LM3704XDMM-463/NOPB

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 - Low quiescent current

Package: DMM-463 (8-Lead VSSOP)

Essence: The LM3704XDMM-463/NOPB is a power management integrated circuit designed to regulate the output voltage of a power supply. It offers low dropout voltage, high output current capability, and a wide input voltage range.

Packaging/Quantity: The LM3704XDMM-463/NOPB is available in a DMM-463 package, which contains 8 leads. The quantity per package may vary depending on the supplier.

Specifications

• Input Voltage Range: 2.5V to 6.5V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 200mV at 300mA
• Output Current: Up to 500mA
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM3704XDMM-463/NOPB has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. EN: Enable pin
4. BYP: Bypass capacitor pin
5. FB: Feedback pin
6. VOUT: Output voltage pin
7. NC: No connection
8. NC: No connection

Functional Features

• Low dropout voltage: The LM3704XDMM-463/NOPB maintains a low dropout voltage, ensuring efficient power regulation even when the input voltage is close to the output voltage.
• High output current capability: With a maximum output current of 500mA, this IC can handle demanding power requirements.
• Wide input voltage range: The LM3704XDMM-463/NOPB accepts input voltages ranging from 2.5V to 6.5V, making it suitable for various applications.
• Adjustable output voltage: The output voltage can be adjusted within the range of 1.2V to 5.5V, providing flexibility for different system requirements.
• Thermal shutdown protection: The IC includes thermal shutdown protection, which prevents damage due to excessive temperature.
• Short-circuit current limit: It incorporates a short-circuit current limit feature that protects the IC and connected components in case of a short circuit.
• Low quiescent current: The LM3704XDMM-463/NOPB has a low quiescent current of 75µA, minimizing power consumption during standby or idle modes.

Advantages and Disadvantages

Advantages: - Efficient power regulation - High output current capability - Wide input voltage range - Adjustable output voltage - Thermal shutdown protection - Short-circuit current limit - Low quiescent current

Disadvantages: - Limited to 8-Lead VSSOP package option - Not suitable for high-power applications

Working Principles

The LM3704XDMM-463/NOPB operates as a low dropout voltage regulator. It regulates the output voltage by maintaining a small voltage difference between the input and output terminals. This allows the IC to provide a stable output voltage even when the input voltage fluctuates.

The feedback pin (FB) is used to adjust the output voltage. By connecting an external resistor divider network to the FB pin, the desired output voltage can be set within the specified range.

The enable pin (EN) controls the operation of the IC. When EN is high, the regulator is enabled and actively regulates the output voltage. Conversely, when EN is low, the regulator enters a low-power standby mode.

Detailed Application Field Plans

The LM3704XDMM-463/NOPB can be used in various applications that require efficient power management and voltage regulation. Some potential application fields include:

1. Battery-powered devices: The low dropout voltage and wide input voltage range make it suitable for battery-powered devices such as smartphones, tablets, portable media players, and handheld gaming consoles.
2. Industrial equipment: It can be used in industrial equipment that requires stable and regulated power supply, such as sensors, actuators, and control systems.
3. Automotive electronics: The IC's wide operating temperature range and thermal shutdown protection make it suitable for automotive applications, including infotainment systems, lighting control, and engine management systems.
4. IoT devices: With its low quiescent current and compact package, the LM3704XDMM-463/NOPB is ideal for powering IoT devices like smart home sensors, wearables, and wireless communication modules.