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TPS51916RUKR Datasheet(PDF) 1 Page - Texas Instruments |
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TPS51916RUKR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 34 page 12 17 16 6 15 14 13 11 V5IN TPS51916 S3 S5 VREF VBST DRVH SW DRVL 8 10 REFIN PGND 7 19 GND MODE 18 TRIP 20 9 2 3 PGOOD VDDQSNS VLDOIN VTT 1 4 5 VTTSNS VTTGND VTTREF UDG-10193 VDDQ VTT PGND S3 S5 PGND 5VIN PGND VIN VTTREF AGND AGND Powergood PGND TPS51916 www.ti.com SLUSAE1D – DECEMBER 2010 – REVISED JUNE 2012 Complete DDR2, DDR3 and DDR3L Memory Power Solution Synchronous Buck Controller, 2-A LDO, Buffered Reference 1 FEATURES DESCRIPTION The TPS51916 provides a complete power supply for 2 • Synchronous Buck Controller (VDDQ) DDR2, DDR3 and DDR3L memory systems in the – Conversion Voltage Range: 3 V to 28 V lowest total cost and minimum space. It integrates a – Output Voltage Range: 0.7 V to 1.8 V synchronous buck regulator controller (VDDQ) with a 2-A sink/source tracking LDO (VTT) and buffered low – 0.8% VREF Accuracy noise reference (VTTREF). The TPS51916 employs – Selectable Control Architecture D-CAP™ mode coupled with 300 kHz/400 kHz – D-CAP™ Mode for Fast Transient frequencies for ease-of-use and fast transient Response response or D-CAP2™ mode coupled with higher 500 kHz/670 kHz frequencies to support ceramic – D-CAP2™ Mode for Ceramic Output output capacitor without an external compensation Capacitors circuit. The VTTREF tracks VDDQ/2 within excellent – Selectable 300 kHz/ 400 kHz/ 500 kHz/ 0.8% accuracy. The VTT, which provides 2-A 670 kHz Switching Frequencies sink/source peak current capabilities, requires only – Optimized Efficiency at Light and Heavy 10- μF of ceramic capacitance. In addition, a dedicated LDO supply input is available. Loads with Auto-skip Function – Supports Soft-Off in S4/S5 States The TPS51916 provides rich useful functions as well as excellent power supply performance. It supports – OCL/OVP/UVP/UVLO Protections flexible power state control, placing VTT at high-Z in – Powergood Output S3 and discharging VDDQ, VTT and VTTREF (soft- • 2-A LDO(VTT), Buffered Reference(VTTREF) off) in S4/S5 state. Programmable OCL with low-side MOSFET RDS(on) sensing, OVP/UVP/UVLO and – 2-A (Peak) Sink and Source Current thermal shutdown protections are also available. – Requires Only 10- μF of Ceramic Output Capacitance The TPS51916 is available in a 20-pin, 3 mm × 3 mm, QFN package and is specified for ambient – Buffered, Low Noise, 10-mA VTTREF temperature from –40°C to 85°C. Output – 0.8% VTTREF, 20-mV VTT Accuracy – Support High-Z in S3 and Soft-Off in S4/S5 • Thermal Shutdown • 20-Pin, 3 mm × 3 mm, QFN Package APPLICATIONS • DDR2/DDR3/DDR3L Memory Power Supplies • SSTL_18, SSTL_15, SSTL_135 and HSTL Termination 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 D-CAP, D-CAP2 are trademarks of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2010–2012, 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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