ISL8845AABZ

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Wide input voltage range - Adjustable output voltage - Current limit protection - Over-temperature protection

Package: TO-263-7 (D2PAK)

Essence: The ISL8845AABZ is a voltage regulator IC designed for high-efficiency power conversion applications.

Packaging/Quantity: The ISL8845AABZ is available in a TO-263-7 package and is typically sold in reels of 250 units.

Specifications

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 0.8V to 24V
• Maximum Output Current: 6A
• Switching Frequency: 200kHz to 1MHz
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The ISL8845AABZ has the following pin configuration:

```

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| | --| VIN GND |-- Pin 1: Ground --| VCC SW |-- Pin 2: Switching Node --| FB COMP|-- Pin 3: Feedback and Compensation --| CS SS |-- Pin 4: Current Sense and Soft Start --| EN RT |-- Pin 5: Enable and External Resistor Timing --| PGND VOUT|-- Pin 6: Power Ground and Output Voltage --| NC |-- Pin 7: No Connection |___________| ```

Functional Features

• Wide input voltage range allows for versatile applications.
• Adjustable output voltage provides flexibility in power supply design.
• Current limit protection prevents damage due to excessive current.
• Over-temperature protection ensures safe operation under high temperature conditions.

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings. - Wide input voltage range allows for compatibility with various power sources. - Adjustable output voltage provides customization options. - Current limit protection enhances system reliability. - Over-temperature protection prevents thermal damage.

Disadvantages: - Limited maximum output current may not be suitable for high-power applications. - Switching frequency range may not be optimal for all designs.

Working Principles

The ISL8845AABZ operates as a pulse-width modulation (PWM) voltage regulator. It uses a feedback mechanism to regulate the output voltage based on the desired setpoint. The switching frequency is controlled by an internal oscillator, which determines how often the power switch turns on and off. By adjusting the duty cycle of the switch, the average output voltage can be regulated.

Detailed Application Field Plans

The ISL8845AABZ is commonly used in the following applications:

1. Power supplies for computer systems
2. Industrial automation equipment
3. Telecommunications infrastructure
4. LED lighting systems
5. Automotive electronics

Detailed and Complete Alternative Models

1. ISL8845AAHZ: Similar to ISL8845AABZ but available in a smaller package (SOIC-8).
2. ISL8845AIBZ: Similar to ISL8845AABZ but with a higher maximum output current (8A).
3. ISL8845EVAL1Z: Evaluation board for testing and prototyping with the ISL8845AABZ.

These alternative models offer similar functionality and can be considered as substitutes depending on specific requirements.

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