Features for the TPS549D22

• Input Voltage Range (PVIN): 1.5 V to 16 V
• Input Bias Voltage (VDD) Range: 4.5 V to 22 V
• Output Voltage Range: 0.6 V to 5.5 V
• Integrated, 2.9-mΩ and 1.2-mΩ Power MOSFETs With 40-A Continuous Output Current
• Voltage Reference 0.6 V to 1.2 V in 50-mV Steps Using VSEL Pin
• ±0.5%, 0.9-VREF Tolerance Range: –40°C to +125°C Junction Temperature
• True Differential Remote Sense Amplifier
• D-CAP3™ Control Loop
• Adaptive On-Time Control with 8 PMBusTM Frequency: 315 kHz, 425 kHz, 550 kHz, 650 kHz, 825 kHz, 900 kHz, 1.025 MHz, 1.125 MHz
• Temperature Compensated and Programmable Current Limit with RILIM and OC Clamp
• Choice of Hiccup or Latch-Off OVP or UVP
• VDD UVLO External Adjustment by Precision EN
• Prebias Start-up Support
• Eco-mode™ and FCCM Selectable
• Full Suite of Fault Protection and PGOOD
• Standard VOUT_COMMAND and VOUT_MARGIN (HIGH and LOW)
• Pin-Strapping and On-the-Fly Programming
• Fault Reporting and Warning
• NVM Backup for Selected Commands
• 1-MHz PMBus with PEC and SMB_ALRT#

Description for the TPS549D22

The TPS549D22 device is a compact single buck converter with adaptiveon-time, D-CAP3 mode control. It is designed for high accuracy, high efficiency, fast transientresponse, ease-of-use, low external component count and space-conscious power systems.

This device features full differential sense, TI integrated FETs with a high-sideon-resistance of 2.9 mΩ and a low-side on-resistance of1.2 mΩ. The device also features accurate 0.5%, 0.9-V referencewith an ambient temperature range between –40°C and +125°C. Competitive features include: very lowexternal component count, accurate load regulation and line regulation, auto-skip or FCCMmode operation, and internal soft-start control.

The TPS549D22 device is available in 7-mm × 5-mm, 40-pin, LQFN-CLIP(RVF) package (RoHs exempt).