Renesas Electronics Corporation Voltage Regulators - Linear ISL9000IRLLZ-T

The ISL9000IRLLZ-T is a dual low-dropout (LDO) voltage regulator from Quarktwin Technology Ltd., designed to provide two outputs of 300mA each. It operates with a wide input voltage range of 2.3V to 6.5V and features a low quiescent current of 42µA when both outputs are active. The device offers excellent load regulation with less than 0.1% voltage change across the full load current range and a very high power supply rejection ratio (PSRR) of 90dB at 1kHz, making it suitable for noise-sensitive applications. Each output has an individual power-on-reset (POR) function, with a fixed delay of approximately 2ms for one output and an externally programmable delay for the other. The LDO is stable with output capacitance ranging from 1µF to 10µF and can handle equivalent series resistance (ESR) up to 200mΩ. The device is packaged in a compact 10-lead 3mm x 3mm DFN package and operates within a temperature range of -40°C to +85°C. It includes features such as soft-start, current limit, and overheat protection, making it a robust choice for portable devices, including smartphones and handheld instruments.