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TPS54519RTET Datasheet(PDF) 1 Page - Texas Instruments |
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TPS54519RTET Datasheet(HTML) 1 Page - Texas Instruments |
1 / 33 page PH VIN POWERPAD BOOT VSENSE COMP TPS54519 EN RT SS/TR PWRGD C ss R T R 3 C 1 C BOOT C O LO R 1 R 2 C I VOUT VIN AGND GND R4 R5 50 60 70 80 90 100 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 V = 1.2 V F OUT SW = 1MHz V = 5 V IN I - Load Current - A L V = 3 V IN TPS54519 www.ti.com SLVSAT3 – SEPTEMBER 2011 2.95 V to 6 V Input, 5-A Synchronous Step Down SWIFT Converter 1 FEATURES DESCRIPTION The TPS54519 device is a full featured 6 V, 5 A, • Two 30 m Ω (typical) MOSFETs for high synchronous step down current mode converter with efficiency at 5-A loads two integrated MOSFETs. • 200kHz to 2MHz Switching Frequency The TPS54519 enables small designs by integrating • 0.6 V ± 2% Voltage Reference Over the MOSFETs, implementing current mode control to Temperature reduce external component count, reducing inductor • Adjustable Slow Start / Sequencing size by enabling up to 2 MHz switching frequency, and minimizing the IC footprint with a small 3mm x • UV and OV Power Good Output 3mm thermally enhanced QFN package. • Low Operating and Shutdown Quiescent Current The TPS54519 provides accurate regulation for a variety of loads with an accurate ±2% Voltage • Safe Start-up into Pre-Biased Output Reference (VREF) over temperature. • Cycle by Cycle Current Limit, Thermal and Efficiency is maximized through the integrated 30m Ω Frequency Fold Back Protection MOSFETs and 350 μA typical supply current. Using • –40°C to 140°C Operating Junction the enable pin, shutdown supply current is reduced to Temperature Range 2 μA by entering a shutdown mode. • Thermally Enhanced 3mm × 3mm 16-pin QFN Under voltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with APPLICATIONS a resistor network on the enable pin. The output • Low-Voltage, High-Density Power Systems voltage startup ramp is controlled by the slow start pin. An open drain power good signal indicates the • Point of Load Regulation for High Performance output is within 93% to 107% of its nominal voltage. DSPs, FPGAs, ASICs and Microprocessors Frequency fold back and thermal shutdown protects • Broadband, Networking and Optical the device during an overcurrent condition. Communications Infrastructure The TPS54519 is supported in the SwitcherProTM SIMPLIFIED SCHEMATIC Software Tool at www.ti.com/switcherpro. For more SWIFTTM documentation, see the TI website at www.ti.com/swift. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2011, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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