IRU1261CPTR

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Adjustable output voltage - Thermal shutdown protection - Short circuit current limit

Package: 8-pin Thin Small Outline Package (TSOP)

Essence: The IRU1261CPTR is a voltage regulator IC designed to provide a stable output voltage for various electronic devices.

Packaging/Quantity: The IRU1261CPTR is typically sold in reels containing 2500 units.

Specifications

• Input Voltage Range: 2.5V - 7V
• Output Voltage Range: 1.25V - 5.5V
• Dropout Voltage: 300mV @ 1A
• Output Current: Up to 1.5A
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The IRU1261CPTR has the following pin configuration:

```

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| | --| Vout Vin|-- --| GND EN |-- --| FB NC |-- |___________| ```

• Vout: Output Voltage
• Vin: Input Voltage
• GND: Ground
• EN: Enable Pin
• FB: Feedback Pin
• NC: No Connection

Functional Features

• Low Dropout Voltage: The IRU1261CPTR has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• High Output Current Capability: With a maximum output current of 1.5A, this voltage regulator can power a wide range of electronic devices.
• Adjustable Output Voltage: The output voltage can be adjusted within the range of 1.25V to 5.5V, providing flexibility for different applications.
• Thermal Shutdown Protection: The IC includes a thermal shutdown feature that protects it from overheating, ensuring reliable operation.
• Short Circuit Current Limit: In case of a short circuit, the IRU1261CPTR limits the current to prevent damage to the device.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation - High output current capability for powering various devices - Adjustable output voltage provides versatility - Thermal shutdown protection enhances reliability - Short circuit current limit protects the IC

Disadvantages: - Limited input voltage range (2.5V - 7V) - Quiescent current of 120µA may affect battery life in low-power applications

Working Principles

The IRU1261CPTR operates as a linear voltage regulator. It uses a pass transistor to regulate the output voltage based on the feedback received from the FB pin. The enable pin (EN) controls the operation of the IC. When enabled, the IC regulates the output voltage according to the desired value set by external resistors connected to the FB pin.

Detailed Application Field Plans

The IRU1261CPTR is commonly used in various electronic devices and systems, including: - Power supplies for microcontrollers and other digital circuits - Battery-powered devices requiring stable voltage levels - Automotive electronics - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the IRU1261CPTR include: - LM1117-ADJ - LT1084CP-ADJ - TPS7A4700-ADJ - ADP3339-ADJ - MAX603-ADJ

These alternatives provide comparable voltage regulation capabilities and can be used as substitutes depending on specific requirements.

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