ISL80101IR50Z-T

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The ISL80101IR50Z-T is a single-output low-dropout (LDO) linear regulator manufactured by Intersil. It provides a fixed positive output voltage of 5V with a maximum continuous output current of 1A. The device operates from an input voltage range of 2.2V to 6V and utilizes a sub-micron BiCMOS process. It is housed in a compact 10-lead DFN package measuring 3mm x 3mm. Key electrical characteristics include a typical power supply rejection ratio (PSRR) of 58 dB, a maximum dropout voltage of 212 mV at full load, and a quiescent current of 5 mA. The regulator supports an operating temperature range from -40°C to +125°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Integrated enable feature for low quiescent current shutdown mode
• Adjustable in-rush current via external soft-start capacitor
• High power supply rejection ratio for noise-sensitive applications

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Low-voltage microprocessor power supplies
• Portable consumer electronics such as PDAs and cellular phones
• Battery-powered systems requiring efficient linear regulation

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm the manufacturer designation matches Intersil or its successor Renesas Electronics. Ensure the part number corresponds to the fixed 5V output variant rather than adjustable versions within the ISL80101 family. Cross-reference the package marking against official datasheets to prevent counterfeit substitution.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 5V rail is required with up to 1A load capability. It is suitable for designs where input voltages remain between 2.2V and 6V. Consider the thermal performance of the 3x3mm DFN package under high ambient temperatures. Verify that the required PSRR meets system noise specifications, as the device offers 58 dB typical rejection.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the ISL80101 series of high-performance linear regulators. The series includes variants with different fixed output voltages and adjustable options. The ISL80101 is distinguished by its 1A output current rating, contrasting with the higher current ISL80102 (2A) and ISL80103 (3A) models. All share similar pinouts and operational characteristics.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Direct substitutes include other ISL80101 variants with identical pinouts but different output voltages, such as ISL80101IR33Z for 3.3V outputs. For higher current needs, the ISL80102 series may be considered if pin compatibility allows.