MIC4690YM

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: Low Dropout Voltage Regulator
• Package: 8-Pin SOIC (Small Outline Integrated Circuit)
• Essence: Regulates input voltage to a lower, stable output voltage
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.7V to 16V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 120mV at 150mA load current
• Quiescent Current: 75µA
• Output Current: Up to 150mA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The MIC4690YM has the following pin configuration:

1. GND (Ground)
2. IN (Input Voltage)
3. EN (Enable)
4. BYP (Bypass Capacitor)
5. FB (Feedback)
6. NC (No Connection)
7. VOUT (Output Voltage)
8. VOUT (Output Voltage)

Functional Features

• Low dropout voltage for efficient power conversion
• Stable output voltage with minimal fluctuations
• Enable pin for easy on/off control
• Bypass capacitor pin for improved noise performance
• Feedback pin for precise voltage regulation

Advantages

• Wide input voltage range allows for versatile applications
• Low quiescent current minimizes power consumption
• Small package size enables space-saving designs
• Excellent line and load regulation for reliable performance
• Thermal shutdown and current limit protection features enhance safety

Disadvantages

• Limited output current may not be suitable for high-power applications
• Requires an external bypass capacitor for optimal noise performance

Working Principles

The MIC4690YM is a low dropout voltage regulator that regulates the input voltage to a lower, stable output voltage. It achieves this by utilizing a pass transistor and feedback mechanism. The input voltage is supplied through the IN pin, and the regulated output voltage is obtained from the VOUT pin.

The enable (EN) pin allows for easy on/off control of the regulator. When the EN pin is high, the regulator is enabled and actively regulates the output voltage. Conversely, when the EN pin is low, the regulator is disabled, resulting in a high impedance state between the input and output pins.

The bypass capacitor (BYP) pin is used to improve noise performance by reducing high-frequency noise on the input voltage. Connecting an external capacitor between the BYP and GND pins helps filter out unwanted noise.

The feedback (FB) pin is responsible for precise voltage regulation. By comparing the output voltage with a reference voltage, the regulator adjusts its internal circuitry to maintain a stable output voltage, even under varying load conditions.

Detailed Application Field Plans

The MIC4690YM is commonly used in various applications where a stable, regulated power supply is required. Some typical application fields include:

1. Battery-powered devices: Portable electronics, handheld instruments, and battery-operated sensors benefit from the low dropout voltage and low quiescent current of the MIC4690YM.
2. Automotive electronics: The wide input voltage range and robust design make it suitable for automotive applications such as infotainment systems, lighting controls, and engine management systems.
3. Industrial equipment: The MIC4690YM can be used in industrial automation, control systems, and motor drives, providing reliable power regulation in harsh environments.
4. Communication systems: Wireless routers, base stations, and network switches can utilize the MIC4690YM for efficient power management and voltage regulation.

Detailed and Complete Alternative Models

• MIC4680YM: Similar specifications and features, but with a higher output current capability of up to 300mA.
• MIC4691YM: Offers adjustable output voltage through an external resistor, allowing for greater flexibility in voltage selection.
• MIC4685YM: Provides a fixed output voltage of 3.3V, suitable for applications requiring a specific voltage level.

These alternative models offer similar functionality and can be considered as alternatives to the MIC4690YM based on specific application requirements.

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