MAX8840ELT27+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: Low Dropout Linear Regulator
• Package: 6-Pin Thin SOT23
• Essence: Voltage Regulator
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Input Voltage Range: 2.5V to 6.5V
• Output Voltage: 2.7V
• Maximum Output Current: 150mA
• Dropout Voltage: 120mV at 100mA
• Quiescent Current: 40µA
• Line Regulation: ±0.05%/V
• Load Regulation: ±0.1%/mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX8840ELT27+T has the following pin configuration:

1. GND (Ground): Connected to the ground reference of the system.
2. IN (Input): Connects to the input voltage source.
3. EN (Enable): Active-high enable pin to turn on/off the regulator.
4. BYP (Bypass): Connects a capacitor to improve transient response.
5. FB (Feedback): Connects to the feedback resistor divider network.
6. OUT (Output): Provides the regulated output voltage.

Functional Features

• Low dropout voltage for efficient power conversion.
• Low quiescent current for power-saving applications.
• Excellent line and load regulation for stable output voltage.
• Thermal shutdown protection to prevent overheating.
• Short-circuit current limit for fault protection.
• Enable pin for easy on/off control.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient power conversion. - Low quiescent current enables power-saving operation. - Excellent line and load regulation provide stable output voltage. - Thermal shutdown protection prevents overheating. - Short-circuit current limit offers fault protection.

Disadvantages: - Limited maximum output current of 150mA. - Input voltage range restricted to 2.5V to 6.5V.

Working Principles

The MAX8840ELT27+T is a low dropout linear regulator that regulates the input voltage to a fixed 2.7V output voltage. It achieves this by using a pass transistor and feedback control mechanism. The regulator operates in a dropout mode, allowing it to maintain regulation even when the input voltage is close to the desired output voltage. The enable pin provides easy on/off control, allowing the user to turn off the regulator when not needed, thus saving power.

Detailed Application Field Plans

The MAX8840ELT27+T is commonly used in various applications where a stable 2.7V power supply is required. Some typical application fields include:

1. Battery-Powered Devices: Portable electronics such as smartphones, tablets, and wearable devices often require a low dropout regulator to provide a stable voltage for their internal circuitry.

2. Industrial Control Systems: The regulator can be used in industrial control systems to power microcontrollers, sensors, and other low-power components.

3. Automotive Electronics: In automotive applications, the MAX8840ELT27+T can be utilized to regulate voltage for infotainment systems, dashboard displays, and other electronic modules.

4. IoT Devices: Internet of Things (IoT) devices often operate on low voltages and require efficient power management. This regulator can be employed in IoT devices like smart home sensors, environmental monitors, and wireless communication modules.

Detailed and Complete Alternative Models

1. MAX8840ELT28+T: Similar to MAX8840ELT27+T but with a fixed output voltage of 2.8V.
2. MAX8840ELT29+T: Similar to MAX8840ELT27+T but with a fixed output voltage of 2.9V.
3. MAX8840ELT30+T: Similar to MAX8840ELT27+T but with a fixed output voltage of 3.0V.

These alternative models provide different fixed output voltages to suit specific application requirements.

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