TPS53219A 3V to 28V Input, 20A, Eco-Mode™, D-CAP™ Synchronous Buck Controller |

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3V to 28V Input, 20A, Eco-Mode™, D-CAP™ Synchronous Buck Controller



The TPS53219A device is a small-sized single buck controller with adaptive ON-time D-CAP mode control. The device is suitable for low output voltage, high current, PC system power rail and similar point-of-load (POL) power supplies in digital consumer products. The small package and minimal pin-count save space on the PCB, while the dedicated EN pin and pre-set frequency selections simplify the power supply design. The skip mode at light load conditions, strong gate drivers, and low-side FET RDS(on) current sensing supports low-loss and high efficiency, over a broad load range. The conversion input voltage (high-side FET drain voltage) range is between 4.5 V and 25 V, and the output voltage range is between 0.6 V and 5.5 V. The TPS53219A is available in a 16-pin, QFN package specified from –40°C to +85°C.


  • Conversion input voltage range: 3 V to 28 V
  • VDD input voltage range: 4.5 V to 25 V
  • Output voltage range: 0.6 V to 5.5 V
  • Wide output load range: 0 A to > 20 A
  • Built-in 0.6-V (±0.8%) reference
  • Built-in LDO linear voltage regulator
  • Auto-skip Eco-Mode™ for light-load efficiency
  • D-CAP™ mode with 100-ns load-step response
  • Adaptive ON-time control architecture with 8 selectable frequency settings
  • 4700ppm/°C RDS(on) current sensing
  • 0.7-ms, 1.4-ms, 2.8-ms and 5.6-ms selectable internal voltage servo soft start
  • Pre-charged start-up capability
  • Built-in output discharge
  • Open-drain power-good output
  • Integrated boost switch
  • Built-In OVP/UVP/OCP
  • Thermal shutdown (non-latch)
  • 3-mm × 3-mm QFN, 16-Pin (RGT) package

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  Min   Max Range
Vin  V 4.5 to 24.0V
Vout  V 0.6 to 5.5V
Iout  A ≤ 25A
Ambient Temp  °C -40 to 85°C


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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Number of Phases Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Control mode
TPS53219A Order now 3     28     0.6     5.5     20     1     1     250     970     0.4     Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up    
90     -40 to 85     Catalog     VQFN | 16     Controller     D-CAP    
TPS53819A Order now 3     28     0.6     5.5     40     1     1     275     1000     0.92     Dynamic Voltage Scaling
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
90     -40 to 85     Catalog     VQFN | 16     Controller     D-CAP2