TPS53819A

• Conversion Input Voltage 3 V to 28 V
• VDD input voltage 4.5 V to 28 V
• Output voltage 0.6 V to 5.5 V
• Supports all ceramic output capacitors
• Reference voltage: 600 mV ±0.5% tolerance
• ±9% Voltage adjustment with PMBus™
• Built-in 5-V LDO
• D-CAP2™ mode with 100-ns load-step response
• Auto-skip Eco-mode™ for light-load efficiency
• Adaptive on-time control architecture with eight selectable frequencies using PMBus
• Supports voltage margining using PMBus
• Programmable soft-start time using PMBus
• Programmable power-on delay using PMBus
• Programmable VDD UVLO level using PMBus
• Fault report using PMBus
• Pre-charged start-up capability
• Built-In output discharge
• Power-good output with programmable delay
• Internal overvoltage, undervoltage, and overcurrent limit protections
• Thermal shutdown (non-latch)
• 3 mm × 3 mm, 16-pin, QFN package
• Create a custom design using the TPS53819A with the WEBENCH^® Power Designer

All trademarks are the property of their respective owners.

The TPS53819A device is a small-sized, single buck controller with adaptive on-time D-CAP2 mode control and PMBus. The device is suitable for low output voltage and high current, system power rail, or similar point-of-load (POL) power supply in digital consumer products. Small package with minimal pin-count saves space on the PCB, while the programmability and fault report via PMBus simplify the power supply design. The skip-mode at light-load condition combined with strong gate drivers and low-side FET on-resistance (R_DS(on)) current sensing can support low-loss and high efficiency operation, over a broad load range. The conversion input voltage, which is the high-side FET drain voltage, ranges from 3 V to 28 V. The supply voltage (VDD) is from 4.5 V to 28 V. The output voltage ranges from 0.6 V to 5.5 V. The device is available in a 16-pin, QFN package and is specified from –40°C to +85°C.