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ISL88739HRZ-T
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ISL88739HRZ-T

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

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

Package: HRZ-T package

Essence: The ISL88739HRZ-T is a voltage regulator IC designed for various applications that require stable and regulated power supply.

Packaging/Quantity: The ISL88739HRZ-T is available in a HRZ-T package, which consists of a small plastic package with exposed pad. It is typically sold in reels or tubes containing multiple units.

Specifications

  • Input Voltage Range: 2.5V to 28V
  • Output Voltage Range: 0.8V to 6V
  • Output Current: Up to 3A
  • Dropout Voltage: 200mV at 1A
  • Quiescent Current: 120µA
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The ISL88739HRZ-T has the following pin configuration:

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. EN: Enable pin
  4. FB: Feedback pin
  5. VOUT: Output voltage pin

Functional Features

  • High Efficiency: The ISL88739HRZ-T utilizes advanced circuitry to achieve high efficiency, minimizing power loss and maximizing battery life.
  • Low Dropout Voltage: The regulator maintains a low dropout voltage, ensuring stable output voltage even when the input voltage is close to the desired output voltage.
  • Wide Input Voltage Range: The IC can accept a wide range of input voltages, making it suitable for various applications.
  • Overcurrent Protection: The ISL88739HRZ-T incorporates overcurrent protection, safeguarding the circuit from excessive current flow.
  • Thermal Shutdown Protection: In case of excessive temperature, the IC automatically shuts down to prevent damage.

Advantages and Disadvantages

Advantages: - High efficiency leads to longer battery life - Wide input voltage range allows for versatile applications - Overcurrent and thermal shutdown protection enhance reliability

Disadvantages: - Limited output current capacity (up to 3A)

Working Principles

The ISL88739HRZ-T is a linear voltage regulator that uses a feedback mechanism to maintain a stable output voltage. It compares the output voltage with a reference voltage and adjusts the internal circuitry to achieve the desired output voltage. The regulator operates by controlling the flow of current between the input and output pins, ensuring a constant voltage regardless of load variations.

Detailed Application Field Plans

The ISL88739HRZ-T can be used in various applications where a stable and regulated power supply is required. Some potential application fields include:

  1. Portable electronic devices: Provides regulated power to smartphones, tablets, and portable gaming consoles.
  2. Industrial equipment: Ensures stable power supply for control systems, sensors, and communication modules.
  3. Automotive electronics: Used in automotive infotainment systems, navigation devices, and lighting controls.
  4. Medical devices: Provides reliable power to medical instruments and monitoring equipment.
  5. Renewable energy systems: Regulates power supply in solar panels, wind turbines, and battery charging systems.

Detailed and Complete Alternative Models

  1. LM317: A popular linear voltage regulator with adjustable output voltage.
  2. LT1086: Low dropout voltage regulator with high current capability.
  3. TPS7A4700: Ultra-low noise, high PSRR voltage regulator suitable for sensitive audio applications.
  4. LM1117: Fixed output voltage regulator available in various voltage options.
  5. MAX603: Low-power, low-dropout voltage regulator with ultra-low quiescent current.

These alternative models offer similar functionality and can be considered as substitutes for the ISL88739HRZ-T in different applications.

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Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням ISL88739HRZ-T у технічних рішеннях

Sure! Here are 10 common questions and answers related to the application of ISL88739HRZ-T in technical solutions:

  1. Q: What is ISL88739HRZ-T? A: ISL88739HRZ-T is a highly integrated battery charger controller IC designed for single-cell Li-ion or Li-polymer batteries.

  2. Q: What is the input voltage range supported by ISL88739HRZ-T? A: The input voltage range supported by ISL88739HRZ-T is typically between 4.5V and 28V.

  3. Q: Can ISL88739HRZ-T charge multiple batteries simultaneously? A: No, ISL88739HRZ-T is designed to charge a single-cell battery at a time.

  4. Q: What charging current can ISL88739HRZ-T provide? A: ISL88739HRZ-T can provide a charging current up to 4A, depending on the external components used.

  5. Q: Does ISL88739HRZ-T support fast charging? A: Yes, ISL88739HRZ-T supports various charging profiles, including fast charging, based on the configuration and external components used.

  6. Q: Can ISL88739HRZ-T be used in portable devices? A: Yes, ISL88739HRZ-T is commonly used in portable devices such as smartphones, tablets, and wearable devices.

  7. Q: Does ISL88739HRZ-T have built-in safety features? A: Yes, ISL88739HRZ-T incorporates several safety features like overvoltage protection, overcurrent protection, and thermal shutdown to ensure safe charging.

  8. Q: What is the typical efficiency of ISL88739HRZ-T? A: The typical efficiency of ISL88739HRZ-T is around 90%, which helps in reducing power dissipation and maximizing battery life.

  9. Q: Can ISL88739HRZ-T be used in automotive applications? A: Yes, ISL88739HRZ-T can be used in automotive applications that require single-cell battery charging.

  10. Q: Are evaluation boards available for ISL88739HRZ-T? A: Yes, Intersil (now Renesas Electronics) provides evaluation boards and reference designs for ISL88739HRZ-T to aid in the development process.

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