UR6516BG-SH2-R

UNISONIC TECHNOLOGIES CO., LTD UR6516B Preliminary CMOS IC 2A SINK & SOURCE ADJUSTABLE LINEAR BUS TERMINATOR DESCRIPTION The UTC UR6516B is a low cost linear regulator providing a desired output voltage or termination voltage for various applications by converting voltage supplies ranging from 1V ~ 6.0V. The desired output voltage could be programmable by two external voltage divider resistors. The UTC UR6516B can source or sink up to 2A of current while regulating an output voltage to within 2% (DDR-I), 3% (DDR-II) or less. The UTC UR6516B can be used in applications, such as PCI/AGP graphics, game/play station, set top box, mother board. FEATURES * Ideal for DDR-I ,DDR-II * Output Voltage could Drop Down to 0.6V * Source and Sink up to 2A, Without an External Heat Sink * Integrated Power MOSFETs * Output Voltage Varies though Adjusting External Resistors * ICCQ is Lower than 500uA at VCCA * Thermal Shutdown Protection, Current Limit Protection, and Short Circuit Protection Circuits Included * Shutdown for Standby or Suspend Mode Operation * Requiring Minimum External Components ORDERING INFORMATION Ordering Number UR6516BG-SH2-R Package HSOP-8 Packing Tape Reel www.unisonic.com.tw Copyright © 2010 Unisonic Technologies Co., Ltd 1 of 6 QW-R502-449.a UR6516B PIN CONFIGURATION Preliminary CMOS IC PIN DESCRIPTION PIN NO 1 2,7,8 3 4 5 6 PIN NAME VIN GND NC VOUT REFEN VCCA DESCRIPTION Input Power Ground No Connection Output Voltage Reference Voltage Input and Chip Enable Voltage Supply for Internal Circuits UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R502-449.a UR6516B BLOCK DIAGRAM VCCA Preliminary CMOS IC VIN Current Limit Protection Thermal REFEN EA VOUT GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R502-449.a UR6516B ABSOLUTE MAXIMUM RATING Preliminary CMOS IC PARAMETER SYMBOL RATINGS UNIT VIN, VCCA VIN, VCCA 7 V Output RMS Current, Source or Sink 2 A Storage Temperature TSTG -65~125 °C Notes: 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. OPERRATING RATING PARAMETER Input Power Output Voltage Reference Voltage Input and Chip Enable Voltage Supply for Internal Circuits SYMBOL VIN VOUT REFEN VCCA TEST CONDITIONS MIN 1 TYP 2.5/1.8/1.5 MAX UNIT 6 V V VCCA-1.9 V VCCA-1.9 6 V THERMAL DATA PARAMETER Junction to Case SYMBOL θJC RATINGS 14 UNIT °C/W ELECTRICAL CHARACTERISTICS (TA=25°C; VIN=+2.5V and VCCA=+3.3V, VREFEN=1.25V, unless otherwise specified) (Note 1) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX Output Offset Voltage (Note 2) VOS IOUT=0A -20 20 Operating Current at VIN IOP No load, Cout=200uF 1 IL: 0A -> 2A 0.8/1.2 2/3 ｜ΔVLOAD｜ Load Regulation (DDR I/II) IL: 0A -> -2A 0.8/1.2 2/3 VCCA>VOUT+1.9V, IOUT=2A 0.3 0.4 Dropout Voltage VDROPOUT 0.2 0.25 VCCA>VOUT+1.9V, IOUT=1.5A Quiescent Current at VCCA ICCQ At Room Temp. 190 230 Current in Shutdown Mode ISHDN VREFEN