ISL6523CB

Product Overview

Category

ISL6523CB belongs to the category of integrated circuits (ICs).

Use

The ISL6523CB is commonly used as a power management IC in various electronic devices.

Characteristics

• The ISL6523CB is designed to provide multiple power supply rails for different components within a device.
• It offers high efficiency and low power consumption.
• The IC has built-in protection features such as overvoltage, undervoltage, and overcurrent protection.
• It supports both synchronous and asynchronous buck converters.

Package

ISL6523CB is available in a compact 20-pin QFN package.

Essence

The essence of ISL6523CB lies in its ability to efficiently regulate and distribute power within electronic devices.

Packaging/Quantity

ISL6523CB is typically sold in reels containing a quantity of 250 units per reel.

Specifications

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 0.8V to 5.5V
• Maximum Output Current: 3A
• Switching Frequency: Up to 1MHz
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The detailed pin configuration of ISL6523CB is as follows:

1. VIN: Input voltage
2. VCC: Power supply for internal circuitry
3. PGND: Power ground
4. SW1: Switch node for buck converter 1
5. SW2: Switch node for buck converter 2
6. FB1: Feedback input for buck converter 1
7. FB2: Feedback input for buck converter 2
8. EN1: Enable control for buck converter 1
9. EN2: Enable control for buck converter 2
10. SS1: Soft-start control for buck converter 1
11. SS2: Soft-start control for buck converter 2
12. PGND: Power ground
13. VCC: Power supply for internal circuitry
14. BOOT1: Bootstrap capacitor connection for buck converter 1
15. LX1: Inductor connection for buck converter 1
16. LX2: Inductor connection for buck converter 2
17. SW2: Switch node for buck converter 2
18. FB1: Feedback input for buck converter 1
19. FB2: Feedback input for buck converter 2
20. VIN: Input voltage

Functional Features

• Dual buck converters for efficient power management.
• Synchronous and asynchronous operation modes.
• Adjustable output voltage and current limits.
• Overvoltage, undervoltage, and overcurrent protection.
• Soft-start and enable control for smooth power-up.

Advantages and Disadvantages

Advantages

• High efficiency power conversion.
• Compact package size.
• Built-in protection features.
• Flexible operating modes.

Disadvantages

• Limited maximum output current (3A).
• Requires external components for proper operation.

Working Principles

The ISL6523CB operates by regulating the input voltage and converting it into multiple output voltages using its dual buck converters. The feedback inputs (FB1 and FB2) monitor the output voltages and adjust the duty cycle of the switches (SW1 and SW2) to maintain the desired output levels. The IC also incorporates various protection mechanisms to safeguard against voltage spikes, overcurrent conditions, and other potential faults.

Detailed Application Field Plans

ISL6523CB finds applications in a wide range of electronic devices, including but not limited to: - Laptops and notebooks - Desktop computers - Servers - Telecommunications equipment - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to ISL6523CB are: - TPS54332 - LTC3636 - MAX17503

These models offer similar functionality and features, providing options for designers based on specific requirements.

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