LM26420YSQ/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Low dropout voltage - Wide input voltage range - Adjustable output voltage - Overcurrent and thermal protection

Package: SOT-23-5

Essence: LM26420YSQ/NOPB is a voltage regulator IC designed to provide a stable output voltage from a varying input voltage source.

Packaging/Quantity: The LM26420YSQ/NOPB is available in a SOT-23-5 package. It is typically sold in reels containing 3000 units.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.8V to VIN
• Maximum Output Current: 1A
• Dropout Voltage: 200mV at 500mA
• Quiescent Current: 45µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM26420YSQ/NOPB has the following pin configuration:

```

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

• EN: Enable pin
• GND: Ground pin
• FB: Feedback pin
• VIN: Input voltage pin
• VOUT: Output voltage pin
• NC: No connection
• PG: Power good indicator pin
• SW: Switching pin

Functional Features

• High Efficiency: The LM26420YSQ/NOPB offers high efficiency, minimizing power loss during voltage regulation.
• Low Dropout Voltage: With a low dropout voltage of 200mV at 500mA, the IC 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 2.7V to 5.5V, making it suitable for various applications.
• Adjustable Output Voltage: The output voltage can be adjusted within the range of 0.8V to VIN, providing flexibility in different scenarios.
• Overcurrent and Thermal Protection: The LM26420YSQ/NOPB incorporates overcurrent and thermal protection mechanisms to safeguard the circuit and prevent damage.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption. - Wide input voltage range allows for compatibility with different power sources. - Adjustable output voltage provides versatility in application. - Overcurrent and thermal protection ensure the safety and reliability of the circuit.

Disadvantages: - Limited maximum output current of 1A may not be sufficient for high-power applications. - SOT-23-5 package may require additional space on the PCB compared to smaller packages.

Working Principles

The LM26420YSQ/NOPB operates as a step-down voltage regulator. It uses a switching mechanism to convert the higher input voltage to a lower, regulated output voltage. The feedback pin (FB) monitors the output voltage and adjusts the switching frequency accordingly to maintain a stable output. The enable pin (EN) controls the operation of the regulator, allowing it to be turned on or off as needed.

Detailed Application Field Plans

The LM26420YSQ/NOPB can be used in various applications, including but not limited to: - Battery-powered devices - Portable electronics - IoT devices - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LM26420YSQ/NOPB include: - LM2678-ADJ - TPS54331-Q1 - LT1763-3.3

These models have comparable specifications and can be considered as alternatives based on specific application requirements.

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