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ISL9021AIIUZ-T

ISL9021AIIUZ-T Description

The ISL9021AIIUZ-T is a linear regulator designed for power management applications, offering a fixed output voltage of 3.1V with a maximum output current of 250mA. Manufactured by Renesas Electronics Corporation, this device is part of the Power Management Integrated Circuits (PMIC) category. It features a maximum input voltage of 5.5V and a dropout voltage of 0.25V at 250mA, ensuring efficient power conversion even at low input voltages. The ISL9021AIIUZ-T is housed in a 4WLCSP package and is available in a surface mount configuration, making it suitable for compact and space-constrained designs. Despite being marked as obsolete, it remains a reliable choice for applications requiring a stable and efficient power supply.

ISL9021AIIUZ-T Features

• Output Type: Fixed at 3.1V, providing a stable and consistent power supply.
• Input Voltage Range: Up to 5.5V, allowing flexibility in input power sources.
• Output Current: Capable of delivering up to 250mA, suitable for a wide range of low-power applications.
• Low Dropout Voltage: 0.25V at 250mA, ensuring high efficiency even at low input-to-output voltage differentials.
• Quiescent Current: Low at 50 µA, minimizing power consumption in standby mode.
• Control Features: Includes an enable function for power control and sequencing.
• Protection Features: Comprehensive protection mechanisms such as over-current, over-temperature, reverse polarity, short circuit, and soft start ensure robust and reliable operation.
• Compliance: ROHS3 compliant and REACH unaffected, meeting environmental and regulatory standards.
• Moisture Sensitivity Level: MSL 1 (Unlimited), suitable for various manufacturing environments.
• Packaging: Tape & Reel (TR) packaging for convenient handling and assembly.

ISL9021AIIUZ-T Applications

The ISL9021AIIUZ-T is ideal for a variety of applications where a stable and efficient power supply is required. Its low dropout voltage and fixed output voltage make it particularly suitable for battery-powered devices and portable electronics. The enable function allows for precise control over power sequencing, making it a good fit for systems that require controlled power-up and shutdown. The comprehensive protection features ensure that the device can withstand various fault conditions, enhancing its reliability in critical applications. Specific use cases include:

• Portable Devices: Ideal for smartphones, tablets, and other handheld devices where space and power efficiency are critical.
• Battery-Powered Systems: Suitable for applications such as wearable devices, IoT sensors, and medical devices that rely on battery power.
• Embedded Systems: Can be used in embedded systems where a stable power supply is essential for reliable operation.
• Consumer Electronics: Applicable in various consumer electronics where low power consumption and compact design are important.

Conclusion of ISL9021AIIUZ-T

The ISL9021AIIUZ-T, despite being marked as obsolete, remains a valuable component for power management applications. Its fixed 3.1V output, low dropout voltage, and comprehensive protection features make it a reliable choice for a variety of low-power applications. The enable function and low quiescent current further enhance its suitability for battery-powered and portable devices. While newer alternatives may be available, the ISL9021AIIUZ-T continues to offer a proven and efficient solution for power management needs.