MIC3172BM

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High-performance, low-dropout linear regulator
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Regulates input voltage to a desired output voltage level
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.7V to 16V
• Output Voltage Range: 1.25V to 13.5V
• Dropout Voltage: 300mV at 500mA
• Output Current: Up to 500mA
• Line Regulation: 0.02% typical
• Load Regulation: 0.04% typical
• Quiescent Current: 75µA typical
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The MIC3172BM has a standard 8-pin SOIC package with the following pin configuration:

1. VOUT: Output Voltage
2. GND: Ground
3. ADJ: Adjustable Pin for Output Voltage Setting
4. BYP: Bypass Capacitor Connection
5. VIN: Input Voltage
6. NC: No Connection
7. NC: No Connection
8. NC: No Connection

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output differentials.
• Excellent line and load regulation characteristics provide stable output voltage under varying conditions.
• Adjustable output voltage allows customization according to specific requirements.
• Built-in thermal shutdown protection prevents damage due to excessive temperature.
• Short-circuit current limiting protects the device and connected components from overcurrent situations.

Advantages

• High-performance voltage regulation with low dropout voltage.
• Wide input voltage range enables versatile applications.
• Compact SOIC package facilitates easy integration into various circuit designs.
• Adjustable output voltage provides flexibility for different system requirements.
• Robust thermal protection ensures reliable operation under challenging conditions.

Disadvantages

• Limited output current capacity may not be suitable for high-power applications.
• Non-standard pin configuration may require additional attention during circuit layout.

Working Principles

The MIC3172BM is a linear voltage regulator that utilizes a pass transistor to regulate the input voltage to a desired output voltage level. It operates by comparing the output voltage with a reference voltage and adjusting the pass transistor accordingly. The dropout voltage is minimized, allowing efficient regulation even when the input voltage is close to the desired output voltage.

Detailed Application Field Plans

The MIC3172BM finds extensive use in various electronic systems requiring stable and regulated power supply. Some of the common application fields include:

1. Battery-powered devices: Portable electronics such as smartphones, tablets, and wearable devices benefit from the low dropout voltage and adjustable output voltage feature of the MIC3172BM.
2. Automotive electronics: The regulator's wide input voltage range and thermal protection make it suitable for automotive applications, including infotainment systems, lighting controls, and sensor circuits.
3. Industrial control systems: The device's excellent line and load regulation characteristics ensure stable power supply to microcontrollers, sensors, and other critical components in industrial automation and control systems.
4. Communication equipment: The MIC3172BM can be used in routers, switches, and other networking devices to provide reliable and regulated power to sensitive circuitry.

Detailed and Complete Alternative Models

1. LM317: A widely used adjustable linear voltage regulator with similar specifications and pin configuration.
2. LT1763: Low dropout linear regulator with higher output current capability and improved line/load regulation.
3. TPS7A47: Ultra-low dropout voltage regulator with enhanced thermal performance and higher output current rating.

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

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