MIC5239-3.3BMM

Product Overview

Category

MIC5239-3.3BMM belongs to the category of voltage regulators.

Use

It is commonly used to regulate and stabilize voltage in electronic circuits.

Characteristics

• Input Voltage Range: 2.5V to 16V
• Output Voltage: 3.3V
• Maximum Output Current: 150mA
• Low Dropout Voltage: 120mV at 100mA
• Low Quiescent Current: 75µA
• Thermal Shutdown Protection
• Short Circuit Current Limiting
• Small Package Size: SOT-23-5

Packaging/Quantity

MIC5239-3.3BMM is available in a small SOT-23-5 package. It is typically sold in reels containing 3000 units.

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage: 3.3V ±2%
• Output Current: Up to 150mA
• Dropout Voltage: 120mV at 100mA
• Quiescent Current: 75µA
• Line Regulation: 0.05%/V
• Load Regulation: 0.1%/mA
• Ripple Rejection: 70dB
• Operating Temperature Range: -40°C to +125°C
• Package Type: SOT-23-5

Pin Configuration

MIC5239-3.3BMM has a total of 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

1. Low Dropout Voltage: The MIC5239-3.3BMM exhibits a low dropout voltage of only 120mV at 100mA, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
2. Thermal Shutdown Protection: The regulator includes built-in thermal shutdown protection, which prevents damage due to excessive temperature.
3. Short Circuit Current Limiting: It incorporates short circuit current limiting to protect the device and the connected circuitry from damage in case of a short circuit.
4. Low Quiescent Current: With a quiescent current of only 75µA, the MIC5239-3.3BMM minimizes power consumption when the load is light or idle.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile applications.
• Low dropout voltage ensures efficient voltage regulation.
• Small package size makes it suitable for space-constrained designs.
• Thermal shutdown protection prevents overheating and damage.
• Short circuit current limiting protects the device and connected circuitry.

Disadvantages

• Limited maximum output current of 150mA may not be sufficient for high-power applications.
• Output voltage fixed at 3.3V may not be suitable for all voltage requirements.

Working Principles

MIC5239-3.3BMM 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 obtained from a voltage divider network. The pass transistor adjusts its resistance to maintain a constant output voltage despite variations in the input voltage and load conditions.

Application Field Plans

The MIC5239-3.3BMM can be used in various electronic applications, including but not limited to: - Battery-powered devices - Portable consumer electronics - Embedded systems - Industrial control systems - Automotive electronics

Alternative Models

1. LM1117-3.3: Similar specifications and pin configuration, available in different package options.
2. LT1763-3.3: Higher maximum output current (500mA) and lower dropout voltage (300mV).
3. MCP1700-3302E: Lower quiescent current (1.6µA) and wider input voltage range (1.8V to 6.0V).

These alternative models offer similar functionality and can be considered based on specific application requirements.

In conclusion, the MIC5239-3.3BMM is a voltage regulator with a wide input voltage range, low dropout voltage, and thermal shutdown protection. It is commonly used in various electronic applications and offers advantages such as small package size and short circuit current limiting. However, it has limitations in terms of maximum output current and fixed output voltage. Alternative models with different specifications are available for specific application needs.