ISL9221IRZ-T

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC for Battery Charging and Protection

Characteristics: - High efficiency - Fast charging capability - Overvoltage protection - Overcurrent protection - Thermal regulation

Package: 28-Lead Thin Shrink Small Outline Package (TSSOP)

Essence: The ISL9221IRZ-T is a power management IC designed specifically for battery charging and protection in various electronic devices.

Packaging/Quantity: The ISL9221IRZ-T is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4.5V to 6.5V
• Charging Current Range: Up to 3A
• Operating Temperature Range: -40°C to +85°C
• Battery Voltage Range: 2.5V to 4.5V
• Standby Current: <1µA
• Efficiency: >90%
• Overvoltage Protection Threshold: 4.35V
• Overcurrent Protection Threshold: 4.5A

Detailed Pin Configuration

The ISL9221IRZ-T has a total of 28 pins, each serving a specific function. Here is a detailed pin configuration:

1. VBUS: Input voltage from the USB port.
2. VBAT: Battery voltage input.
3. TS: Thermistor input for thermal regulation.
4. STAT: Status output pin.
5. ISET: Charging current setting pin.
6. PROG: Programming pin for various functions.
7. SDA: Serial data input/output pin.
8. SCL: Serial clock input pin.
9. INT: Interrupt output pin.
10. BATTEMP: Battery temperature input.
11. CHG: Charging status output pin.
12. CE: Chip enable input pin.
13. VSS: Ground pin. 14-28. Various power and signal pins.

Functional Features

1. Battery Charging: The ISL9221IRZ-T provides efficient charging of batteries with its high charging current capability and thermal regulation feature.
2. Overvoltage Protection: It safeguards the battery from excessive voltage levels, preventing damage to the battery and the device.
3. Overcurrent Protection: It protects the battery and the device by limiting the charging current to a safe level.
4. Fast Charging: The IC supports fast charging protocols, allowing for quicker battery charging times.
5. Status Monitoring: The STAT pin provides information about the charging status, enabling the device to display appropriate indicators or notifications.

Advantages and Disadvantages

Advantages: - High efficiency charging - Fast charging capability - Comprehensive protection features - Compact package size - Wide operating temperature range

Disadvantages: - Limited input voltage range (4.5V to 6.5V) - Requires external thermistor for thermal regulation

Working Principles

The ISL9221IRZ-T operates by regulating the charging current and monitoring the battery voltage and temperature. It uses internal control algorithms to adjust the charging parameters based on the battery's characteristics and the user-defined settings. The IC constantly monitors the charging process and ensures that the battery is charged efficiently and safely.

Detailed Application Field Plans

The ISL9221IRZ-T is widely used in various portable electronic devices, including: - Smartphones - Tablets - Laptops - Portable gaming consoles - Wearable devices

Detailed and Complete Alternative Models

1. BQ25895RGER: Power management IC for battery charging and protection with similar features and specifications.
2. LTC4162-L: Integrated circuit for battery charging and protection, offering advanced charging algorithms and communication capabilities.
3. MAX77860: Power management IC with battery charging and protection functions, suitable for high-performance mobile devices.

These alternative models provide similar functionalities to the ISL9221IRZ-T and can be considered as alternatives based on specific requirements and design considerations.

In conclusion, the ISL9221IRZ-T is a highly efficient power management IC designed for battery charging and protection in various electronic devices. With its comprehensive features and compact package, it offers reliable and safe charging solutions for portable devices.