ISL6531CRZ-T

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High efficiency - Low power consumption - Compact size - Wide input voltage range - Multiple protection features

Package: 20-Lead QFN (Quad Flat No-Lead)

Essence: The ISL6531CRZ-T is a power management IC designed for efficient power delivery in various electronic devices.

Packaging/Quantity: The ISL6531CRZ-T is available in a 20-Lead QFN package. The quantity per package may vary depending on the supplier.

Specifications

The ISL6531CRZ-T has the following specifications:

• Input Voltage Range: 4.5V to 25V
• Output Voltage Range: 0.8V to 5.5V
• Maximum Output Current: 6A
• Switching Frequency: Up to 1MHz
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The ISL6531CRZ-T has a 20-pin configuration with the following pin functions:

1. VIN: Input voltage
2. VCC: Power supply voltage
3. GND: Ground
4. FB1: Feedback input for channel 1
5. COMP1: Compensation node for channel 1
6. SS1: Soft-start control for channel 1
7. PG1: Power good indicator for channel 1
8. LX1: Switching node for channel 1
9. BST1: Bootstrap capacitor connection for channel 1
10. EN1: Enable control for channel 1
11. FB2: Feedback input for channel 2
12. COMP2: Compensation node for channel 2
13. SS2: Soft-start control for channel 2
14. PG2: Power good indicator for channel 2
15. LX2: Switching node for channel 2
16. BST2: Bootstrap capacitor connection for channel 2
17. EN2: Enable control for channel 2
18. VSENSE1: Current sense input for channel 1
19. VSENSE2: Current sense input for channel 2
20. VREF: Reference voltage output

Functional Features

The ISL6531CRZ-T offers the following functional features:

• Dual-channel synchronous buck controller
• Adaptive on-time D-CAP+™ control architecture
• Voltage mode control with feed-forward compensation
• Programmable soft-start and power good indicators
• Overcurrent protection
• Overvoltage protection
• Undervoltage lockout
• Thermal shutdown protection

Advantages and Disadvantages

Advantages: - High efficiency power delivery - Wide input voltage range allows compatibility with various power sources - Compact size enables integration into space-constrained designs - Multiple protection features ensure safe operation

Disadvantages: - Limited maximum output current of 6A may not be suitable for high-power applications

Working Principles

The ISL6531CRZ-T operates as a dual-channel synchronous buck controller. It utilizes an adaptive on-time D-CAP+™ control architecture to regulate the output voltage efficiently. The voltage mode control with feed-forward compensation ensures stable and accurate voltage regulation. The IC incorporates various protection mechanisms such as overcurrent, overvoltage, undervoltage lockout, and thermal shutdown to safeguard the system.

Detailed Application Field Plans

The ISL6531CRZ-T is commonly used in the following application fields:

1. Computer motherboards
2. Servers
3. Networking equipment
4. Industrial automation systems
5. Telecommunications devices

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the ISL6531CRZ-T are:

1. LTC3880: Dual-phase synchronous buck controller with high efficiency and advanced protection features.
2. TPS53632: Dual-channel synchronous buck controller with integrated power MOSFETs for compact designs.
3. MAX20751: Dual-phase synchronous buck controller with wide input voltage range and flexible configuration options.

These alternative models offer similar functionality and can be suitable replacements depending on specific requirements.

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