MAX890LESA+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuits (ICs)

Use: The MAX890LESA+ is a voltage regulator IC that provides a stable output voltage for various electronic devices. It is commonly used in power management applications.

Characteristics: - High efficiency - Low dropout voltage - Wide input voltage range - Overcurrent and thermal protection - Adjustable output voltage

Package: The MAX890LESA+ is available in a small surface-mount package, which makes it suitable for compact electronic devices.

Essence: This voltage regulator IC ensures a reliable and steady power supply to the connected electronic components, preventing damage due to voltage fluctuations.

Packaging/Quantity: The MAX890LESA+ is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 2.5V to 6.5V
• Output Voltage Range: 1.2V to 5.5V
• Maximum Output Current: 500mA
• Dropout Voltage: 120mV at 100mA
• Quiescent Current: 40µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX890LESA+ has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. EN: Enable pin (active high)
4. FB: Feedback pin for output voltage regulation
5. VOUT: Output voltage pin

Functional Features

• High Efficiency: The MAX890LESA+ offers high efficiency, minimizing power loss during voltage regulation.
• Overcurrent and Thermal Protection: It incorporates overcurrent and thermal protection mechanisms to safeguard the IC and connected devices.
• Adjustable Output Voltage: The output voltage can be adjusted within the specified range to meet the requirements of different applications.
• Wide Input Voltage Range: It accepts a wide range of input voltages, making it versatile for various power supply scenarios.

Advantages and Disadvantages

Advantages: - High efficiency ensures optimal power utilization. - Overcurrent and thermal protection enhance device reliability. - Adjustable output voltage allows flexibility in design. - Wide input voltage range accommodates diverse power sources.

Disadvantages: - Limited maximum output current may not be suitable for high-power applications. - Dropout voltage may cause a slight voltage drop across the regulator.

Working Principles

The MAX890LESA+ operates as a linear voltage regulator. It uses a feedback mechanism to compare the output voltage with a reference voltage and adjusts the internal circuitry to maintain a stable output voltage. The input voltage is regulated to provide a constant output voltage, even when the input voltage varies.

Detailed Application Field Plans

The MAX890LESA+ finds applications in various electronic devices that require a stable power supply. Some common application fields include: - Mobile phones - Portable media players - Digital cameras - Handheld gaming consoles - Wearable devices

Detailed and Complete Alternative Models

1. LM317T: A popular adjustable voltage regulator IC with similar characteristics and package options.
2. LT1763: Low dropout voltage regulator IC suitable for low-power applications.
3. TPS7A4700: High-current, low-dropout voltage regulator IC designed for demanding power management applications.

These alternative models offer similar functionality and can be considered as substitutes for the MAX890LESA+ based on specific requirements.

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