18.5V PFM/PWM High Efficiency Step-Up DC-DC Converter with 2.0 A Switch

18.5V PFM/PWM High Efficiency Step-Up DC-DC Converter with 2.0 A Switch - TPS61086


The TPS61086 device is a high-frequency, high-efficiency DC-to-DC converter with an integrated 2.0-A, 0.13-Ω power switch capable of providing an output voltage up to 18.5 V. The implemented boost converter is based on a fixed frequency of 1.2-MHz, pulse-width-modulation (PWM) controller that allows the use of small external inductors and capacitors and provides fast transient response.

At light-load, the device can operate in Power Save Mode with pulse-frequency-modulation (PFM) to improve the efficiency while keeping a low-output voltage ripple. For very noise-sensitive applications, the device can be forced to PWM Mode operation over the entire load range by pulling the MODE pin high. The external compensation allows optimizing the application for specific conditions. A capacitor connected to the soft-start pin minimizes inrush current at start-up.


  • 2.3-V to 6.0-V Input Voltage Range
  • 18.5-V Boost Converter With 2.0-A Switch Current
  • 1.2-MHz Switching Frequency
  • Power Save Mode for Improved Efficiency at Low-
    Output Power or Forced PWM
  • Adjustable Soft-Start
  • Thermal Shutdown
  • Undervoltage Lockout
  • 10-Pin 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
TPS61086 TPS61085 TPS61085T TPS61087
2.3    2.3    2.3    2.5   
6    6    6    6   
2.8    2.8    2.8    3   
18.5    18.5    18.5    18.5   
2.6    2.6    2.6    4   
1    1    1    1   
900    480    480    900   
1500    1500    1500    1500   
0.07    0.07    0.07    0.075   
Light Load Efficiency
Power Good   
Frequency Synchronization    Enable
Frequency Synchronization   
Frequency Synchronization
Power Good   
90    90    90    90   
-40 to 85    -40 to 85    -40 to 105    -40 to 85   
Catalog    Catalog    Catalog    Catalog   
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WEBENCH® Designer TPS61086

  Min   Max Range
Vin  V 2.3 to 6.0V
Vout  V 2.8 to 18.5V
Iout  A ≤ 2.6A
Ambient Temp  °C -40 to 125°C

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