MAX1928EUB25+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: The MAX1928EUB25+ is a voltage regulator IC designed for use in various electronic devices. It provides a stable output voltage to power different components within a circuit.

Characteristics: - Input Voltage Range: 2.7V to 5.5V - Output Voltage: 2.5V - Maximum Output Current: 150mA - Low Dropout Voltage: 120mV at 100mA - Low Quiescent Current: 40µA - High PSRR (Power Supply Rejection Ratio): 70dB at 1kHz - Thermal Shutdown Protection

Package: The MAX1928EUB25+ is available in a small SOT23-5 package, which is compact and suitable for space-constrained applications.

Essence: This voltage regulator IC ensures a stable and reliable power supply for electronic circuits, preventing voltage fluctuations that could potentially damage sensitive components.

Packaging/Quantity: The MAX1928EUB25+ is typically sold in reels of 3000 units.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage: 2.5V
• Output Current: Up to 150mA
• Dropout Voltage: 120mV at 100mA
• Quiescent Current: 40µA
• PSRR: 70dB at 1kHz
• Operating Temperature Range: -40°C to +85°C
• Package Type: SOT23-5

Pin Configuration

The MAX1928EUB25+ has the following pin configuration:

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1. VIN: Input Voltage
2. GND: Ground
3. FB: Feedback Pin
4. EN: Enable Pin
5. VOUT: Output Voltage

Functional Features

• Stable Output Voltage: The MAX1928EUB25+ provides a constant output voltage of 2.5V, ensuring reliable operation of connected components.
• Low Dropout Voltage: With a dropout voltage as low as 120mV at 100mA, this IC can maintain a stable output even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: The quiescent current of only 40µA minimizes power consumption and extends battery life in portable devices.
• High PSRR: The high Power Supply Rejection Ratio of 70dB at 1kHz ensures that any fluctuations or noise in the input voltage are effectively rejected, resulting in a clean and stable output.
• Thermal Shutdown Protection: The IC incorporates thermal shutdown protection, which prevents overheating and potential damage to the device.

Advantages and Disadvantages

Advantages: - Compact package suitable for space-constrained applications - Low dropout voltage ensures stable output even with low input voltages - Low quiescent current for reduced power consumption - High PSRR rejects input voltage fluctuations and noise - Thermal shutdown protection prevents overheating

Disadvantages: - Limited maximum output current (150mA)

Working Principles

The MAX1928EUB25+ operates as a linear voltage regulator. It takes an input voltage within the range of 2.7V to 5.5V and regulates it to a stable output voltage of 2.5V. The feedback pin (FB) compares the output voltage with a reference voltage and adjusts the internal circuitry to maintain the desired output voltage. The enable pin (EN) allows the user to control the regulator's operation by enabling or disabling it.

Detailed Application Field Plans

The MAX1928EUB25+ is widely used in various electronic devices that require a stable 2.5V power supply. Some common application fields include:

1. Mobile Devices: Smartphones, tablets, and portable media players often utilize this voltage regulator IC to power different components such as microprocessors, memory chips, and display panels.
2. IoT Devices: Internet of Things (IoT) devices, including sensors, wearables, and connected appliances, benefit from the stable power supply provided by the MAX1928EUB25+.
3. Embedded Systems: The IC finds applications in embedded systems, where it powers microcontrollers, communication modules, and other peripherals.
4. Automotive Electronics: The MAX1928EUB25+ can be used in automotive electronics for powering various components, such as infotainment systems, navigation units, and control modules.

Detailed and Complete Alternative Models

• MAX1928EUB30+: Similar to the MAX1928EUB25+, but with an output voltage