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