ISL9440IRZ

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

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

Package: IRZ package

Essence: The ISL9440IRZ is a voltage regulator IC designed for various applications that require stable and regulated power supply.

Packaging/Quantity: The ISL9440IRZ is available in a standard IRZ package. It is typically sold in reels or tubes containing multiple units.

Specifications

The ISL9440IRZ has the following specifications:

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.8V to VIN
• Maximum Output Current: 1A
• Dropout Voltage: 200mV at 1A
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The ISL9440IRZ has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. EN: Enable pin
4. FB: Feedback pin
5. VOUT: Output voltage pin

Functional Features

• High Efficiency: The ISL9440IRZ offers high efficiency, minimizing power loss and maximizing battery life.
• Low Dropout Voltage: With a low dropout voltage of 200mV at 1A, 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 operate within a wide input voltage range of 2.7V to 5.5V, making it suitable for various applications.
• Overcurrent and Thermal Protection: The ISL9440IRZ incorporates overcurrent and thermal protection mechanisms to safeguard the IC and connected devices from damage.
• Adjustable Output Voltage: The output voltage can be adjusted within a range of 0.8V to VIN, providing flexibility for different application requirements.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption - Wide input voltage range allows for versatile applications - Overcurrent and thermal protection ensure device safety - Adjustable output voltage provides flexibility

Disadvantages: - Limited maximum output current (1A) - Dropout voltage may affect performance in low input voltage scenarios

Working Principles

The ISL9440IRZ operates as a linear voltage regulator. It regulates the output voltage by adjusting the resistance between the input and output pins based on the feedback received from the FB pin. This feedback loop ensures that the output voltage remains stable and within the desired range, even when the input voltage or load conditions change.

Detailed Application Field Plans

The ISL9440IRZ is commonly used in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable consumer electronics - IoT devices - Automotive applications - Industrial equipment

Detailed and Complete Alternative Models

Some alternative models to the ISL9440IRZ include: - LM317: A popular adjustable linear voltage regulator with similar characteristics and functionality. - LT1084: A high-current, adjustable linear voltage regulator suitable for demanding applications. - TPS7A47: An ultra-low dropout voltage regulator with high accuracy and low noise.

These alternative models offer similar features and can be considered depending on specific application requirements.

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