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| CM8560 3A SINK & SOURCE ADJUSTABLE LINEAR BUS TERMINATOR GENERAL DESCRIPTION The CM8560 is a low cost linear regulator designed to provide a desired output voltage or termination voltage for various applications by converting voltage supplies ranging from 1.6V to 6.0V. The desired output voltage could be programmable by two external voltage divider resistors. The CM8560 is capable of sourcing or sinking up to 3A of current while regulating an output VOUT voltage to within 2% (DDR-I), 3% (DDR-II) or less. The CM8560 provides low profile 5-lead TO-263 package to save system space. FEATURES Ideal for DDR-I and DDR-II 5-Lead TO-263 packages Source and sink up to 3A, no heat sink required Integrated power MOSFETs Programmable output voltage by external resistors Output voltage could go down to 0.6V Iccq at VCCA less than 500uA Current limit protection and Short Circuit protection Thermal shutdown protection Shutdown for standby or suspend mode operation Minimum external components APPLICATIONS Mother Board PCI/AGP Graphics Game/ Play Station Set Top Box IPC SCSI-III Bus terminator PIN CONFIGURATION TO-263 (N263) Top View VCCA REFEN GND VOUT VIN 5 4 3 2 1 2004/10/13 Rev. 1.1 Champion Microelectronic Corporation Page 1 CM8560 3A SINK & SOURCE ADJUSTABLE LINEAR BUS TERMINATOR PIN DESCRIPTION Pin No. 1 2 3 4 5 VIN VOUT GND REFEN VCCA Symbol Input Power Output Voltage Ground Reference Voltage Input and Chip Enable Voltage supply for internal circuits VCCA-2.5 V V Description Min. Operating Rating Typ. Max. 2.5/1.8 6 Unit V V ORDERING INFORMATION Part Number CM8560IN263 CM8560GIN263* *Note: Add suffix "G" for Pb Free Product Temperature Range -40 to 85 -40 to 85 Package 5-Lead TO-263 (N263) 5-Lead TO-263 (N263) BLOCK DIAGRAM VCCA VIN Current Limit Protection REFEN Control + VOUT Thermal GND APPLICATION CIRCUITS VCCA VIN R1 100k VCCA VIN GND REFEN EN Q1 R2 100k CSS 1uF 2004/10/13 Rev. 1.1 Champion Microelectronic Corporation - CIN 470uF CVCCA 10uF VOUT COUT 200uF VOUT Page 2 CM8560 3A SINK & SOURCE ADJUSTABLE LINEAR BUS TERMINATOR ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings are those values beyond which the device could be permanently damaged. VIN, VCCA ...................................................................7V Output RMS Current, Source or Sink ...............................3A Storage Temperature ............................. -65C to 125C Lead Temperature (Soldering, 5 sec).................... 260C Thermal Resistance(JC )..... ......................... .7.7C/W ELECTRICAL CHARACTERISTICS (Unless otherwise stated, these specifications apply TA=25C; VIN=+2.5V and VCCA=+3.3V, VREFEN=1.25V) maximum ratings are stress ratings only and functional device operation is not implied. (Note 1) Symbol VOS IOP VLOAD ICCQ ISHDN VIN VCCA ILIMIT ISC,VIN ISC,GND THSD Parameter Output Offset Voltage Operating Current at VIN Load Regulation (DDR I/II) Quiescent Current at VCCA Current in Shutdown Mode Input Voltage Range (Note 3) Input Voltage Range (Note 3) Current Limit Short Current Short Current Thermal Shutdown Temperature Thermal Shutdown Hysteresis REFEN FUNCTION REFEN Threshold VREFEN < VIN VREFEN < VCCA - 2.5V 0.4 0.5 0.6 V Sinking Sourcing 3.75V<=VCCA<=6V 2 3 125 25 150 30 35 Test Conditions IOUT=0A (Note 2) No load, Cout=200uF IL: 0A -> 3A IL: 0A -> -3A At Room Temp. REFEN<0.2V, RL = 10 Ohm No Load RL = 10 Ohm 1.35/1 3.75 5 0.8/1.2 0.8/1.2 190 90 2.5/1.8 CM8560 Min. -20 Typ. Max. 20 1 2/3 2/3 230 110 6 6 Unit mV mA % % A A V V A A A SHORT CIRCUIT PROTECTION OVER THERMAL PROTECTION Note 1: Limits are guaranteed by 100% testing, sampling, or correlation with worst case test conditions Note 2: VOS = VREFEN - VOUT Note 3: Keep VCCA >= VIN and VCCA >= VREFEN + 2.5V on operation power on and power off sequences Note 4: Guaranteed by design, not 100% test 2004/10/13 Rev. 1.1 Champion Microelectronic Corporation Page 3 CM8560 3A SINK & SOURCE ADJUSTABLE LINEAR BUS TERMINATOR FUNCTIONAL DESCRIPTION The CM8560 is a linear regulator that is capable of sinking and sourcing 3A of current without an external heat sink. The CM8560 integrates power MOSFETs that are capable of source and sink 3A of current while maintaining excellent voltage regulation. The output voltage can be regulated within 3% or less by using the external feedback. Separate voltage supply inputs have been added to fit applications with various power supplies for the databus and power buses. INPUTS The input voltage pins (VIN) determine the output voltages (VOUT). At CM8560, the desired output voltage could be programmable by two external voltage divider resistors. VIN is suggested to connect to VDDQ of memory module for better tracking with memory VDDQ. OTHER SUPPLY VOLTAGES VCCA provide the voltage supply to the logic section and internal error amplifiers of CM8560. OUPUTS The output voltage pins (VOUT) are tied to the databus, address, or clock lines via an external inductor. Output voltage is determined by the VIN. PACKAGE DIMENSION 5-Lead TO-263 (N263) C A D I K G F E 2004/10/13 Rev. 1.1 L Champion Microelectronic Corporation B Page 4 CM8560 3A SINK & SOURCE ADJUSTABLE LINEAR BUS TERMINATOR IMPORTANT NOTICE Champion Microelectronic Corporation (CMC) reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or environmental damage. CMC integrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. Use of CMC products in such applications is understood to be fully at the risk of the customer. In order to minimize risks associated with the customer's applications, the customer should provide adequate design and operating safeguards. HsinChu Headquarter 5F, No. 11, Park Avenue II, Science-Based Industrial Park, HsinChu City, Taiwan 300 T E L : +886-3-567 9979 F A X : +886-3-567 9909 http://www.champion-micro.com Sales & Marketing 11F, No. 306-3, Sec. 1, Ta Tung Rd., Hsichih, Taipei Hsien, Taiwan 221 T E L : +886-2-8692 1591 F A X : +886-2-8692 1596 2004/10/13 Rev. 1.1 Champion Microelectronic Corporation Page 5 |
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