ISL6551IR

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Low power consumption - Wide input voltage range - Adjustable output voltage - Overcurrent protection - Thermal shutdown protection

Package: SOIC (Small Outline Integrated Circuit)

Essence: The ISL6551IR is a voltage regulator IC designed for various applications that require stable and regulated power supply.

Packaging/Quantity: The ISL6551IR is available in a standard SOIC package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 0.8V to 5.5V
• Output Current: Up to 10A
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The ISL6551IR has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for output voltage regulation
4. COMP: Compensation pin for stability control
5. EN: Enable pin for turning the regulator on/off
6. SS: Soft-start pin for gradual startup
7. PG: Power Good pin indicating proper output voltage
8. VOUT: Output voltage pin

Functional Features

• High Efficiency: The ISL6551IR utilizes advanced circuitry to achieve high efficiency, minimizing power losses.
• Overcurrent Protection: The IC incorporates overcurrent protection to safeguard against excessive current flow.
• Thermal Shutdown Protection: In case of overheating, the ISL6551IR automatically shuts down to prevent damage.
• Adjustable Output Voltage: The output voltage can be easily adjusted within the specified range to meet specific requirements.

Advantages and Disadvantages

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

Disadvantages: - Limited output current capacity compared to some other voltage regulators. - Requires external components for proper operation.

Working Principles

The ISL6551IR operates as a step-down voltage regulator. It takes an input voltage from the VIN pin, regulates it, and provides a stable output voltage at the VOUT pin. The feedback (FB) pin monitors the output voltage and adjusts the internal circuitry to maintain the desired voltage level. The COMP pin is used for stability control, ensuring proper regulation. The EN pin enables or disables the regulator, while the SS pin allows for a soft-start feature. The PG pin indicates when the output voltage is within the acceptable range.

Detailed Application Field Plans

The ISL6551IR can be used in various applications that require regulated power supply, such as: - Computer motherboards - Industrial equipment - Telecommunications devices - Automotive electronics - Power management systems

Detailed and Complete Alternative Models

Some alternative models to the ISL6551IR include: - LM2576-ADJ - LT1084CP-5 - TPS5430DDAR - MAX15062AASA+

These models offer similar functionality and can be considered as alternatives based on specific requirements.

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