The FAN5370X is a Super Low Iq, step−down switching voltage regulator, that delivers a fixed output from an input voltage supply of 2.3 V to 5.5 V. Using a proprietary architecture with synchronous rectification, the FAN5370X is capable of delivering a peak efficiency of 93%, while maintaining efficiency over 90% at load currents as low as 1 mA.

• 2μA Typical Quiescent Current
• 5.5mm2 total solution size
• 1.0 A Output Current Capability
• 0.6 V to 3.3 V Fixed Output Voltage
• 2.3 V to 5.5 V Input Voltage Range
• Best−in−Class Load Transient Response
• Best−in−Class Efficiency with Sub 1 mA Output Currents
• Internal Soft−Start Limits Battery Current Below 150 mA to Avoid
• Brown−out Scenarios
• Protection Faults (UVLO, OCP and OTP)
• Thermal Shutdown and Overload Protection