Tiny Single Inductor Buck Boost Converter - TPS63050


Tiny Single Inductor Buck Boost Converter


The TPS63050/1 are high efficiency, low quiescent current buck-boost converters suitable for applications where the input voltage is higher or lower than the output. Output currents can go as high as 500mA in boost mode and as high as 1A in buck mode. The maximum average current in the switches is limited to a typical value of 1A. The TPS6305x regulates the output voltage over the complete input voltage range by automatically switching between buck or boost mode depending on the input voltage ensuring 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 2.5MHz 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 12-pin WCSP package measuring 1.6mm × 1.2mm).


  • Real Buck or Boost with Seamless
    Transition Between Buck and Boost Mode
  • 2.5V to 5.5V Input Voltage Range
  • 0.5A Continuous Output Current : VIN ≥ 2.5V,
  • Adjustable and Fixed Output Voltage Version
  • Efficiency >90% in Boost Mode and >95% in
    Buck Mode
  • 2.5MHz Typical Switching Frequency
  • Adjustable Average Input Current Limit
  • Adjustable Soft Start Time
  • Device Quiescent Current Less Than 50µA
  • Power Save Mode
  • Load Disconnect During Shutdown
  • Over-Temperature Protection
  • Small 1.6mm × 1.2mm, 12-pin WCSP package

View more

Parametrics Compare all products in Buck/Boost Converter

Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Control Mode
Soft Start
Regulated Outputs (#)
Special Features
Operating Temperature Range (C)
Market Segment
Approx. Price (US$)
TPS63050 TPS63051
2.5     2.5    
5.5     5.5    
2.5     3.3    
5.5     3.3    
Buck-Boost     Buck-Boost    
2500     2500    
2500     2500    
0.045     0.045    
Current Mode     Current Mode    
Adjustable     Adjustable    
1     1    
Adjustable Current Limit
Light Load Efficiency
Load Disconnect
Power Good    
Adjustable Current Limit
Light Load Efficiency
Load Disconnect
Power Good    
Catalog     Catalog    
-40 to 85     -40 to 85    
Consumer & Portable Electronics      
12DSBGA     12DSBGA    
0.82 | 1ku     0.82 | 1ku    

Featured tools and software

    Min   Max   Range  
  Vin V    2.50 – 5.50V  
  Vout V    2.50 – 5.50V  
  Iout A    ≤ 1A  
  Ambient Temp °C    -40 – 125°C  
Footprint BOM Cost Efficiency
'U1 Rfbb Rfbt Css L1 Cin Cout Coutx Rpg '
What are WEBENCH® tools?
Click Here