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ISL9222AIRTZ-T
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ISL9222AIRTZ-T

Product Overview

Category

ISL9222AIRTZ-T belongs to the category of integrated circuits (ICs).

Use

The ISL9222AIRTZ-T is commonly used as a battery charger IC for portable electronic devices.

Characteristics

  • High efficiency charging
  • Wide input voltage range
  • Programmable charge current
  • Overvoltage and overcurrent protection
  • Thermal regulation and protection
  • Small form factor

Package

The ISL9222AIRTZ-T is available in a compact 16-pin QFN package.

Essence

This IC is essential for efficient and safe charging of batteries in portable electronic devices.

Packaging/Quantity

The ISL9222AIRTZ-T is typically packaged in reels, with 2500 units per reel.

Specifications

  • Input Voltage Range: 4.5V to 28V
  • Charge Voltage Range: 3.6V to 4.44V
  • Charge Current Range: 50mA to 4000mA
  • Operating Temperature Range: -40°C to +85°C
  • Efficiency: Up to 95%
  • Protection Features: Overvoltage, overcurrent, thermal regulation, short circuit

Detailed Pin Configuration

  1. VBUS: Input voltage from power source
  2. GND: Ground reference
  3. TS: Thermistor input for temperature monitoring
  4. PROG: Programming pin for charge current setting
  5. STAT: Status output pin
  6. CE: Enable control pin
  7. ISET: Current sense resistor connection
  8. BAT: Battery positive terminal
  9. VSS: Negative supply voltage
  10. VDD: Positive supply voltage
  11. PGND: Power ground
  12. SRN: Sense resistor negative terminal
  13. SRP: Sense resistor positive terminal
  14. VREF: Reference voltage output
  15. SDA: I2C data line
  16. SCL: I2C clock line

Functional Features

  • High-efficiency synchronous buck charger
  • Programmable charge current through external resistor
  • I2C interface for configuration and monitoring
  • Battery temperature monitoring and protection
  • Fault detection and reporting through status pin
  • Overvoltage and overcurrent protection

Advantages and Disadvantages

Advantages

  • High charging efficiency reduces power loss
  • Wide input voltage range allows compatibility with various power sources
  • Programmable charge current enables flexibility in charging different battery types
  • Comprehensive protection features ensure safe charging operation
  • Compact package size saves board space

Disadvantages

  • Requires additional external components for complete charging system
  • Limited availability of alternative models from other manufacturers

Working Principles

The ISL9222AIRTZ-T operates as a synchronous buck charger, converting the input voltage from the power source to a regulated charging voltage for the battery. The charge current can be programmed through an external resistor connected to the PROG pin. The IC communicates with the host system through an I2C interface, allowing configuration and monitoring of various parameters. It incorporates multiple protection mechanisms such as overvoltage, overcurrent, and thermal regulation to ensure safe charging operation.

Detailed Application Field Plans

The ISL9222AIRTZ-T is widely used in portable electronic devices that require efficient and reliable battery charging. Some common application fields include:

  1. Smartphones and tablets
  2. Portable gaming consoles
  3. Wearable devices
  4. Bluetooth speakers
  5. Power banks
  6. Digital cameras
  7. Handheld medical devices

Detailed and Complete Alternative Models

While the ISL9222AIRTZ-T is a popular choice for battery charger ICs, there are alternative models available from other manufacturers. Some notable alternatives include:

  1. BQ24195RGET - Texas Instruments
  2. LTC4000-1 - Analog Devices
  3. MAX8903CETI+ - Maxim Integrated
  4. MCP73871-2CCI/ML - Microchip Technology

These alternative models offer similar functionality and features, providing options for designers and manufacturers in selecting the most suitable battery charger IC for their specific applications.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de ISL9222AIRTZ-T en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of ISL9222AIRTZ-T in technical solutions:

  1. Q: What is ISL9222AIRTZ-T? A: ISL9222AIRTZ-T is a highly integrated, high-efficiency, dual-input/single-cell Li-ion battery charger IC.

  2. Q: What are the key features of ISL9222AIRTZ-T? A: The key features include dual-input power paths, programmable input current limit, thermal regulation, and automatic recharge.

  3. Q: What is the input voltage range supported by ISL9222AIRTZ-T? A: The input voltage range is from 3.9V to 6.5V.

  4. Q: Can ISL9222AIRTZ-T charge multiple types of batteries? A: Yes, it can charge single-cell Li-ion, Li-polymer, and LiFePO4 batteries.

  5. Q: Does ISL9222AIRTZ-T support USB Type-C Power Delivery (PD)? A: No, ISL9222AIRTZ-T does not support USB PD. It is primarily designed for low-power applications.

  6. Q: What is the maximum charging current supported by ISL9222AIRTZ-T? A: The maximum charging current is programmable up to 2A.

  7. Q: Does ISL9222AIRTZ-T have built-in safety features? A: Yes, it has various safety features like overvoltage protection, overcurrent protection, and thermal shutdown.

  8. Q: Can ISL9222AIRTZ-T operate while charging the battery? A: Yes, it supports simultaneous charging and system operation.

  9. Q: What is the typical efficiency of ISL9222AIRTZ-T? A: The typical charging efficiency is around 90%.

  10. Q: Is there any evaluation board available for ISL9222AIRTZ-T? A: Yes, Intersil provides an evaluation board (ISL9222AEVAL1Z) to facilitate testing and development with ISL9222AIRTZ-T.

Please note that these answers are based on general information and it's always recommended to refer to the datasheet and application notes for specific details and guidelines.