ISL88731AHRZ

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

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

Package: QFN (Quad Flat No-Lead)

Essence: The ISL88731AHRZ is a voltage regulator IC designed to provide stable and regulated power supply in various electronic devices.

Packaging/Quantity: The ISL88731AHRZ is typically sold in reels of 2500 units.

Specifications

Input Voltage Range: 4.5V to 28V
Output Voltage Range: 0.8V to 5.5V
Output Current: Up to 3A
Dropout Voltage: 200mV at 1A
Quiescent Current: 120µA
Operating Temperature Range: -40°C to +85°C

Pin Configuration

The ISL88731AHRZ has the following pin configuration:

```

| | | 1 2 3 | | | | 4 5 6 | |_______________| ```

VIN: Input Voltage
GND: Ground
VOUT: Output Voltage
EN: Enable Pin
FB: Feedback Pin
PG: Power Good Indicator

Functional Features

High Efficiency: The ISL88731AHRZ offers high efficiency, minimizing power loss and maximizing battery life.
Low Dropout Voltage: The low dropout voltage ensures stable operation even when the input voltage is close to the desired output voltage.
Wide Input Voltage Range: The IC can handle a wide range of input voltages, making it suitable for various applications.
Adjustable Output Voltage: The output voltage can be adjusted within the specified range to meet specific requirements.
Overcurrent Protection: The IC incorporates overcurrent protection to prevent damage to the device and connected components.
Thermal Shutdown Protection: In case of excessive heat, the IC automatically shuts down to prevent overheating.

Advantages and Disadvantages

Advantages: - High efficiency - Wide input voltage range - Adjustable output voltage - Overcurrent and thermal shutdown protection

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

Working Principles

The ISL88731AHRZ operates as a linear voltage regulator. It takes the input voltage from VIN, regulates it to the desired output voltage, and provides a stable power supply to the connected load. The feedback pin (FB) monitors the output voltage and adjusts the internal circuitry to maintain the desired voltage level. The enable pin (EN) controls the ON/OFF state of the regulator.

Detailed Application Field Plans

The ISL88731AHRZ is commonly used in various electronic devices that require a regulated power supply, such as: - Laptops - Tablets - Smartphones - Portable gaming consoles - Industrial equipment

Alternative Models

LM317T
LT1085CT
TPS7A4700

These alternative models offer similar functionality and can be used as substitutes for the ISL88731AHRZ in certain applications.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan ISL88731AHRZ dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of ISL88731AHRZ in technical solutions:

Q: What is ISL88731AHRZ? A: ISL88731AHRZ is a highly integrated battery charger controller IC designed for single-cell Li-ion or Li-polymer batteries.
Q: What is the input voltage range supported by ISL88731AHRZ? A: The input voltage range supported by ISL88731AHRZ is typically between 4.5V and 28V.
Q: Can ISL88731AHRZ charge multiple batteries simultaneously? A: No, ISL88731AHRZ is designed to charge a single-cell battery at a time.
Q: What charging current can ISL88731AHRZ provide? A: ISL88731AHRZ can provide a charging current up to 4A, depending on the external components used.
Q: Does ISL88731AHRZ support fast charging? A: Yes, ISL88731AHRZ supports various charging profiles, including fast charging, based on the configuration and external components used.
Q: Can ISL88731AHRZ be used in portable devices? A: Yes, ISL88731AHRZ is commonly used in portable devices like smartphones, tablets, and other battery-powered devices.
Q: Does ISL88731AHRZ have built-in safety features? A: Yes, ISL88731AHRZ incorporates several safety features such as overvoltage protection, overcurrent protection, and thermal shutdown.
Q: Can ISL88731AHRZ operate in a wide temperature range? A: Yes, ISL88731AHRZ is designed to operate in a wide temperature range, typically from -40°C to +85°C.
Q: What is the typical efficiency of ISL88731AHRZ? A: The typical efficiency of ISL88731AHRZ is around 90-95%, depending on the input and output conditions.
Q: Are evaluation boards available for ISL88731AHRZ? A: Yes, Intersil (now Renesas Electronics) provides evaluation boards and reference designs for ISL88731AHRZ to help with the development and testing process.

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