• Input voltage range: 0.5 V to 5.5 V
• 1.8-V minimum input voltage for start-up
• Output voltage setting range: 2.2 V to 5.5 V
• Two 12-mΩ (LS) / 18-mΩ (HS) MOSFETs
• 8-A valley switching current limit
• 94.7% efficiency at VIN = 3.6 V, VOUT = 5 V and
IOUT = 3 A
• 1-MHz switching frequency when VIN > 1.5 V and
0.6-MHz switching frequency when VIN < 1 V
• ±2.5% reference voltage accuracy over –40°C to
+125°C
• Pin-selectable auto PFM operation mode or forced
PWM operation mode at light load
• Pass-through mode when VIN > VOUT
• True disconnection between input and output
during shutdown
• Output overvoltage and thermal shutdown
protections
• Output short-circuit protection
• 2-mm × 2-mm VQFN 7-pin package