Texas Instruments TPS53819A

Description

TPS53819A is a small-sized, single buck controller with adaptive on-time D-CAP2 mode control and PMBus. The device is suitable for low output voltageand high current, system power rail, or similar pointof-load (POL) power supply in digital consumer products. Small package with minimal pin-countsaves 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 RDS(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 FETdrain voltage, ranges from 3 V to 28 V. The supply voltage (VDD) for TPS53819A is from 4.5 V to 28 V. The output voltage ranges from 0.6 V to 5.5 V. The TPS53819A is available in a 16-pin, QFN package and is specified from –40°C to 85°C.

Features

• Conversion Input Voltage Range: 3 V to 28 V
• VDD Input Voltage Range: 4.5 V to 28 V
• Output Voltage Range: 0.6 V to 5.5 V
• Supports All Ceramic Output Capacitors
• Reference Voltage: 600 mV ±0.5% Tolerance
• ±9% Voltage Adjustment via 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 via PMBus
• Supports Voltage Margining via PMBus
• Programmable Soft-Start Time via PMBus
• Programmable Power-On Delay via PMBus
• Programmable VDD UVLO Level via PMBus
• Fault Report via 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

Typical applications

• Point-of-Load Systems
• Multi-Function Printers
• Storage Computers
• Embedded Computing
• Server Computers

More information

• Datasheet
• IC product information