The TPS6307x is a high efficiency, low quiescent current buck-boost converter suitable for applications where the input voltage can be higher or lower than the output voltage. Output currents can go as high as 2 A in boost mode and in buck mode. The buck-boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters Power Save Mode to maintain high efficiency over a wide load current range. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is available in a 2.5 mm x 3 mm QFN package.

• Input Voltage Range: 2.0 V to 16 V

• Output Voltage Range: 2.5 V to 9 V

• Up to 95% Efficiency

• +/- 1% dc accuracy in PWM mode

• +3% / -1% dc accuracy in PFM mode

• 2 A Output Current in Buck Mode

• 2 A Output Current in Boost Mode
  (VIN = 4 V; Vout = 5 V)

• Precise ENABLE input allows

• user defined undervoltage lockout

• exact sequencing

• Automatic Transition Between Step Down and Boost Mode

• Typical Device Quiescent Current: 50 μA

• Fixed and Adjustable Output Voltage Options

• Output Discharge Option

• Power Save Mode for Improved Efficiency at Low Output Power

• Forced Fixed Frequency Operation at 2.4 MHz and Synchronization Option

• Power Good Output

• VSEL simply allows output voltage change

• Load Disconnect During Shutdown

• Overtemperature Protection

• Input / Output Overvoltage Protection

• Available in QFN Package