The TPS53819AEVM-123 device is a small-sized, single buck controller with adaptive on-timeD-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. Smallpackage with minimal pin-count saves space on the PCB, while the programmability and fault reportvia PMBus simplify the power supply design. The skip-mode at light-load condition combined withstrong gate drivers and low-side FET on-resistance (RDS(on)) current sensingcan support low-loss and high efficiency operation, over a broad load range. The conversion inputvoltage, 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 availablein a 16-pin, QFN package and is specified from –40°C to +85°C.
Feature
- 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
