TPS51216RUKR

TPS51216 www.ti.com SLUSAB9A – NOVEMBER 2010 – REVISED APRIL 2013 Complete DDR2, DDR3 and DDR3L Memory Power Solution Synchronous Buck Controller, 2-A LDO, Buffered Reference Check for Samples: TPS51216 FEATURES DESCRIPTION • The TPS51216 provides a complete power supply for DDR2, DDR3 and DDR3L memory systems in the lowest total cost and minimum space. It integrates a synchronous buck regulator controller (VDDQ) with a 2-A sink/source tracking LDO (VTT) and buffered low noise reference (VTTREF). The TPS51216 employs D-CAP™ mode coupled with 300 kHz/400 kHz frequencies for ease-of-use and fast transient response. The VTTREF tracks VDDQ/2 within excellent 0.8% accuracy. The VTT, which provides 2A sink/source peak current capabilities, requires only 10-μF of ceramic capacitance. In addition, a dedicated LDO supply input is available. 1 2 • • • Synchronous Buck Controller (VDDQ) – Conversion Voltage Range: 3 V to 28 V – Output Voltage Range: 0.7 V to 1.8 V – 0.8% VREF Accuracy – D-CAP™ Mode for Fast Transient Response – Selectable 300 kHz/400 kHz Switching Frequencies – Optimized Efficiency at Light and Heavy Loads with Auto-skip Function – Supports Soft-Off in S4/S5 States – OCL/OVP/UVP/UVLO Protections – Powergood Output 2-A LDO(VTT), Buffered Reference(VTTREF) – 2-A (Peak) Sink and Source Current – Requires Only 10-μF of Ceramic Output Capacitance – Buffered, Low Noise, 10-mA VTTREF 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 The TPS51216 provides rich useful functions as well as excellent power supply performance. It supports flexible power state control, placing VTT at high-Z in S3 and discharging VDDQ, VTT and VTTREF (softoff) in S4/S5 state. Programmable OCL with low-side MOSFET RDS(on) sensing, OVP/UVP/UVLO and thermal shutdown protections are also available. The TPS51216 is available in a 20-pin, 3 mm × 3 mm, QFN package and is specified for ambient temperature from –40°C to 85°C. VIN 5VIN PGND APPLICATIONS • • DDR2/DDR3/DDR3L Memory Power Supplies SSTL_18, SSTL_15, SSTL_135 and HSTL Termination PGND TPS51216 VBST 15 12 V5IN S3 17 S3 S5 16 S5 VDDQ DRVH 14 SW 13 DRVL 11 6 VREF PGND 10 PGOOD 20 8 7 REFIN GND 19 MODE 18 TRIP AGND VDDQSNS 9 VLDOIN 2 VTT 3 VTTSNS 1 VTTGND 4 VTTREF 5 Powergood VTT VTTREF AGND PGND UDG-10138 1 2 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. D-CAP is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2010–2013, Texas Instruments Incorporated TPS51216 SLUSAB9A – NOVEMBER 2010 – REVISED APRIL 2013 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. ORDERING INFORMATION (1) ORDERABLE DEVICE NUMBER TA PACKAGE –40°C to 85°C Plastic Quad Flat Pack (20 pin QFN) (1) TPS51216RUKR TPS51216RUKT PINS 20 OUTPUT SUPPLY MINIMUM QUANTITY Tape and reel 3000 Mini reel 250 For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. ABSOLUTE MAXIMUM RATINGS (1) over operating free-air temperature range (unless otherwise noted) VALUE MAX VBST –0.3 36 VBST (3) –0.3 6 SW Input voltage range (2) –5 30 VLDOIN, VDDQSNS, REFIN –0.3 3.6 VTTSNS –0.3 3.6 PGND, VTTGND –0.3 0.3 V5IN, S3, S5, TRIP, MODE –0.3 6 –5 36 DRVH (3) –0.3 6 DRVH (3) (duty cycle < 1%) –2.5 6 VTTREF, VREF –0.3 3.6 VTT –0.3 3.6 DRVL –0.3 6 DRVL (duty cycle < 1%) –2.5 6 PGOOD –0.3 6 DRVH Output voltage range (2) Junction temperature range, TJ Storage temperature range, TSTG (1) (2) (3) UNIT MIN –55 V V 125 °C 150 °C Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. All voltage values are with respect to the network ground terminal unless otherwise noted. Voltage values are with respect to the SW terminal. THERMAL INFORMATION THERMAL METRIC TPS51216 QFN (20) PINS θJA Junction-to-ambient thermal resistance 94.1 θJCtop Junction-to-case (top) thermal resistance 58.1 θJB Junction-to-board thermal resistance 64.3 ψJT Junction-to-top characterization parameter 31.8 ψJB Junction-to-board characterization parameter 58.0 θJCbot Junction-to-case (bottom) thermal resistance 5.9 2 Submit Documentation Feedback UNITS °C/W Copyright © 2010–2013, Texas Instruments Incorporated Product Folder Links :TPS51216 TPS51216 www.ti.com SLUSAB9A – NOVEMBER 2010 – REVISED APRIL 2013 RECOMMENDED OPERATING CONDITIONS MIN Supply voltage 5.5 VBST –0.1 33.5 VBST (1) –0.1 5.5 -3 28 SW (2) –4.5 28 VLDOIN, VDDQSNS, REFIN –0.1 3.5 VTTSNS –0.1 3.5 PGND, VTTGND –0.1 0.1 S3, S5, TRIP, MODE –0.1 5.5 –3 33.5 DRVH Output voltage range TA (1) (2) MAX 4.5 SW Input voltage range TYP V5IN DRVH (1) –0.1 5.5 DRVH (2) –4.5 33.5 VTTREF, VREF –0.1 3.5 VTT –0.1 3.5 DRVL –0.1 5.5 PGOOD –0.1 5.5 Operating free-air temperature –40 85 UNIT V V V °C Voltage values are with respect to the SW terminal. This voltage should be applied for less than 30% of the repetitive period. Submit Documentation Feedback Copyright © 2010–2013, Texas Instruments Incorporated Product Folder Links :TPS51216 3 TPS51216 SLUSAB9A – NOVEMBER 2010 – REVISED APRIL 2013 www.ti.com ELECTRICAL CHARACTERISTICS over operating free-air temperature range, VV5IN=5V, VLDOIN is connected to VDDQ output, VMODE=0V, VS3=VS5=5V (unless otherwise noted) PARAMETER TEST CONDITION MIN TYP MAX UNIT SUPPLY CURRENT μA IV5IN(S0) V5IN supply current, in S0 TA = 25°C, No load, VS3 = VS5 = 5 V 590 IV5IN(S3) V5IN supply current, in S3 TA = 25°C, No load, VS3 = 0 V, VS5 = 5 V 500 IV5INSDN V5IN shutdown current TA = 25°C, No load, VS3 = VS5 = 0 V 1 μA IVLDOIN(S0) VLDOIN supply current, in S0 TA = 25°C, No load, VS3 = VS5 = 5 V 5 μA IVLDOIN(S3) VLDOIN supply current, in S3 TA = 25°C, No load, VS3 = 0 V, VS5 = 5 V 5 μA IVLDOINSDN VLDOIN shutdown current TA = 25°C, No load, VS3 = VS5 = 0 V 5 μA V μA VREF OUTPUT IVREF = 30 μA, TA = 25°C VVREF Output voltage IVREFOCL Current limit 1.8000 0 μA ≤ IVREF