ISL6522BIB

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

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

Package: 28-Lead SOIC (Small Outline Integrated Circuit)

Essence: The ISL6522BIB is a power management IC designed to regulate voltage efficiently and provide protection against overcurrent and thermal shutdown.

Packaging/Quantity: The ISL6522BIB is available in a 28-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: 3A
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The ISL6522BIB has a total of 28 pins. The pin configuration is as follows:

1. VIN
2. VIN
3. VCC
4. VCC
5. GND
6. GND
7. GND
8. GND
9. FB
10. COMP
11. SS/TRK
12. PGND
13. PGND
14. PGND
15. PGND
16. LX
17. LX
18. LX
19. LX
20. BOOT
21. PGOOD
22. EN
23. OCSET
24. OCSET
25. OCSET
26. OCSET
27. VREF
28. VREF

Functional Features

• High-efficiency synchronous buck regulator
• Adjustable output voltage
• Overcurrent protection with adjustable threshold
• Thermal shutdown protection
• Soft-start and tracking capability
• Power Good (PGOOD) output signal

Advantages and Disadvantages

Advantages: - High efficiency helps reduce power consumption - Wide input voltage range allows for versatile applications - Overcurrent and thermal shutdown protection ensure system safety - Adjustable output voltage provides flexibility - Soft-start and tracking capability enable smooth power-up sequences

Disadvantages: - Limited maximum output current of 3A may not be suitable for high-power applications - Requires external components for proper operation

Working Principles

The ISL6522BIB operates as a synchronous buck regulator, converting the input voltage to a regulated output voltage. It utilizes pulse-width modulation (PWM) control to adjust the duty cycle of the switching transistor, regulating the output voltage. The device incorporates overcurrent protection, which monitors the load current and shuts down the regulator if it exceeds a set threshold. Additionally, thermal shutdown protection prevents the IC from overheating.

Detailed Application Field Plans

The ISL6522BIB is commonly used in various applications, including but not limited to: - Power supplies for computer peripherals - Industrial equipment - Telecommunications systems - Consumer electronics - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the ISL6522BIB are: - LM2576-ADJ - LT1370 - TPS5430

These models offer similar functionality and can be used as replacements depending on specific requirements.

In conclusion, the ISL6522BIB is a power management IC that provides efficient voltage regulation, overcurrent protection, and thermal shutdown protection. Its wide input voltage range and adjustable output voltage make it suitable for various applications. However, its limited maximum output current and requirement for external components should be taken into consideration. Alternative models such as LM2576-ADJ, LT1370, and TPS5430 can be considered as alternatives depending on specific needs.