enables space-saving designs.
• Low quiescent current minimizes power consumption.
• Excellent line and load regulation for stable output voltage.
• High ripple rejection ratio improves performance in noisy environments.

Disadvantages

• Limited maximum output current of 1A may not be suitable for high-power applications.
• Dropout voltage of 300mV at 1A may result in higher power dissipation.

Working Principles

The MIC4681-3.3BM is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage, adjusting the pass transistor's resistance to maintain a stable output voltage.

Detailed Application Field Plans

The MIC4681-3.3BM can be used in various applications, including: - Battery-powered devices - Portable electronics - Industrial control systems - Automotive electronics - Communication equipment

Detailed and Complete Alternative Models

Some alternative models to the MIC4681-3.3BM include: - LM1117-3.3 - LT1763-3.3 - TPS73633DBVR - ADP3339AKCZ-3.3-R7

These alternatives offer similar functionality and specifications, providing options for different design requirements.

In conclusion, the MIC4681-3.3BM is a voltage regulator with a wide input voltage range, low dropout voltage, and compact package. It offers excellent line and load regulation, making it suitable for various applications. However, its limited maximum output current and dropout voltage may restrict its use in high-power scenarios. Engineers can consider alternative models based on their specific design needs.