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TPS54319RTER Datasheet(PDF) 1 Page - Texas Instruments |
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TPS54319RTER Datasheet(HTML) 1 Page - Texas Instruments |
1 / 35 page PH VIN POWERPAD BOOT VSENSE COMP TPS54319 EN RT /CLK 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 40 50 60 70 80 90 0 10 20 30 100 0 0.5 2 2.5 3 Output Current - A 1 1.5 5 Vin, 1.8 Vout 3.3 Vin,1.8 Vout TPS54319 www.ti.com SLVSA83 – JUNE 2010 2.95-V to 6-V Input, 3-A Output, 2-MHz, Synchronous Step-Down Switcher With Integrated FETs ( SWIFT™) Check for Samples: TPS54319 1 FEATURES DESCRIPTION 2 • Two 45-m Ω (typical) MOSFETs for High The TPS54319 device is a full featured 6 V, 3 A, Efficiency at 3-A Loads synchronous step down current mode converter with two integrated MOSFETs. • 300kHz to 2MHz Switching Frequency • 0.8 V ± 3.0% Voltage Reference Over The TPS54319 enables small designs by integrating the MOSFETs, implementing current mode control to Temperature (0°C to 85°C) reduce external component count, reducing inductor • Synchronizes to External Clock size by enabling up to 2 MHz switching frequency, • Adjustable Slow Start/Sequencing and minimizing the IC footprint with a small 3mm x • UV and OV Power Good Output 3mm thermally enhanced QFN package. • –40°C to 150°C Operating Junction The TPS54319 provides accurate regulation for a Temperature Range variety of loads with an accurate ±3.0% Voltage Reference (VREF) over temperature. • Thermally Enhanced 3mm × 3mm 16-pin QFN • Pin Compatible to TPS54318 Efficiency is maximized through the integrated 45m Ω MOSFETs and 360mA typical supply current. Using the enable pin, shutdown supply current is reduced to APPLICATIONS 2 µA by entering a shutdown mode. • Low-Voltage, High-Density Power Systems • Point-of-Load Regulation for Consumer Under voltage lockout is internally set at 2.6 V, but Applications such as Set Top Boxes, LCD can be increased by programming the threshold with Displays, CPE Equipment a resistor network on the enable pin. The output voltage startup ramp is controlled by the slow start pin. An open drain power good signal indicates the SIMPLIFIED SCHEMATIC output is within 93% to 107% of its nominal voltage. vertical spacer Frequency fold back and thermal shutdown protects vertical spacer the device during an over-current condition. The TPS54319 is supported in the SwitcherPro™ 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. 2 SWIFT, SwitcherPro are trademarks of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2010, 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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