LM3702YABP-290

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - Low dropout voltage regulator - Adjustable output voltage - Low quiescent current - Thermal shutdown protection - Overcurrent and short-circuit protection

Package: TO-263-5L (D2PAK)

Essence: The LM3702YABP-290 is a power management IC that provides a regulated output voltage with low dropout. It is commonly used in various electronic devices to ensure stable power supply.

Packaging/Quantity: The LM3702YABP-290 is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 2.7V to 6.5V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 200mV at 500mA
• Quiescent Current: 45µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM3702YABP-290 has the following pin configuration:

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

Functional Features

• Low dropout voltage: The LM3702YABP-290 can regulate the output voltage even when the input voltage is close to the desired output voltage.
• Adjustable output voltage: The output voltage can be adjusted within a specified range using external resistors.
• Low quiescent current: The IC consumes very low current when in standby mode, minimizing power consumption.
• Thermal shutdown protection: The IC automatically shuts down if the temperature exceeds a certain threshold, preventing damage due to overheating.
• Overcurrent and short-circuit protection: The IC provides protection against excessive current flow and short circuits, ensuring the safety of the connected devices.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures stable output even with low input voltage. - Adjustable output voltage allows flexibility in various applications. - Low quiescent current minimizes power consumption. - Thermal shutdown and overcurrent/short-circuit protection enhance device safety.

Disadvantages: - Limited input voltage range (2.7V to 6.5V). - Dropout voltage may cause a slight decrease in efficiency.

Working Principles

The LM3702YABP-290 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 and maintain a constant output voltage. The enable pin (EN) controls the operation of the regulator.

Detailed Application Field Plans

The LM3702YABP-290 is widely used in various electronic devices, including but not limited to: - Battery-powered devices - Portable audio players - Mobile phones - Wireless communication systems - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

1. LM1117-3.3: Fixed output voltage regulator with a dropout voltage of 1.2V at 800mA.
2. LM317: Adjustable output voltage regulator with a dropout voltage of 1.25V at 1.5A.
3. LT1763: Low dropout voltage regulator with adjustable output voltage and low quiescent current.

These alternative models offer similar functionality and can be considered as substitutes for the LM3702YABP-290 depending on specific requirements.

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