LM20123MHE/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Low dropout voltage - Wide input voltage range - Adjustable output voltage - Current limit protection - Thermal shutdown protection

Package: Housed in a small outline package (SOP)

Essence: The LM20123MHE/NOPB is a voltage regulator IC designed for various applications that require a stable and adjustable output voltage.

Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel.

Specifications

• Input Voltage Range: 4.5V to 20V
• Output Voltage Range: 0.8V to 6V
• Maximum Output Current: 1A
• Dropout Voltage: 300mV at 1A
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM20123MHE/NOPB has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for adjusting the output voltage
4. EN: Enable pin for turning the regulator on/off
5. VOUT: Output voltage pin

Functional Features

• High Efficiency: The LM20123MHE/NOPB offers high efficiency, minimizing power loss during voltage regulation.
• Low Dropout Voltage: With a low dropout voltage of 300mV at 1A, the regulator can maintain a stable output even when the input voltage is close to the desired output voltage.
• Wide Input Voltage Range: The IC can accept input voltages ranging from 4.5V to 20V, making it suitable for a wide range of applications.
• Adjustable Output Voltage: The output voltage can be adjusted from 0.8V to 6V, providing flexibility for different requirements.
• Current Limit Protection: The LM20123MHE/NOPB incorporates current limit protection, preventing excessive current flow and protecting the circuitry.
• Thermal Shutdown Protection: In case of excessive temperature rise, the regulator automatically shuts down to prevent damage.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption. - Wide input voltage range allows for versatile applications. - Adjustable output voltage provides flexibility. - Current limit and thermal shutdown protection enhance reliability.

Disadvantages: - Limited maximum output current of 1A may not be suitable for high-power applications. - Dropout voltage of 300mV may affect performance in low voltage scenarios.

Working Principles

The LM20123MHE/NOPB operates as a linear voltage regulator. It regulates the output voltage by comparing the feedback voltage (FB pin) with a reference voltage. By adjusting the resistance connected to the FB pin, the output voltage can be set to the desired level. The regulator maintains a stable output voltage by continuously monitoring the input voltage and adjusting the internal circuitry accordingly.

Detailed Application Field Plans

The LM20123MHE/NOPB is commonly used in various applications, including but not limited to: - Battery-powered devices - Portable electronics - Industrial control systems - Automotive electronics - Communication equipment

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LM20123MHE/NOPB include: - LM317: Adjustable voltage regulator with higher output current capability. - LM1117: Fixed voltage regulator with low dropout voltage. - LT1083: High-current adjustable voltage regulator with low dropout voltage.

These alternative models can be considered based on specific application requirements and desired features.

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