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TPS53819ARGTR
15 14 13CSD87350VIN
VIN
TGR
PGND
VIN
VOUT
VREG
SCL
DRVL
VREG
ADDR PGOODEN VBSTV3P3
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Design
TPS53819ASLUSB56A–NOVEMBER 2012–REVISED OCTOBER 2015
TPS53819A High-Performance, Eco-mode™, Single Synchronous
Step-Down Controller with PMBus™ Features 2 Applications Conversion Input Voltage Range:3Vto28V • Point-of-Load PowerIn: VDD Input Voltage Range: 4.5Vto28V – Storage Computers Output Voltage Range: 0.6Vto 5.5V – Server Computers SupportsAll Ceramic Output Capacitors – Multi-Function Printers Reference Voltage: 600 mV ±0.5% Tolerance – Embedded Computing ±9% Voltage Adjustment via PMBus™
3 Description• Built-in 5-V LDO
The TPS53819A deviceisa small-sized, single buck• D-CAP2™ Mode with 100-ns Load Step controller with adaptive on-time D-CAP2 mode controlResponse and PMBus. The deviceis suitable for low output• Auto-Skip Eco-mode™ for Light-Load Efficiency voltage and high current, system power rail,or similar
point-of-load (POL) power supplyin digital consumer• Adaptive On-Time Control Architecture With Eight
products. Small package with minimal pin-countSelectable Frequencies via PMBus saves space on the PCB, while the programmability• Supports Voltage Margining via PMBus and fault report via PMBus simplify the power supply• Programmable Soft-Start Time via PMBus design. The skip-mode at light-load condition
combined with strong gate drivers and low-side FET• Programmable Power-On Delay via PMBus
on-resistance (RDS(on)) current sensing can• Programmable VDD UVLO Level via PMBus low-loss and high efficiency operation, over• Fault Report via PMBus load range. The conversion input voltage, Pre-Charged Start-Up Capability the high-side FET drain voltage, ranges fromV. The supply voltage (VDD)is from 4.5• Built-In Output Discharge The output voltage ranges from 0.6Vto• Power Good Output With Programmable Delay deviceis availableina 16-pin, QFN package• Internal Overvoltage, Undervoltage, and specified from –40°Cto 85°C.
Overcurrent Limit Protections
Device Information(1)• Thermal Shutdown (Non-Latch)• 3 mm×3 mm, 16-pin, QFN Package
(1) Forall available packages, see the orderable
the endofthe datasheet.
Simplified Application
