LM27952SD/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High efficiency voltage regulator - Low dropout voltage - Adjustable output voltage - Overcurrent and thermal protection - Small package size

Package: DFN (Dual Flat No-Lead) Package

Essence: LM27952SD/NOPB is a power management IC designed to regulate voltage efficiently with low dropout voltage. It provides adjustable output voltage, overcurrent protection, and thermal protection in a small DFN package.

Packaging/Quantity: The LM27952SD/NOPB is typically sold in reels containing 2500 units per reel.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.8V to VIN
• Dropout Voltage: 200mV at 150mA Load Current
• Maximum Output Current: 500mA
• Quiescent Current: 45µA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM27952SD/NOPB has the following pin configuration:

1. EN (Enable): Enable input pin for turning the device on/off.
2. GND (Ground): Ground reference pin.
3. FB (Feedback): Feedback pin for adjusting the output voltage.
4. VIN (Input Voltage): Input voltage supply pin.
5. VOUT (Output Voltage): Output voltage pin.

Functional Features

• High Efficiency: The LM27952SD/NOPB offers high efficiency voltage regulation, minimizing power loss.
• Adjustable Output Voltage: The feedback pin allows users to adjust the output voltage according to their requirements.
• Overcurrent Protection: The IC incorporates overcurrent protection to prevent damage due to excessive current flow.
• Thermal Protection: The device includes thermal protection to safeguard against overheating.

Advantages and Disadvantages

Advantages: - High efficiency voltage regulation - Adjustable output voltage - Overcurrent and thermal protection - Small package size for space-constrained applications

Disadvantages: - Maximum output current limited to 500mA

Working Principles

The LM27952SD/NOPB operates as a voltage regulator by comparing the feedback voltage with a reference voltage. It adjusts the pass transistor's resistance to maintain the desired output voltage, compensating for load variations and input voltage changes. The device continuously monitors the output current and temperature to provide overcurrent and thermal protection.

Detailed Application Field Plans

The LM27952SD/NOPB is suitable for various applications, including but not limited to: - Battery-powered devices - Portable electronics - IoT (Internet of Things) devices - Wearable devices - Embedded systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LM27952SD/NOPB are: - LM1117-ADJ - LT1763-ADJ - TPS79650-ADJ - MCP1700-ADJ

These alternatives can be considered based on specific requirements and availability.

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