TPS61170 1.2A Switch, 38V High Voltage Boost Converter in 2x2mm QFN Package |

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1.2A Switch, 38V High Voltage Boost Converter in 2x2mm QFN Package



The TPS61170 is a monolithic, high-voltage switching regulator with integrated 1.2-A, 40-V power MOSFET. The device can be configured in several standard switching-regulator topologies, including boost and SEPIC. The device has a wide input-voltage range to support applications with input voltage from multicell batteries or regulated 5-V, 12-V power rails.

The TPS61170 operates at a 1.2-MHz switching frequency, allowing the use of low-profile inductors and low-value ceramic input and output capacitors. External loop compensation components give the user flexibility to optimize loop compensation and transient response. The device has built-in protection features, such as pulse-by-pulse overcurrent limit, soft start, and thermal shutdown.

The FB pin regulates to a reference voltage of 1.229 V. The reference voltage can be lowered using a 1-wire digital interface (Easyscale™ protocol) through the CTRL pin. Alternatively, a pulse width-modulation (PWM) signal can be applied to the CTRL pin. The duty cycle of the signal reduces the feedback reference voltage proportionally.

The TPS61170 is available in a 6-pin 2-mm × 2-mm QFN package, allowing a compact power-supply solution.


  • 3-V to 18-V Input Voltage Range
  • High Output Voltage: Up to 38 V
  • 1.2-A Integrated Switch
  • 1.2-MHz Fixed Switching Frequency
  • 12 V at 300 mA and 24 V at 150 mA From
    5-V Input (Typical)
  • Up to 93% Efficiency
  • Output Voltage Reprogramming
  • Skip-Switching Cycle for Output
    Regulation at Light Load
  • Built-in Soft Start
  • 6-Pin, 2-mm × 2-mm QFN Package

WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS61170

  Min   Max Range
Vin  V 3.0 to 18.0V
Vout  V 3 to 38V
Iout  A ≤ 1.2A
Ambient Temp  °C -40 to 125°C


Compare all products in Boost converters (integrated switch) Email Download to Excel
Part number Order 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) Features Duty cycle (Max) (%) Operating temperature range (C) Type Rating Package Group
TPS61170 Order now 3     18     3     38     1.2     1     1000     1200     2.3     Enable
Light Load Efficiency    
93     -40 to 85     Converter     Catalog     WSON | 6    
LM2621 Order now 1.2     14     1.24     14     2.85     1     2000     2000     0.08     Enable     80     -40 to 85     Converter     Catalog     VSSOP | 8    
LM2623 Order now 0.8     14     1.24     14     2.85     1     300     2000     0.08     Enable     90     -40 to 85     Converter     Catalog     VSSOP | 8
WSON | 14    
LM2731 Order now 2.7     14     1.23     22     1.5     1     600     1600     2     Enable     93     -40 to 125     Converter     Catalog     SOT-23 | 5    
LM27313 Order now 2.7     14     4     28     1.25     1     1150     1900     2.1     Enable
Light Load Efficiency    
88     -40 to 125     Converter     Catalog     SOT-23 | 5    
LM2733 Order now 2.7     14     3     40