LM2687MM/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Low dropout voltage - Adjustable output voltage - Overcurrent protection - Thermal shutdown protection

Package: 8-Pin SOIC (Small Outline Integrated Circuit)

Essence: The LM2687MM/NOPB is a voltage regulator IC that provides a stable output voltage for various electronic devices.

Packaging/Quantity: The LM2687MM/NOPB is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 1.2V to 3.6V
• Maximum Output Current: 500mA
• Dropout Voltage: 200mV at 100mA
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM2687MM/NOPB has the following pin configuration:

1. EN (Enable): Enable pin for turning the regulator on/off.
2. GND (Ground): Ground reference for the IC.
3. FB (Feedback): Connects to an external resistor divider network to set the output voltage.
4. VOUT (Output Voltage): Provides the regulated output voltage.
5. VIN (Input Voltage): Accepts the input voltage to be regulated.
6. BYP (Bypass): Connects to an external capacitor for stability and noise reduction.
7. NC (No Connection): Not internally connected, can be left unconnected.
8. PG (Power Good): Indicates when the output voltage is within regulation limits.

Functional Features

• High Efficiency: The LM2687MM/NOPB utilizes a synchronous buck regulator architecture, resulting in high efficiency and reduced power dissipation.
• Adjustable Output Voltage: The output voltage can be easily adjusted using an external resistor divider network connected to the FB pin.
• Overcurrent Protection: The IC incorporates overcurrent protection, which shuts down the regulator in case of excessive load current.
• Thermal Shutdown Protection: To prevent overheating, the LM2687MM/NOPB includes a thermal shutdown feature that disables the regulator when the temperature exceeds a safe limit.

Advantages and Disadvantages

Advantages: - High efficiency operation - Wide input voltage range - Adjustable output voltage - Overcurrent and thermal protection

Disadvantages: - Limited maximum output current (500mA) - Requires external components for proper operation

Working Principles

The LM2687MM/NOPB operates as a synchronous buck regulator. It takes an input voltage within the specified range and converts it to a regulated output voltage. The feedback pin (FB) is used to set the desired output voltage by connecting an external resistor divider network. The IC continuously monitors the output voltage and adjusts the duty cycle of the internal switches to maintain a stable output.

Detailed Application Field Plans

The LM2687MM/NOPB is commonly used in various applications, including: 1. Battery-powered devices 2. Portable electronic devices 3. IoT (Internet of Things) devices 4. Low-power microcontrollers 5. Wireless communication modules

Detailed and Complete Alternative Models

Some alternative models to the LM2687MM/NOPB include: - LM2678-ADJ - LM2776SDX - TPS54331-Q1 - MAX16910

These models offer similar functionality and can be considered as alternatives depending on specific requirements and availability.

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