TPS630252 Series

4A switch Single-Inductor Buck-Boost Converter in WCSP

Catalog

4A switch Single-Inductor Buck-Boost Converter in WCSP

Part	Package / Case	Function	Frequency - Switching	Output Configuration	Mounting Type	Current - Output	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Input (Max) [Max]	Voltage - Input (Min) [Min]	Number of Outputs	Voltage - Output (Min/Fixed)	Topology	Synchronous Rectifier	Output Type
Texas Instruments TPS630252YFFT	20-UFBGA DSBGA	Step-Up/Step-Down	2.5 MHz	Positive	Surface Mount	3.5 A	20-DSBGA	85 °C	-40 °C	5.5 V	2.3 V	1	3.3 V	Buck-Boost		1.81 mOhm

Catalog

4A switch Single-Inductor Buck-Boost Converter in WCSP

Key Features

• Real Buck or Boost Operation with Automatic andSeamless Transition Between Buck and BoostOperation2.3 V to 5.5 V input voltage range2 A Continuous Output Current : VIN≥ 2.5 V,VOUT= 3.3 VAdjustable and Fixed Output VoltageEfficiency up to 95% in Buck or Boost Mode andup to 97% when VIN=VOUT2.5MHz Typical Switching Frequency35-µA Operating Quiescent CurrentIntegrated Soft StartPower Save ModeTrue Shutdown FunctionOutput Capacitor Discharge FunctionOver-Temperature Protection and Over-CurrentProtectionWide Capacitance SelectionSmall 1.766 mm × 2.086 mm, 20-pin WCSP and2.5 mm × 3 mm, 14-pin Hot RodReal Buck or Boost Operation with Automatic andSeamless Transition Between Buck and BoostOperation2.3 V to 5.5 V input voltage range2 A Continuous Output Current : VIN≥ 2.5 V,VOUT= 3.3 VAdjustable and Fixed Output VoltageEfficiency up to 95% in Buck or Boost Mode andup to 97% when VIN=VOUT2.5MHz Typical Switching Frequency35-µA Operating Quiescent CurrentIntegrated Soft StartPower Save ModeTrue Shutdown FunctionOutput Capacitor Discharge FunctionOver-Temperature Protection and Over-CurrentProtectionWide Capacitance SelectionSmall 1.766 mm × 2.086 mm, 20-pin WCSP and2.5 mm × 3 mm, 14-pin Hot Rod

Description

The TPS63025x are high efficiency, low quiescent current buck-boost converters suitable for application where the input voltage is higher or lower than the output. Output currents can go as high as 2 A in boost mode and as high as 4 A in buck mode. The maximum average current in the switches is limited to a typical value of 4 A. The TPS63025x regulates the output voltage over the complete input voltage range by automatically switching between buck or boost mode depending on the input voltage ensuring a seamless transition between modes. The buck-boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain highest efficiency. At low load currents, the converter enters Power Save Mode to maintain high efficiency over the complete load current range. There is a PFM/PWM pin that allows the user to choose between automatic PFM/PWM mode operation and forced PWM operation. During PWM mode a fixed-frequency of typically 2.5 MHz is used. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is packaged in a 20-pin WCSP package measuring 1.766 mm × 2.086mm and 14-pin HotRod package measuring 2.5 mm × 3mm. The TPS63025x are high efficiency, low quiescent current buck-boost converters suitable for application where the input voltage is higher or lower than the output. Output currents can go as high as 2 A in boost mode and as high as 4 A in buck mode. The maximum average current in the switches is limited to a typical value of 4 A. The TPS63025x regulates the output voltage over the complete input voltage range by automatically switching between buck or boost mode depending on the input voltage ensuring a seamless transition between modes. The buck-boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain highest efficiency. At low load currents, the converter enters Power Save Mode to maintain high efficiency over the complete load current range. There is a PFM/PWM pin that allows the user to choose between automatic PFM/PWM mode operation and forced PWM operation. During PWM mode a fixed-frequency of typically 2.5 MHz is used. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is packaged in a 20-pin WCSP package measuring 1.766 mm × 2.086mm and 14-pin HotRod package measuring 2.5 mm × 3mm.