onsemi FAN48623UC50GX

The FAN48623 allows systems to take advantage of new battery chemistries that can supply significant energy when the battery voltage is lower than the required voltage for system power ICs. By combining built−in power transistors, synchronous rectification, and low supply current, this IC provides a compact solution for systems using advanced Li−Ion battery chemistries. The FAN48623 is a boost regulator designed to provide a minimum output voltage from a single−cell Li−Ion battery, even when the battery voltage is below system minimum. The output voltage regulation is guaranteed up to a maximum load current of 2500 mA. The regulator transitions smoothly between Bypass and normal Boost Mode. The device can be forced into Bypass Mode to reduce quiescent current. The FAN48623 is available in a 16−bump, 0.4 mm pitch, Wafer−Level Chip−Scale Package (WLCSP).

• Maximum Continuous Load Current: 2500 mA at VIN of 2.5 V Boosting VOUT to 3.3 V
• Maximum Pulse Load Current of 3.5 A for GSM PAs (1 Slot) and PMIC Support Simultaneously, VIN = 3.1 V, VOUT = 3.4 V
• Up to 97% Efficient
• 4 External Components: 2520 case 0.47 μH Inductor and 0603 Case Size Input and Output Capacitors
• Input Voltage Range: 2.5 V to 5.5 V
• Fixed Output Voltage Options: 3.0 V to 5.0 V
• True Bypass Operation when VIN > Target VOUT
• Integrated Synchronous Rectifier
• True Load Disconnect
• Forced Bypass Mode
• VSEL Control to Optimize Target VOUT
• Short−Circuit Protection (SCP)
• Low Operating Quiescent Current
• 16−Bump, 1.81 mm x 1.81 mm, 0.4 mm Pitch, WLCSP
• This is a Pb−Free Device

• Boost for Low−Voltage Li−ion Batteries, Brownout Prevention, System PMIC LDOs Supplies, and 2G/3G/4G RF PA Supplies
• Smart Phones, Tablets, Portable Devices