LM2642MTCX/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Wide input voltage range - Adjustable output voltage - Low quiescent current - Thermal shutdown protection

Package: SOT-23-6

Essence: The LM2642MTCX/NOPB is a voltage regulator IC designed to provide a regulated output voltage from a wide range of input voltages. It offers high efficiency and low quiescent current, making it suitable for various applications.

Packaging/Quantity: The LM2642MTCX/NOPB is available in a SOT-23-6 package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.8V to VIN
• Maximum Output Current: 1A
• Quiescent Current: 45µA (typical)
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM2642MTCX/NOPB has the following pin configuration:

```

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| | --| EN GND |-- --| FB SW |-- --| VIN VOUT |-- |___________| ```

• EN: Enable pin (Active High)
• GND: Ground pin
• FB: Feedback pin
• SW: Switch pin
• VIN: Input voltage pin
• VOUT: Output voltage pin

Functional Features

• Wide Input Voltage Range: The LM2642MTCX/NOPB can accept input voltages ranging from 2.7V to 5.5V, allowing it to be used with various power sources.
• Adjustable Output Voltage: The output voltage can be adjusted from 0.8V to the input voltage (VIN), providing flexibility in different applications.
• High Efficiency: With efficiency up to 95%, the LM2642MTCX/NOPB minimizes power loss and maximizes energy conversion.
• Low Quiescent Current: The IC has a low quiescent current of 45µA, reducing power consumption during standby or idle modes.
• Thermal Shutdown Protection: The LM2642MTCX/NOPB incorporates thermal shutdown protection, preventing damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows compatibility with various power sources. - Adjustable output voltage provides flexibility for different applications. - High efficiency minimizes power loss. - Low quiescent current reduces power consumption during standby. - Thermal shutdown protection prevents damage from overheating.

Disadvantages: - Limited maximum output current of 1A may not be sufficient for high-power applications. - SOT-23-6 package may require additional heat dissipation measures for certain operating conditions.

Working Principles

The LM2642MTCX/NOPB is a step-down voltage regulator that uses a switching converter topology. It operates by rapidly switching an internal power switch to control the output voltage. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle of the internal switch to maintain a stable output voltage within the desired range.

When the enable pin (EN) is high, the regulator is active and provides a regulated output voltage. When the enable pin is low, the regulator enters a low-power standby mode, reducing quiescent current consumption.

Detailed Application Field Plans

The LM2642MTCX/NOPB is suitable for a wide range of applications, including but not limited to: - Battery-powered devices - Portable electronics - IoT (Internet of Things) devices - Embedded systems - Industrial control systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LM2642MTCX/NOPB include: - LM2641: Similar voltage regulator IC with a different package option. - LM2678: Step-down voltage regulator with higher output current capability. - LM2596: Adjustable step-down voltage regulator with a wider input voltage range.

These alternative models can be considered based on specific requirements and compatibility with the application.