4A switch Single-Inductor Buck-Boost Converter in WCSP - TPS630250

TPS630250 (ACTIVE)

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


The TPS63025 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 2A in boost mode and as high as 4A in buck mode. The maximum average current in the switches is limited to a typical value of 4A. The TPS63025 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 2.5MHz 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 20-pin WCSP package measuring 1.766 mm × 2.086mm.

For all available packages, see the orderable addendum at the end of the datasheet.


  • Real Buck or Boost operation with automatic and
    seamless transition between Buck and Boost operation
  • 2.3V to 5.5V input voltage range
  • 2A Continuous Output Current :
    VIN≥ 2.7V, VOUT= 3.3V
  • Adjustable and fixed output voltage
  • Efficiency up to 95% in Buck or Boost mode
    and up to 97% when VIN=VOUT
  • 2.5MHz typical switching frequency
  • 35μA operating quiescent current
  • Integrated Soft–Start
  • Power Save Mode
  • True shutdown function
  • Output capacitor discharge function
  • Over-Temperature Protection and Over
    current Protection
  • Wide capacitance selection
  • Small 1.766 mm × 2.086mm, 20-pin WCSP

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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
Regulated Outputs (#)
Special Features
Operating Temperature Range (C)
Market Segment
Approx. Price (US$)
TPS630250 TPS630251 TPS630252
2.3     2.3     2.3    
5.5     5.5     5.5    
2.3     2.9     3.3    
3.6     2.9     3.3    
Buck-Boost     Buck-Boost     Buck-Boost    
2500     2500     2500    
2500     2500     2500    
0.035     0.035     0.035    
Current Mode     Current Mode     Current Mode    
1     1     1    
Light Load Efficiency
Load Disconnect    
Light Load Efficiency
Load Disconnect    
Light Load Efficiency
Load Disconnect    
Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85    
Consumer & Portable Electronics     Consumer & Portable Electronics     Consumer & Portable Electronics    
20DSBGA     20DSBGA     20DSBGA    
1.75 | 1ku     1.75 | 1ku     1.75 | 1ku    

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All trademarks are the property of their respective owners.

    Min   Max   Range  
  Vin V    2.30 – 5.50V  
  Vout V    2.30 – 3.60V  
  Iout A    ≤ 4A  
  Ambient Temp °C    -40 – 125°C  
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