The ISL78301 is a high voltage, low quiescent current linear regulator ideally suited for “always-on” and “keep alive” automotive applications. The ISL78301 operates from an input voltage of +6V to +40V under normal operating conditions and operates down to +3V under a cold crank. It consumes only 18µA of quiescent current at no load on the adjustable version. The ISL78301 is available in a fixed 3. 3V, 5V and adjustable output voltage (2. 5V to 12V) options. It 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 ISL78301 is AEC-Q100 qualified. It is rated over the -40°C to +125°C automotive temperature range and is available in a 14 Ld HTSSOP with an exposed pad package.


  • Optimized for "always-on" automotive applications
  • 18µA typical quiescent current
  • Guaranteed 150mA output current
  • Operates through cold crank down to 3V
  • 40V tolerant logic level (TTL/CMOS) enable input
  • 2µA of typical shutdown current
  • Low dropout voltage of 295mV at 150mA
  • Fixed +3.3V, +5.0V and adjustable output voltage options
  • Stable operation with 10µF output capacitor
  • Thermal shutdown and current limit protection
  • -40°C to +125°C operating temperature range
  • Thermally enhanced 14 Ld exposed pad HTSSOP package
  • AEC-Q100 Qualified
  • 5kV ESD HBM Rated
  • Pb-Free (RoHS Compliant)




  • Automotive
  • Industrial
  • Telecommunications


Type Title Date
Datasheet PDF 640 KB
Brochure PDF 5.49 MB 日本語
Application Note PDF 509 KB
Application Note PDF 397 KB
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