Intersil

ISL9003IECZ-T

ISL9003IECZ-T Description

The ISL9003IECZ-T is a highly efficient linear regulator designed for applications requiring precise voltage regulation and low power consumption. Manufactured by Intersil, a leading provider of power management solutions, this IC offers a fixed output voltage of 1.8V and can deliver up to 150mA of output current. The regulator is designed to operate with an input voltage range up to 6.5V, making it suitable for a variety of electronic systems.

ISL9003IECZ-T Features

• Low Quiescent Current: The ISL9003IECZ-T boasts a low quiescent current of 39 µA, which is crucial for battery-powered devices where minimizing power consumption is essential. This feature ensures that the regulator draws minimal current when idle, thereby extending the battery life.

• High PSRR: With a Power Supply Rejection Ratio (PSRR) ranging from 90dB at 1kHz to 50dB at 100kHz, the ISL9003IECZ-T effectively filters out noise from the input power supply. This high PSRR ensures clean and stable output voltage, making it ideal for sensitive analog circuits and low-noise applications.

• Fixed Output Configuration: The regulator provides a fixed positive output voltage of 1.8V, simplifying the design process for engineers. This fixed output configuration eliminates the need for external resistors to set the output voltage, reducing component count and board space.

• Enable Control Feature: The ISL9003IECZ-T includes an enable control feature, allowing the regulator to be turned on or off via an external signal. This feature provides additional control over the power management system, enabling power savings and dynamic power management.

• Protection Features: The regulator incorporates comprehensive protection features, including over-current protection, over-temperature protection, soft start, and under-voltage lockout (UVLO). These features ensure reliable operation and protect the regulator and connected components from damage under various fault conditions.

• Surface Mount Package: The ISL9003IECZ-T is available in a surface mount SC70-5 package, which is compact and suitable for high-density PCB layouts. This package type facilitates easy integration into modern electronic designs and supports automated assembly processes.

ISL9003IECZ-T Applications

The ISL9003IECZ-T is well-suited for a range of applications where low power consumption, high PSRR, and reliable operation are critical. Specific use cases include:

• Battery-Powered Devices: The low quiescent current and efficient power management make this regulator ideal for portable devices such as smartphones, tablets, and wearable electronics.

• Sensitive Analog Circuits: The high PSRR ensures that the regulator can provide clean power to sensitive analog circuits, such as audio amplifiers, ADCs, and DACs, without introducing noise.

• Embedded Systems: The fixed output voltage and compact package size make the ISL9003IECZ-T suitable for embedded systems where space is limited and reliability is paramount.

• Industrial and Medical Equipment: The comprehensive protection features and high reliability make this regulator suitable for use in industrial control systems and medical devices where robust power management is required.

Conclusion of ISL9003IECZ-T

The ISL9003IECZ-T is a versatile and efficient linear regulator that offers a combination of low power consumption, high PSRR, and comprehensive protection features. Its fixed output voltage and compact surface mount package make it an ideal choice for a variety of applications, particularly in battery-powered devices and sensitive analog circuits. While the product is now obsolete, its unique features and performance benefits continue to make it a valuable component for engineers and designers in the electronics industry.