MAX8840ELT15+T

Product Overview

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

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage: 1.5V
• Maximum Output Current: 150mA
• Dropout Voltage: 120mV at 100mA
• Quiescent Current: 25µA
• Line Regulation: ±0.05%/V
• Load Regulation: ±0.3%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX8840ELT15+T has a 6-pin Thin SOT23 package with the following pin configuration:

1. GND (Ground): Connected to the ground reference of the circuit.
2. IN (Input): Connects to the input voltage source.
3. EN (Enable): Controls the enable/disable state of the regulator.
4. BYP (Bypass): Connects an external capacitor for stability.
5. FB (Feedback): Provides feedback for regulating the output voltage.
6. OUT (Output): Outputs the regulated voltage.

Functional Features

• Low dropout voltage allows efficient regulation even with low input voltages.
• Low quiescent current ensures minimal power consumption during standby or idle modes.
• Excellent line and load regulation provide stable output voltage under varying conditions.
• Thermal shutdown and current limit protection ensure safe operation.

Advantages and Disadvantages

Advantages: - Compact and space-saving package. - Wide input voltage range allows compatibility with various power sources. - Low dropout voltage enables efficient power conversion. - Low quiescent current minimizes power consumption.

Disadvantages: - Limited maximum output current may not be suitable for high-power applications. - Requires external bypass capacitor for stability.

Working Principles

The MAX8840ELT15+T is a voltage regulator IC that regulates the input voltage to a fixed 1.5V output voltage. It utilizes a low dropout architecture, allowing it to operate efficiently even when the input voltage is close to the desired output voltage. The feedback mechanism continuously monitors the output voltage and adjusts the internal circuitry to maintain a stable output. The enable pin allows the user to control the regulator's on/off state, conserving power when not needed. Thermal shutdown and current limit protection mechanisms ensure safe operation under abnormal conditions.

Detailed Application Field Plans

The MAX8840ELT15+T is commonly used in various battery-powered devices, such as portable electronics, wireless communication systems, and handheld instruments. Its low dropout voltage and low quiescent current make it ideal for applications where power efficiency and battery life are crucial. Some specific application fields include:

1. Mobile Phones: Power management for core components like processors, memory, and display modules.
2. Portable Media Players: Regulating power supply for audio/video processing and storage components.
3. Wearable Devices: Efficient power management for sensors, microcontrollers, and wireless connectivity modules.
4. IoT Devices: Voltage regulation for low-power sensors, actuators, and communication modules.
5. Medical Devices: Power supply control for portable medical instruments and monitoring devices.

Detailed and Complete Alternative Models

1. LM1117-1.5: A popular alternative with similar specifications and package options.
2. MCP1701-1502E/TO: Another low dropout voltage regulator with a wide input voltage range.
3. LP2985-1.5: Offers low quiescent current and excellent line/load regulation.
4. TPS73601DBVR: Provides a fixed 1.5V output with low dropout voltage and thermal shutdown protection.

These alternative models offer similar functionality and can be considered as replacements for the MAX8840ELT15+T in various applications.

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