TPS53219A - Texas Instruments

TPS53219A 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 pointof-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-s.

Features

•1 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-d.