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ISL6551ABZ-T
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ISL6551ABZ-T

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

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

Package: 8-Lead SOIC (Small Outline Integrated Circuit)

Essence: The ISL6551ABZ-T is a voltage regulator IC designed for various applications requiring stable and adjustable output voltages.

Packaging/Quantity: The ISL6551ABZ-T is available in a standard 8-Lead SOIC package. It is typically sold in reels containing a quantity of 2500 units.

Specifications

  • Input Voltage Range: 4.5V to 28V
  • Output Voltage Range: 0.8V to 5.5V
  • Maximum Output Current: 10A
  • Quiescent Current: 120µA
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The ISL6551ABZ-T has the following pin configuration:

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. FB: Feedback pin for adjusting the output voltage
  4. COMP: Compensation pin for stability control
  5. SS/TR: Soft-start/Tracking pin for controlling the startup behavior
  6. EN: Enable pin for turning the regulator on/off
  7. VCC: Supply voltage pin
  8. VOUT: Output voltage pin

Functional Features

  • High Efficiency: The ISL6551ABZ-T utilizes advanced circuitry to achieve high efficiency, minimizing power losses.
  • Low Power Consumption: The IC itself consumes very low power, contributing to overall energy savings.
  • Wide Input Voltage Range: The regulator can accept a wide range of input voltages, making it suitable for various applications.
  • Adjustable Output Voltage: The output voltage can be easily adjusted using the feedback pin (FB).
  • Overcurrent Protection: The IC incorporates overcurrent protection to safeguard against excessive current flow.
  • Thermal Shutdown Protection: In case of overheating, the regulator automatically shuts down to prevent damage.

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings - Wide input voltage range allows for versatile use - Adjustable output voltage provides flexibility - Overcurrent and thermal shutdown protection enhance reliability

Disadvantages: - Limited maximum output current of 10A - Requires external components for complete voltage regulation circuit

Working Principles

The ISL6551ABZ-T operates based on a pulse-width modulation (PWM) control scheme. It regulates the output voltage by adjusting the duty cycle of the internal switching transistor. The feedback pin (FB) is used to sense the output voltage and provide the necessary control signal to maintain the desired voltage level.

Detailed Application Field Plans

The ISL6551ABZ-T is widely used in various applications that require stable and adjustable output voltages. Some common application fields include:

  1. Power supplies for computer systems
  2. Industrial automation equipment
  3. Telecommunications devices
  4. Automotive electronics
  5. Battery charging circuits
  6. LED lighting systems

Detailed and Complete Alternative Models

  1. LM2576-ADJ: Adjustable Voltage Regulator IC with similar specifications and features.
  2. LT1084CP-ADJ: High Current Adjustable Voltage Regulator IC suitable for demanding applications.
  3. TPS5430-ADJ: Synchronous Buck Converter IC with adjustable output voltage and high efficiency.

These alternative models offer similar functionality and can be considered as substitutes for the ISL6551ABZ-T in specific applications.

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技術ソリューションにおける ISL6551ABZ-T の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of ISL6551ABZ-T in technical solutions:

  1. Q: What is ISL6551ABZ-T? A: ISL6551ABZ-T is a voltage mode PWM controller designed for DC-DC converters used in various applications.

  2. Q: What is the input voltage range supported by ISL6551ABZ-T? A: The input voltage range supported by ISL6551ABZ-T is typically between 4.5V and 28V.

  3. Q: What is the output voltage range that can be achieved using ISL6551ABZ-T? A: The output voltage range achievable with ISL6551ABZ-T depends on the external components used, but it can typically support voltages up to 5V.

  4. Q: Can ISL6551ABZ-T handle high current loads? A: Yes, ISL6551ABZ-T can handle high current loads with the help of external power MOSFETs.

  5. Q: Does ISL6551ABZ-T have any built-in protection features? A: Yes, ISL6551ABZ-T has built-in protection features such as overcurrent protection, overvoltage protection, and thermal shutdown.

  6. Q: Can ISL6551ABZ-T operate in a synchronous rectification mode? A: Yes, ISL6551ABZ-T can operate in both synchronous and asynchronous rectification modes.

  7. Q: What is the maximum switching frequency supported by ISL6551ABZ-T? A: The maximum switching frequency supported by ISL6551ABZ-T is typically around 500kHz.

  8. Q: Is ISL6551ABZ-T suitable for battery-powered applications? A: Yes, ISL6551ABZ-T is suitable for battery-powered applications as it has low quiescent current and supports a wide input voltage range.

  9. Q: Can ISL6551ABZ-T be used in both step-up and step-down converter configurations? A: Yes, ISL6551ABZ-T can be used in both step-up (boost) and step-down (buck) converter configurations.

  10. Q: What are the typical applications of ISL6551ABZ-T? A: ISL6551ABZ-T is commonly used in various applications such as telecom power supplies, industrial power systems, and automotive electronics.

Please note that these answers are general and may vary depending on specific design requirements and application scenarios.