LM3704XDMMX-463

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - Low dropout voltage regulator - High output current capability - Wide input voltage range - Adjustable output voltage - Thermal shutdown protection - Short-circuit current limit

Package: DMMX-463 (Surface Mount Package)

Essence: The LM3704XDMMX-463 is a power management integrated circuit designed to regulate the output voltage of a power supply. It provides a stable and reliable voltage output, making it suitable for various electronic devices.

Packaging/Quantity: The LM3704XDMMX-463 is available in a surface mount package, which ensures easy installation on printed circuit boards. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 2.5V - 6.0V
• Output Voltage Range: 1.2V - 5.5V
• Dropout Voltage: 200mV at 500mA
• Output Current: Up to 1A
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM3704XDMMX-463 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 adjusting the output voltage
5. VOUT: Output voltage pin

Functional Features

• Low Dropout Voltage: The LM3704XDMMX-463 exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• High Output Current Capability: With a maximum output current of 1A, this IC can power a wide range of electronic devices.
• Wide Input Voltage Range: The LM3704XDMMX-463 can accept input voltages ranging from 2.5V to 6.0V, making it compatible with various power sources.
• Adjustable Output Voltage: The output voltage can be adjusted within the range of 1.2V to 5.5V, providing flexibility for different applications.
• Thermal Shutdown Protection: The IC incorporates thermal shutdown protection, which prevents damage due to excessive temperature.
• Short-Circuit Current Limit: It features a short-circuit current limit to protect the circuitry in case of a fault.

Advantages and Disadvantages

Advantages: - High output current capability - Wide input voltage range - Adjustable output voltage - Thermal shutdown protection - Short-circuit current limit

Disadvantages: - Dropout voltage may affect efficiency in certain applications - Limited output voltage range compared to some other models

Working Principles

The LM3704XDMMX-463 is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It compares the feedback voltage (FB) with a reference voltage to adjust the pass transistor's resistance, maintaining a stable output voltage. When the enable pin (EN) is high, the regulator operates, and when it is low, the regulator enters a low-power shutdown mode.

Detailed Application Field Plans

The LM3704XDMMX-463 finds applications in various electronic devices, including but not limited to: - Mobile phones - Portable media players - Digital cameras - Wireless communication devices - Battery-powered devices

Detailed and Complete Alternative Models

Some alternative models to the LM3704XDMMX-463 include: - LM317: Adjustable voltage regulator with higher output current capability - LM1117: Fixed voltage regulator with lower dropout voltage - LT1083: Adjustable voltage regulator with higher output current capability and wider input voltage range

These alternative models offer different features and specifications, allowing designers to choose the most suitable option for their specific requirements.

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