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.

Features
• 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)

Applications
• Automotive
• Industrial
• Telecommunications