28-V, 85% Efficient Boost Converter in QFN-8, Digitally Adjustable

28-V, 85% Efficient Boost Converter in QFN-8, Digitally Adjustable - TPS61045

Recommended alternative parts

  • TPS61046  -  For applications requiring smaller package or True Disconnection


The TPS61045 device is a high-frequency boost converter with digitally-programmable output voltage and true shutdown. During shutdown, the output is disconnected from the input by opening the internal input switch. This allows a controlled power-up and power-down sequencing of the display. The output voltage can be increased or decreased in digital steps by applying a logic signal to the CTRL pin. The output voltage range, as well as the output voltage step size, can be programmed with the feedback divider network. With a high switching frequency of up to 1 MHz, the TPS61045 device allows the use of small external components, and together, with the small 8-pin VSON package, a minimum system solution size is achieved.


  • Input Voltage Range from 1.8 to 6 V
  • Output Voltage of up to 28 V Possible
  • Up to 85% Efficiency
  • Digitally Adjustable Output Voltage Control
  • Disconnects Output From Input During Shutdown
  • Switching Frequency up to 1 MHz
  • No Load Quiescent Current 40 µA Typical
  • Thermal Shutdown Mode
  • Shutdown Current 0.1 µA Typical
  • Available in Small 3-mm × 3-mm VSON Package

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Parametrics Compare all products in Boost Converter (Integrated Switch)

Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Switch Current Limit (Typ) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Package Group
TPS61045 TPS61040 TPS61041 TPS61046 TPS61096A
1.8    1.8    1.8    1.8    1.8   
6    6    6    5.5    5.5   
1.8    1.8    1.8    4.5    4.5   
28    28    28    28    28   
  0.4    0.25    0.9    0.5   
      1    1   
1000    1000    1000    1250     
0.04    0.028    0.028    0.11    0.001   
Load Disconnect   
Enable    Enable    Enable
Light Load Efficiency
Load Disconnect   
Adjustable Current Limit
Light Load Efficiency   
88    88    88    90    90   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
Catalog    Catalog    Catalog    Catalog    Catalog   
SON    SOT-23
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WEBENCH® Designer TPS61045

  Min   Max Range
Vin  V 1.8 to 6.0V
Vout  V 1.8 to 28V
Iout  A ≤ 0.6A
Ambient Temp  °C -40 to 85°C

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