MIC4574-3.3BN

Product Overview

Category

MIC4574-3.3BN belongs to the category of voltage regulators.

Use

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

Characteristics

• Input Voltage Range: 4.5V to 16V
• Output Voltage: 3.3V
• Maximum Output Current: 1.5A
• Dropout Voltage: 0.6V (typical)
• Package Type: TO-263-5
• Operating Temperature Range: -40°C to +125°C

Packaging/Quantity

MIC4574-3.3BN is available in a TO-263-5 package. It is typically sold in reels or tubes, with a quantity of 1000 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 16V
• Output Voltage: 3.3V ±2%
• Output Current: Up to 1.5A
• Dropout Voltage: 0.6V (typical), 1.0V (maximum) at 1.5A
• Line Regulation: 0.02%/V
• Load Regulation: 0.04%/A
• Quiescent Current: 120µA (typical)
• Ripple Rejection: 70dB (typical)
• Thermal Shutdown Protection: Yes
• Short Circuit Protection: Yes
• Enable Pin: Yes

Detailed Pin Configuration

MIC4574-3.3BN has a total of five pins:

1. VIN: Input voltage pin.
2. GND: Ground reference pin.
3. EN: Enable pin for turning the regulator on/off.
4. FB: Feedback pin for setting the output voltage.
5. VOUT: Output voltage pin.

Functional Features

• High efficiency voltage regulation.
• Low dropout voltage.
• Thermal shutdown protection.
• Short circuit protection.
• Enable pin for power management.

Advantages and Disadvantages

Advantages

• Wide input voltage range.
• Stable and accurate output voltage.
• High ripple rejection.
• Built-in thermal shutdown and short circuit protection.
• Enable pin for power-saving functionality.

Disadvantages

• Dropout voltage may limit its use in low voltage applications.
• Higher quiescent current compared to some alternative models.

Working Principles

MIC4574-3.3BN is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the feedback voltage (FB pin) with a reference voltage, and adjusts the pass transistor accordingly to maintain a stable output voltage. The enable pin (EN) allows the regulator to be turned on or off as needed.

Detailed Application Field Plans

MIC4574-3.3BN finds applications in various electronic devices and systems, including but not limited to: - Power supplies for microcontrollers and digital circuits. - Battery-powered devices requiring stable voltage. - Automotive electronics. - Industrial control systems. - Communication equipment.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to MIC4574-3.3BN are: - LM1117-3.3: Similar specifications, TO-220 package. - LT1763-3.3: Lower dropout voltage, SOT-223 package. - TPS73633: Higher output current, SOT-23 package.

These alternative models provide similar functionality and can be used based on specific requirements and constraints.

In conclusion, MIC4574-3.3BN is a voltage regulator with a wide input voltage range, stable output voltage, and various protection features. It finds applications in diverse electronic systems and has alternative models available for different design considerations.