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ISL6553CBZ
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ISL6553CBZ

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics: High efficiency, low power consumption
  • Package: CBZ package
  • Essence: Power management IC
  • Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

  • Input Voltage Range: 4.5V to 28V
  • Output Voltage Range: 0.6V to 5.5V
  • Output Current: Up to 8A
  • Switching Frequency: 300kHz to 1MHz
  • Efficiency: Up to 95%
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The ISL6553CBZ has a total of 20 pins. The pin configuration is as follows:

  1. VIN: Input voltage
  2. GND: Ground
  3. FB: Feedback voltage
  4. COMP: Compensation node
  5. SS: Soft-start capacitor connection
  6. VCC: Supply voltage for internal circuitry
  7. PGND: Power ground
  8. BOOT: High-side gate driver bootstrap supply
  9. LX: Switching node
  10. VSENSE: Current sense input
  11. VREF: Reference voltage output
  12. EN: Enable control
  13. OCSET: Overcurrent threshold setting
  14. ITH: Current limit threshold setting
  15. RT: Oscillator timing resistor
  16. CT: Oscillator timing capacitor
  17. SYNC: Synchronization input
  18. PGOOD: Power good indicator
  19. SS/TRK: Soft-start/tracking capacitor connection
  20. VCCP: Power supply for the controller

Functional Features

  • Integrated synchronous buck PWM controller
  • Adjustable output voltage through feedback voltage
  • Programmable soft-start and tracking functions
  • Overcurrent protection with adjustable threshold
  • Power good indicator for output voltage monitoring
  • Synchronization capability for multi-phase operation

Advantages and Disadvantages

Advantages: - High efficiency, reducing power consumption - Wide input and output voltage range - Adjustable output voltage and current limit - Compact CBZ package for space-saving designs

Disadvantages: - Limited maximum output current (8A) - Requires external components for complete circuit implementation

Working Principles

The ISL6553CBZ is a voltage regulator IC that utilizes a synchronous buck converter topology. It operates by converting a higher input voltage to a lower output voltage with high efficiency. The integrated PWM controller generates the necessary control signals to drive the power MOSFETs, which regulate the output voltage. The feedback voltage is compared to a reference voltage, and the controller adjusts the duty cycle of the switching signal to maintain the desired output voltage.

Detailed Application Field Plans

The ISL6553CBZ is commonly used in various applications, including:

  1. Computer motherboards
  2. Graphics cards
  3. Industrial power supplies
  4. Telecom equipment
  5. Consumer electronics

Detailed and Complete Alternative Models

  1. ISL6553CRZ: Similar specifications and features, different package (CRZ package)
  2. ISL6553IRZ: Similar specifications and features, different package (IRZ package)
  3. ISL6553EVAL1Z: Evaluation board for testing and prototyping purposes

These alternative models provide similar functionality and can be used as replacements for the ISL6553CBZ in different applications.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de ISL6553CBZ en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of ISL6553CBZ in technical solutions:

  1. Q: What is ISL6553CBZ? A: ISL6553CBZ is a voltage mode PWM controller IC designed for power supply applications.

  2. Q: What is the input voltage range supported by ISL6553CBZ? A: The input voltage range supported by ISL6553CBZ is typically between 4.5V and 28V.

  3. Q: What is the output voltage range that can be regulated using ISL6553CBZ? A: ISL6553CBZ can regulate output voltages ranging from 0.6V to 5.5V.

  4. Q: Can ISL6553CBZ handle high current loads? A: Yes, ISL6553CBZ is capable of handling high current loads with its integrated MOSFET drivers.

  5. Q: Does ISL6553CBZ support synchronous rectification? A: Yes, ISL6553CBZ supports synchronous rectification for improved efficiency.

  6. Q: What is the maximum switching frequency of ISL6553CBZ? A: The maximum switching frequency of ISL6553CBZ is typically around 500kHz.

  7. Q: Is ISL6553CBZ suitable for both step-up (boost) and step-down (buck) applications? A: Yes, ISL6553CBZ can be used in both step-up and step-down configurations.

  8. Q: Does ISL6553CBZ have built-in protection features? A: Yes, ISL6553CBZ includes various protection features such as overcurrent protection, overvoltage protection, and thermal shutdown.

  9. Q: Can ISL6553CBZ operate in a wide temperature range? A: Yes, ISL6553CBZ is designed to operate in a wide temperature range, typically from -40°C to 85°C.

  10. Q: What are some typical applications of ISL6553CBZ? A: ISL6553CBZ is commonly used in various power supply applications such as computer peripherals, telecom equipment, industrial systems, and consumer electronics.

Please note that the answers provided here are general and may vary depending on specific design considerations and requirements.