MIC4681YM

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High Efficiency, Low Dropout Voltage, Adjustable Output Voltage
• Package: 8-Pin SOIC (Small Outline Integrated Circuit)
• Essence: The MIC4681YM is a voltage regulator IC designed to provide a stable output voltage from an input voltage source.
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Input Voltage Range: 2.7V to 16V
• Output Voltage Range: 1.25V to 13.5V
• Output Current: Up to 1A
• Dropout Voltage: 120mV at 500mA
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The MIC4681YM has the following pin configuration:

1. GND (Ground)
2. VIN (Input Voltage)
3. VOUT (Output Voltage)
4. ADJ (Adjustment Pin)
5. NC (No Connection)
6. NC (No Connection)
7. NC (No Connection)
8. EN (Enable)

Functional Features

• High Efficiency: The MIC4681YM utilizes advanced circuitry to achieve high efficiency, minimizing power loss and maximizing battery life.
• Low Dropout Voltage: The regulator maintains a low dropout voltage, ensuring stable output voltage even when the input voltage is close to the desired output voltage.
• Adjustable Output Voltage: The output voltage can be adjusted using an external resistor connected to the ADJ pin, allowing flexibility in various applications.
• Enable Pin: The EN pin provides control over the regulator's operation, allowing it to be turned on or off as needed.

Advantages and Disadvantages

Advantages: - High efficiency design - Low dropout voltage - Adjustable output voltage - Enable pin for control

Disadvantages: - Limited output current (up to 1A) - Requires an external resistor for output voltage adjustment

Working Principles

The MIC4681YM is a linear voltage regulator that operates by comparing the output voltage with a reference voltage. It adjusts the pass transistor's resistance to maintain a stable output voltage, regardless of changes in the input voltage or load conditions. The enable pin allows the regulator to be turned on or off, conserving power when not needed.

Detailed Application Field Plans

The MIC4681YM is suitable for a wide range of applications, including but not limited to:

1. Battery-powered devices: Provides a stable voltage supply for portable electronics such as smartphones, tablets, and wearable devices.
2. Industrial equipment: Ensures consistent power delivery for various industrial control systems and sensors.
3. Automotive electronics: Regulates voltage for automotive components like infotainment systems, lighting modules, and engine control units.
4. Communication systems: Maintains a reliable voltage source for routers, switches, and other network equipment.
5. Medical devices: Offers precise voltage regulation for medical instruments and diagnostic equipment.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable voltage regulator with a wide input voltage range and adjustable output voltage.
2. LT1086: A low dropout voltage regulator capable of delivering higher output currents.
3. LM1117: A fixed output voltage regulator available in various voltage options.
4. MAX603: An ultra-low quiescent current voltage regulator suitable for battery-powered applications.
5. TPS7A47: A high-performance voltage regulator with low noise and excellent line and load regulation.

These alternative models provide similar functionality to the MIC4681YM and can be considered as alternatives based on specific application requirements.

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