MIC4685-3.3BR

Product Overview

Category

The MIC4685-3.3BR belongs to the category of voltage regulators.

Use

This product is commonly used to regulate voltage in electronic circuits.

Characteristics

• Input Voltage Range: 4.5V to 16V
• Output Voltage: 3.3V
• Maximum Output Current: 500mA
• Dropout Voltage: 300mV
• Low Quiescent Current: 120µA
• Low Shutdown Current: 0.1µA
• Thermal Shutdown Protection
• Short Circuit Protection
• Overcurrent Protection

Package

The MIC4685-3.3BR comes in a small outline package (SOP) with 8 pins.

Essence

The essence of this product lies in its ability to provide a stable and regulated output voltage, ensuring proper functioning of electronic devices.

Packaging/Quantity

The MIC4685-3.3BR is typically packaged in reels or tubes, containing a quantity of 250 units per package.

Specifications

• Input Voltage Range: 4.5V to 16V
• Output Voltage: 3.3V ±2%
• Maximum Output Current: 500mA
• Dropout Voltage: 300mV at 500mA
• Quiescent Current: 120µA
• Shutdown Current: 0.1µA
• Operating Temperature Range: -40°C to +125°C
• Thermal Resistance: 160°C/W
• Package Type: SOP-8

Detailed Pin Configuration

The MIC4685-3.3BR has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. EN: Enable pin (active high)
4. FB: Feedback pin
5. VOUT: Output voltage pin
6. NC: No connection
7. NC: No connection
8. VREF: Reference voltage pin

Functional Features

• Voltage Regulation: The MIC4685-3.3BR provides a stable output voltage of 3.3V, regardless of input voltage fluctuations.
• Low Quiescent Current: The device consumes only 120µA of current in normal operation, minimizing power consumption.
• Thermal Shutdown Protection: In case of excessive temperature, the regulator shuts down to prevent damage.
• Short Circuit Protection: The device is protected against short circuits, ensuring the safety of the circuit and connected components.
• Overcurrent Protection: The MIC4685-3.3BR has built-in protection against excessive output current, safeguarding the circuit from damage.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for flexibility in various applications.
• Low quiescent current minimizes power consumption.
• Thermal shutdown and short circuit protection enhance reliability and safety.
• Compact SOP package enables easy integration into circuit designs.

Disadvantages

• Maximum output current of 500mA may limit its use in high-power applications.
• Dropout voltage of 300mV may cause a slight voltage drop across the regulator.

Working Principles

The MIC4685-3.3BR operates as a linear voltage regulator. It uses a feedback mechanism to compare the output voltage with a reference voltage and adjusts the internal circuitry to maintain a constant output voltage of 3.3V. The regulator utilizes a pass transistor to regulate the voltage and dissipates excess energy as heat.

Detailed Application Field Plans

The MIC4685-3.3BR finds application in various electronic devices and systems, including but not limited to: - Battery-powered devices - Embedded systems - Consumer electronics - Industrial control systems - Communication equipment - Automotive electronics

Detailed and Complete Alternative Models

• LM1117-3.3: A popular alternative with similar specifications and pin configuration.
• LT1763-3.3: Another alternative offering lower dropout voltage and higher maximum output current.
• TPS79633: An alternative with enhanced thermal performance and adjustable output voltage.

These alternatives provide similar functionality and can be considered based on specific application requirements.

In conclusion, the MIC4685-3.3BR is a voltage regulator that provides stable and regulated 3.3V output voltage. With its low quiescent current, thermal shutdown protection, and short circuit protection, it offers reliability and safety in various electronic applications. While it has limitations in terms of maximum output current and dropout voltage, there are alternative models available to suit different needs.