MIC5237-3.3YU

Product Overview

Category

MIC5237-3.3YU 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: 50µA
• Thermal Shutdown Protection
• Short Circuit Current Limiting
• Small Package Size: SOT-23-5

Package and Quantity

MIC5237-3.3YU is available in a 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: 50µA
• Line Regulation: 0.05%/V
• Load Regulation: 0.1%/mA
• Ripple Rejection: 70dB
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

MIC5237-3.3YU has a total of five pins, as follows:

1. GND (Ground): Connected to the ground reference of the circuit.
2. VIN (Input Voltage): Connects to the input voltage source.
3. VOUT (Output Voltage): Provides the regulated output voltage.
4. BYP (Bypass): Used for external capacitor connection to improve stability.
5. EN (Enable): Controls the enable/disable function of the regulator.

Functional Features

1. Low Dropout Voltage: The MIC5237-3.3YU exhibits a low dropout voltage of 120mV at 100mA, ensuring efficient regulation even with small input-output differentials.
2. Thermal Shutdown Protection: The regulator incorporates thermal shutdown protection, preventing damage due to excessive temperature.
3. Short Circuit Current Limiting: It features short circuit current limiting, safeguarding the device and the connected circuitry from potential damage during fault conditions.
4. Low Quiescent Current: With a quiescent current of only 50µA, the MIC5237-3.3YU minimizes power consumption in standby or low-load situations.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile applications.
• Low dropout voltage ensures efficient regulation.
• Thermal shutdown protection prevents overheating.
• Short circuit current limiting protects the device and connected circuitry.
• Low quiescent current minimizes power consumption.

Disadvantages

• Limited output current capacity (up to 150mA).
• Output voltage fixed at 3.3V, not adjustable.

Working Principles

MIC5237-3.3YU is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable output voltage. The regulator operates in a continuous mode, continuously adjusting the pass transistor to compensate for changes in load and input voltage.

Application Field Plans

The MIC5237-3.3YU finds applications in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable consumer electronics - Embedded systems - Industrial control systems - Automotive electronics - Communication equipment

Alternative Models

There are several alternative models available in the market that offer similar functionality to the MIC5237-3.3YU. Some notable alternatives include: - LM1117-3.3 - LT1763-3.3 - MCP1700-3302E

These models have comparable specifications and can be considered as substitutes for the MIC5237-3.3YU in different applications.

In conclusion, the MIC5237-3.3YU is a voltage regulator with a wide input voltage range, low dropout voltage, and thermal shutdown protection. It is commonly used in various electronic devices and systems. While it has limitations in terms of output current capacity and fixed output voltage, there are alternative models available that offer similar functionality.