UNISONIC TECHNOLOGIES CO., LTD UR6515A LINEAR INTEGRATED CIRCUIT 3A DDR BUS TERMINATION REGULATOR DESCRIPTION The UR6515A is a linear regulator providing up to 3A transient peak current sourcing and sinking capability for DDR SDRAM bus terminator applications while regulating an output voltage to within 40mV. It contains a high speed operational amplifier which provides fast load transient response and only requires 10uF of ceramic output capacitance. The UR6515A output termination voltage tracks the reference voltage applied at VREF pin. A resistor divider connected to VIN, GND and VREF pins is used to force the reference voltage to VREF pin. Additional features include current limiting protection and thermal shutdown protection. 1 TO-252-5 1 TO-263-5 FEATURES *DDR1/ DDR2 termination voltage applications *Low output voltage offset within 20mV *Source and sink 3A peak current *Adjustable output voltage by external resistors *Integrated power MOS devices *Suspend to RAM(STR) functionality *Current Limiting Protection *Thermal Shutdown Protection *Cost-effective and easy to use ORDERING INFORMATION Ordering Number Lead Free Halogen Free UR6515L-TN5-R UR6515G-TN5-R UR6515L-TQ5-R UR6515G-TQ5-R UR6515L-TQ5-T UR6515G-TQ5-T www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd Package Packing TO-252-5 TO-263-5 TO-263-5 Tape Reel Tape Reel Tube 1 of 9 QW-R102-044.A UR6515A LINEAR INTEGRATED CIRCUIT PIN CONFIGURATIONS PIN DESCRIPTION PIN NAME VIN GND VCNTL VREF VOUT PIN TYPE I O I I O PIN DESCRIPTION Power supply pin for the VOUT output Ground pin Power supply pin for the internal control circuits Reference voltage input and active-low shutdown control pin Output voltage pin UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 9 QW-R102-044.A UR6515A LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 9 QW-R102-044.A UR6515A LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATING (unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT VCNTL Control Voltage VCNTL 7 V VIN Supply Voltage VIN 7 V TO-252-5 1.471 Power Dissipation (Ta=25°C) PD W TO-263-5 1.923 Junction Temperature TJ 125 °C Storage Temperature TSTG -65 ~ +150 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. THERMAL DATA PARAMETER SYMBOL RATINGS UNIT TO-252-5 68 Junction to Ambient (Note 1) θJA °C/W TO-263-5 52 TO-252-5 8 Junction to Case θJC °C/W TO-263-5 7.7 Note: 1. θJA is measured in the natural convection at Ta = 25°C on a high effective thermal conductivity test board of JEDEC 51-7 thermal measurement standard RECOMMENDED OPERATING CONDITIONS (Note 1) PARAMETER SYMBOL RATINGS VCNTL Control Voltage VCNTL 5 or 3 ± 5% VIN Supply Voltage VIN 2.5~1.5 ± 3% VREF Input Voltage VREF 1.25~0.75 ± 3% Junction Temperature TJ -40~+125 Notes: 1. All voltage values are with respect to the network ground terminal unless otherwise noted. 2. The VOUT tracks the VREF with additional voltage offset and load regulation. UNIT V V V °C ELECTRICAL CHARACTERISTICS (Ta=25°C, unless otherwise specified) (VIN=2.5V/1.8V, VCNTL=3.3V, VREF=1.25V/0.9V, COUT = 10µF (Ceramic)) PARAMETER SYMBOL TEST CONDITIONS INPUT CURRENT Operation Current of VCNTL ICNTL IOUT =0A Standby Current ISTB VREF<0.2V, RLOAD=180Ω OUTPUT VOLTAGE (DDR/DDR II/DDR III) Output Voltage Offset (VREF-VOUT) VOS IOUT =0A Load Regulation(DDR1/2) ΔVLOAD IOUT =±1.5A PROTECTION Current Limit ILIMIT VIN=2.5V/1.8V Thermal Shutdown Temperature TSD VCNTL=3.3V~5V Thermal Shutdown Hysteresis ΔTSD VCNTL=3.3V~5V VREF Shutdown VIH Enable Shutdown Threshold VIL Shutdown UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN TYP MAX UNIT 1 50 2.5 90 mA μA 0.8/1.2 20 2/3 mV % -20 3 125 A °C °C 150 50 0.8 0.2 V V 4 of 9 QW-R102-044.A UR6515A LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATIONS CIRCUITS 3.3V VOUT VOUT 5 COUT VREF 4 CSS VCNTL 3 CCNTL GND 2 VIN 1 R1 R2 CIN 2.5V/1.8V Enable R1=R2=100KΩ, COUT=10μF(Ceramic)+1000μF under the worst case testing condition CSS=1μF, CIN=470μF(Low ESR), CCNTL=47μF R2 VREF = VIN ( V ) , VOUT track VREF R1 + R2 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 9 QW-R102-044.A Output Voltage Transient (mV) Output Voltage Transient (mV) Output Current (A) Output Current (A) Output Voltage Transient (mV) Output Voltage Transient (mV) Output Current (A) Output Current (A) UR6515A UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS QW-R102-044.A 6 of 9 UR6515A LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS(Cont.) Output Short Circuit Protection VIN=2.5V, VCNTL=3.3V, VOUT=1.25V Output Short Circuit Protection Source Output Short Current (A) Output Short Current (A) 10 8 6 4 2 8 6 4 2 Time (1ms/Div) Time (1ms/Div) Output Short Circuit Protection Output Short Circuit Protection VIN=1.8V, VCNTL=3.3V, VOUT=0.9V Source 12 Output Short Current (A) Output Short Current (A) 10 0 0 12 Sink VIN=2.5V, VCNTL=3.3V, VOUT=1.25V 12 10 8 6 4 2 VIN=1.8V, VCNTL=3.3V, VOUT=0.9V Sink 10 8 6 4 2 0 0 Time (1ms/Div) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw Time (1ms/Div) 7 of 9 QW-R102-044.A UR6515A LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS(Cont.) Output Voltage vs. Temperature 1.27 Output Voltage vs. Temperature 0.92 VIN=2.5V 0.915 Output Voltage, VOUT (V) Output Voltage, VOUT (V) 1.265 VIN=1.8V 1.26 1.255 1.25 1.245 0.91 0.905 0.9 0.895 1.24 -50 -25 0 50 25 75 Temperature(°C) 100 125 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 0.89 -50 -25 0 50 25 75 Temperature(°C) 100 125 8 of 9 QW-R102-044.A UR6515A LINEAR INTEGRATED CIRCUIT UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 9 of 9 QW-R102-044.A