NOTICE - The following device(s) are recommended alternatives:

The ISL80138 is a high voltage, adjustable VOUT low quiescent current linear regulator ideally suited for “always-on” and “keep alive” applications. The ISL80138 operates from an input voltage of +6V to +40V under normal operating conditions and consumes only 18µA of quiescent current at no load. The ISL80138 features an EN pin that can be used to put the device into a low-quiescent current shutdown mode where it draws only 2µA of supply current. The device features over-temperature shutdown and current limit protection. The ISL80138 is rated to operate across the -40°C to +125°C temperature range and is available in a 14 lead HTSSOP with an exposed pad package.


  • Wide VIN range of 6V to 40V
  • Adjustable output voltage from 2.5V to 12V
  • Ensured 150mA output current
  • Ultra low 18µA typical quiescent current
  • Low 2µA of typical shutdown current
  • ±1% accurate voltage reference (over temperature, load)
  • Low dropout voltage of 295mV at 150mA
  • Low 26µVRMS noise
  • 40V tolerant logic level (TTL/CMOS) enable input
  • Stable operation with 10µF output capacitor
  • 5kV ESD HBM rated
  • Thermal shutdown and current limit protection
  • Thermally enhanced 14 Ld exposed pad HTSSOP package


  • Industrial
  • Telecommunications

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active TSSOP-EP Tube 960
Active TSSOP-EP Reel 2500
Active TSSOP-EP Reel 250


Title language Type Format File Size Date
Datasheets & Errata
ISL80138 Datasheet 日本語 Datasheet PDF 786 KB
User Guides & Manuals
ISL8013xEVAL1Z User Guide Manual PDF 610 KB
Application Notes & White Papers
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
PCN16009 - ISL80138 Datasheet Change - Dropout Voltage e-table change Product Change Notice PDF 418 KB
ISL80138EVAL1Z Design Files PCB Design Files ZIP 693 KB


Title language Type Format File Size Date
ISL80138EVAL1Z Design Files PCB Design Files ZIP 693 KB

Boards & Kits

Part Number Title Type Company
ISL80138EVAL1Z 40V, Low Quiescent Current, 50mA/150mA Linear Regulator Evaluation Board Evaluation Renesas