Intersil ISL80101A LDO for USB Port Protection
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The ISL80101A is a low dropout voltage, single output LDO with programmable current limiting. This LDO operates from input voltages of 2.2V to 6V, and is capable of providing output voltages of 0.8V to 5V. Other custom voltage options are available upon request.
A sub-micron BiCMOS process is utilized for this product family to deliver the best in class analog performance and overall value. The programmable current limiting improves system reliability of end applications. An external capacitor on the soft-start pin provides an adjustable soft-starting ramp. The ENABLE feature allows the part to be placed into a low quiescent current shutdown mode.
This CMOS LDO will consume significantly lower quiescent current as a function of load compared to bipolar LDOs, which translates into higher efficiency and packages with smaller footprints. Quiescent current is modestly compromised to achieve a very fast load transient response.
Key Features
- Designed for accurate current limiting (+/- 10% typ)
- Soft-start limits the inrush current during start-up
- Input Voltage Range: 2.2V to 6V
- Tight ±1.8% VOUT accuracy over -40ºC<TJ<125ºC
- Very fast load transient response, excellent AC accuracy
- Less than 1µA shutdown current (typ)
- PGOOD, Enable, Short-Circuit & Reverse Current Protection, & Over temperature Shutdown Capability
- Space saving 10-Ld 3x3 DFN package
- The current limit threshold of ISL80101A adjusted through a resister (Rset) see picture