Overview
Description
The ISL80505 is a single output Low Dropout voltage regulator (LDO) capable of sourcing up to 500mA output current. This LDO operates from input voltages of 1.8V to 6V. The output voltage of ISL80505 can be programmed from 0.8V to 5.5V. A submicron BiCMOS process is utilized for this product family to deliver the best in class analog performance and overall value. This CMOS LDO consumes significantly lower quiescent current as a function of load compared to bipolar LDOs, which translates into higher efficiency and packages with smaller footprints. State-of-the-art internal compensation achieves a very fast load transient response and excellent PSRR. The ISL80505 provides an output accuracy of ±1.8% VOUT accuracy over all load, line and temperature variations (TJ = -40°C to +125°C). An external capacitor on the soft-start pin provides an adjustable soft starting of the output voltage ramp to control the inrush current. The ENABLE feature allows the part to be placed into a low quiescent current shutdown mode.
Features
- ±1.8% VOUT accuracy guaranteed over line, load, and TJ = -40°C to +125°C
- Very low 45mV dropout voltage at VOUT = 2.5V
- Stable with a 4.7µF output ceramic capacitor
- Very fast transient response
- Programmable output soft-start time
- Excellent PSRR over wide frequency range
- Current limit protection
- Thermal shutdown function
- Available in an 8 Ld DFN package
- Pb-free (RoHS compliant)
Comparison
Applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 1007 KB | |
| Brochure | PDF 12.71 MB 日本語 | |
| Brochure | PDF 6.07 MB | |
| Product Change Notice | PDF 169 KB | |
| White Paper | PDF 3.36 MB 简体中文 | |
| Product Change Notice | PDF 326 KB | |
| Application Note | PDF 509 KB | |
| Application Note | PDF 397 KB | |
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Design & Development
Support
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Support Communities
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ISL80505 Vin Vout gap
HI I wonder how many voltage age can apply on ISL80505? Can I do Vin=3.3V Vout=3.0V on it? and what is the Vin on the left graph
May 22, 2025 -
Suggestion
Hello, in the Renesas product, I'm finding a programmable voltage regulator IC with an adjustable voltage of 0–5V for I2C, SPI, or UART interface. I was unable to locate this kind of IC. Voltage resolution +/- 1 mV and output <= 200 mA are the specifications. Could you recommend ...
Oct 4, 2024
FAQs
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Do the ISL80505 and ISL80510 have current limit protection and thermal shutdown functions?
Question: Do these parts have current limit protection and thermal shutdown functions? Answer: Yes, they both have these features. Current Limit Protection: These LDOs incorporates protection against overcurrent due to any short or overload condition applied to the output pin. The LDO performs as a constant current source when the ...
Jan 1, 1970 -
Do I need to 2 separate capacitors on both VIN pins and also on both VOUT pins on the ISL80505 and ISL80510?
Question: On these parts there are 2 VIN pins (pins 7 and 8) and 2 VOUT pins (pins 1 and 2). Do I need a capacitor on each one of these pins for a total of 4 capacitors, or do I just need a one capacitor for both VIN pins ...
Jan 1, 1970 -
What is the purpose of adjustable soft-start feature on the ISL80505 and ISL80510?
Question: One of the features of these parts is adjustable or programmable soft-start. What is the purpose of this? Answer: An adjustable soft-start with monotonic start-up ramp provides safe start-up for sensitive loads. The soft-start circuit controls the rate at which the output voltage rises ...
Jan 1, 1970