ISL6569ACB-T

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Wide input voltage range - Low dropout voltage - Overcurrent protection - Thermal shutdown protection

Package: 16-Lead SOIC (Small Outline Integrated Circuit)

Essence: The ISL6569ACB-T is a voltage regulator IC designed for high-efficiency power management applications.

Packaging/Quantity: The ISL6569ACB-T is available in a 16-Lead SOIC package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4.5V to 25V
• Output Voltage Range: 0.8V to 5.5V
• Maximum Output Current: 20A
• Dropout Voltage: 200mV at 10A
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The ISL6569ACB-T has the following pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. FB: Feedback Voltage
4. COMP: Compensation
5. SS: Soft-Start
6. EN: Enable
7. VCC: Supply Voltage
8. PGND: Power Ground
9. BOOT: Bootstrap
10. LX: Switch Node
11. VSENSE: Current Sense
12. OCSET: Overcurrent Set
13. PGOOD: Power Good
14. RT: Timing Resistor
15. CT: Timing Capacitor
16. VREF: Reference Voltage

Functional Features

• High-efficiency synchronous buck regulator
• Adjustable output voltage
• Overcurrent protection with adjustable threshold
• Soft-start function for controlled startup
• Power good indicator for system monitoring
• Thermal shutdown protection to prevent overheating

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption - Wide input voltage range allows for versatile applications - Low dropout voltage minimizes power loss - Overcurrent protection ensures system safety - Thermal shutdown protection prevents damage from overheating

Disadvantages: - Limited maximum output current of 20A - Requires external timing resistor and capacitor for operation

Working Principles

The ISL6569ACB-T is a synchronous buck regulator that converts a higher input voltage to a lower output voltage. It utilizes high-efficiency MOSFETs to minimize power loss during the conversion process. The feedback voltage (FB) pin is used to adjust the output voltage, while the compensation (COMP) pin ensures stable operation by compensating for loop response.

The soft-start (SS) pin gradually ramps up the output voltage during startup to prevent excessive inrush current. The enable (EN) pin controls the regulator's on/off state. The power good (PGOOD) pin provides a signal indicating the output voltage is within the desired range.

In case of overcurrent conditions, the overcurrent set (OCSET) pin allows the user to set the threshold at which the regulator shuts down to protect the system. Additionally, the thermal shutdown feature safeguards against excessive temperature by disabling the regulator when it reaches a critical level.

Detailed Application Field Plans

The ISL6569ACB-T is commonly used in various applications, including:

1. Computer motherboards
2. Graphics cards
3. Industrial power supplies
4. Telecom infrastructure
5. Automotive electronics

Its high efficiency, wide input voltage range, and overcurrent protection make it suitable for demanding power management requirements in these fields.

Detailed and Complete Alternative Models

1. ISL6569CB-T
2. ISL6569CCB-T
3. ISL6569ACBZ-T
4. ISL6569CBZ-T

These alternative models offer similar functionality and characteristics to the ISL6569ACB-T, providing flexibility in design and sourcing options.

In conclusion, the ISL6569ACB-T is a high-efficiency voltage regulator IC with a wide input voltage range and various protection features. Its compact 16-Lead SOIC package makes it suitable for space-constrained applications. With its adjustable output voltage and overcurrent protection, it finds applications in computer motherboards, graphics cards, industrial power supplies, telecom infrastructure, and automotive electronics.