TPS63806

• Two pin-2-pin device options, TPS63805 and TPS63806 with specific application focus
• Input voltage range: 1.3 V to 5.5 V
  • Device input voltage > 1.8 V for start-up
• Output voltage range: 1.8 V to 5.2 V (adjustable)
• High efficiency over the entire load range
  • Power save mode and mode selection for forced PWM-mode
• Peak current buck-boost mode architecture
  • Defined transition points between buck, buck-boost, and boost operation modes
  • Forward and reverse current operation
  • Start-up into pre-biased outputs
• Safety and robust operation features
  • Integrated soft start
  • Overtemperature- and overvoltage-protection
  • True shutdown function with load disconnect
  • Forward and backward current limit
• TPS63805
  • Optimized for smallest solution size of 18.5 mm² (works with a 22-µF minimum output capacitor)
  • 2-A output current for V_I ≥ 2.3 V, V_O = 3.3 V
  • 11-µA operating quiescent current
• TPS63806
  • Optimized for best load step response (180-mV load-step response at a 2 A current step)
  • Up to 2.5-A transient output current
  • 13-µA operating quiescent current

All trademarks are the property of their respective owners.

The TPS63805 and TPS63806 are high efficiency, high output current buck-boost converters. Depending on the input voltage, they automatically operate in boost, buck, or in a novel 4-cycle buck-boost mode when the input voltage is approximately equal to the output voltage. The transitions between modes happen at defined thresholds and avoid unwanted toggling within the modes to reduce output voltage ripple. The device output voltages are individually set by a resistive divider within a wide output voltage range. The TPS63805 achieves the lowest solution size with a tiny bill of materials. An 11-µA quiescent current enables the highest efficiency for little to no-load conditions.