Overview

The ISL80121-5 is a low dropout voltage, single output LDO with programmable current limiting. The ISL80121-5 operates from input voltages of 5V to 6V with a nominal output voltage of 5V. Other custom voltage options are available upon request. A submicron 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 BiCMOS 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.

ISL80121-5 Functional Diagram
ISL80121-5 Functional Diagram
  • ±1.8% VOUT accuracy guaranteed over line, load and TJ = -40°C to +125°C
  • Very low 130mV dropout voltage
  • High accuracy current limit programmable up to 1.75A
  • Very fast transient response
  • 210µVRMS output noise
  • Power-good output
  • Programmable soft-start
  • Over-temperature protection
  • Small 10 Ld DFN package

Applications

  • USB devices
  • Telecommunications and Networking
  • Medical Equipment
  • Instrumentation Systems
  • Routers and Switchers
  • Gaming

Documentation

= Featured Documentation
Type Title Date
Datasheet
ISL80121-5 Datasheet
PDF 727 KB 日本語
Product Change Notice
PCN20029A - Alternate bond wire material and assembly facility of the listed Renesas QFN packaged products
PDF 326 KB
Product Advisory
PA14042 - Minimum Line Quantity Change
PDF 363 KB
Product Change Notice
PCN12032 - Alternate Bond Wire Material for Assembly of the Listed Intersil DFN/QFN Packaged Products -Carsem (CAS) Ipoh, Malaysia
PDF 164 KB
Application Note
AN1681: Grounding Techniques
PDF 509 KB
Application Note
AN1684: Nonideality of Ground
PDF 397 KB
6 items

Design & Development

ISL80121-5EVAL2Z

Evaluation
Learn More

1A Ultra-Low Dropout Linear Regulator with Programmable Current Limiting Evaluation Board

The ISL80121-5EVAL2Z evaluation board is used to evaluate the ISL80121-5 low dropout linear regulator.

The ISL80121-5 is a low dropout voltage, single output LDO...

Featured Documents:
ISL80121-5 Datasheet

ECAD Models

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    		2033 Dec DFN Tube 3 1.041 Get Samples,
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