The ISL78307 is a high voltage, low quiescent current linear
regulator ideally suited for “always-on” and “keep alive”
automotive applications. The ISL78307 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 ISL78307 is available in 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 1.8µA of supply current. The device
features over-temperature shutdown and current limit protection.
The ISL78307 is AEC-Q100 qualified. It is rated over the -40°C to
+125°C automotive temperature range and is available in an
8 Ld EPSOIC with exposed pad package.

Features
• Optimized for “always-on” automotive applications
• 18µA typical quiescent current
• Guaranteed 50mA output current
• Operates through cold crank down to 3V
• 40V tolerant logic level (TTL/CMOS) enable input
• 1.8µA of typical shutdown current
• Low dropout voltage of 120mV at 50mA
• 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 8 Ld exposed pad SOIC package
• AEC-Q100 qualified
• 6kV ESD HBM rated
• Pb-free (RoHS compliant)

Applications
• Automotive
• Industrial
• Telecom