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| CM8562 2A SINK & SOURCE ADJUSTABLE LINEAR BUS TERMINATOR GENERAL DESCRIPTION The CM8562 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 1V to 6.0V. The desired output voltage could be programmable by two external voltage divider resistors. The CM8562 is capable of sourcing or sinking up to 2A of current while regulating an output VOUT voltage to within 2% (DDR-I), 3% (DDR-II) or less. The CM8562 provides low profile 8-pin SOIC package to save system space. FEATURES Ideal for DDR-I and DDR-II 8-pin SOIC w/ power pad package, 5-Lead TO-252 package 2 ways to adjust the output, VOUT with VFB pin Source and sink up to 2A, 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 SOP-8 (S08) Top View 1 2 3 4 VIN VFB VOUT VOUT PGND AGND VCCA REFEN 8 7 TO-252 (N252) Top View REFEN 6 VOUT VIN 5 1 2 3 4 2004/06/01 Preliminary Rev. 1.2 Champion Microelectronic Corporation VCCA GND 5 Page 1 CM8562 2A SINK & SOURCE ADJUSTABLE LINEAR BUS TERMINATOR PIN DESCRIPTION Pin No. 5-Lead 8-Pin 1 1 2 2 4 5 3 3,4 5 6 7 8 Symbol VIN VFB VOUT REFEN VCCA AGND PGND Input Power Feedback node for the VOUT Output Voltage Reference Voltage Input and Chip Enable Voltage supply for internal circuits Analog Ground Power Ground Description Min. 1 Operating Rating Typ. Max. 2.5/1.8 6 6 6 VCCA-1.9 6 Unit V V V V V ORDERING INFORMATION Part Number CM8562IS CM8562IN252 CM8562GIS* CM8562GIN252* *Note: G : Suffix for Pb Free Product Temperature Range -40J -40J -40J -40J to 85J to 85J to 85J to 85J Package 8-Pin SOP (S08) 5-Lead TO-252 (N252) 8-Pin SOP (S08) 5-Lead TO-252 (N252) BLOCK DIAGRAM VCCA VIN Current Limit Protection REFEN Control + VOUT - Thermal GND 5-Pin Block Diagram VCCA VIN Current Limit Protection REFEN Control + VOUT - Thermal PGND VFB 8-Pin Block Diagram 2004/06/01 Preliminary Rev. 1.2 Champion Microelectronic Corporation Page 2 CM8562 2A SINK & SOURCE ADJUSTABLE LINEAR BUS TERMINATOR APPLICATION CIRCUITS VCCA VIN 5-Lead TO-252 Device: no VFB Pin 8-Pin SOIC Device: with VFB Pin R1 100k VCCA VIN CIN 470uF CVCCA 10uF GND REFEN VOUT VFB VOUT COUT 200uF * Q1 R2 100k EN CSS 1uF Application Circuit as VTT Termination VCCA VIN R1 & R2 to fix the Vref, and Vout will follow Vref R1 VCCA VIN CIN 470uF CVCCA 10uF GND REFEN VOUT VFB COUT 200uF VOUT Q1 R2 EN CSS 1uF Application Circuit as Fixed LDO VCCA VIN R1 VIN VCCA CIN 470uF CVCCA 10uF R3 & R4 to set VFB, and Vout range could be adjusted from 0V to VIN GND REFEN VOUT VFB R3 COUT 200uF VOUT Q1 R2 EN CSS 1uF R4 Application Circuit as Adjustable LDO 2004/06/01 Preliminary Rev. 1.2 Champion Microelectronic Corporation Page 3 CM8562 2A 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, VFB ...........................................................7V Output RMS Current, Source or Sink ...............................2A Storage Temperature ............................. -65C to 125C Lead Temperature (Soldering, 5 sec).................... 260C Thermal Resistance (c JC)................. 14C/W (PSOP-8) Thermal Resistance (c JC)................. 8C/W (TO-252) 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) CM8562 Min. -20 0.8/1.2 0.8/1.2 0.3 0.2 190 90 1 3.15 2.5/1.8 3.3 5 Sinking Sourcing 3.15V<=VCCA<=6V 2 2 125 25 VREFEN < VIN VREFEN < VCCA - 1.9V 150 30 155 35 Typ. Max. 20 1 2/3 2/3 0.4 0.25 230 110 6 6 Symbol VOS IOP UG VLOADU Parameter Output Offset Voltage Operating Current at VIN Load Regulation (DDR I/II) Test Conditions IOUT=0A (Note 2) No load, Cout=200uF IL: 0A -> 2A IL: 0A -> -2A VCCA>VOUT+1.9V, IOUT=2A VCCA>VOUT+1.9V, IOUT=1.5A At Room Temp. REFEN<0.2V, RL = 10 Ohm No Load RL = 10 Ohm Unit mV mA % % V V A A V V A A A J J VDROPOUT Dropout Voltage ICCQ ISHDN VIN VCCA ILIMIT ISC,VIN ISC,GND THSD 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 SHORT CIRCUIT PROTECTION OVER THERMAL PROTECTION REFEN FUNCTION REFEN Threshold 0.4 0.5 0.6 V 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 + 1.9V on operation power on and power off sequences Note 4: Guaranteed by design, not 100% test 2004/06/01 Preliminary Rev. 1.2 Champion Microelectronic Corporation Page 4 CM8562 2A SINK & SOURCE ADJUSTABLE LINEAR BUS TERMINATOR FUNCTIONAL DESCRIPTION The CM8562 is a linear regulator that is capable of sinking and sourcing 2A of current without an external heat sink. The CM8562 integrates power MOSFETs that are capable of source and sink 2A 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 CM8562, 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 CM8562. OUTPUTS 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. 2004/06/01 Preliminary Rev. 1.2 Champion Microelectronic Corporation Page 5 CM8562 2A SINK & SOURCE ADJUSTABLE LINEAR BUS TERMINATOR PACKAGE DIMENSION 8-Pin SOP w/ Power Pad (PS08) 5-Lead TO-252 (N252) A B H J C M D S P G Side View K Front View 2004/06/01 Preliminary Rev. 1.2 Champion Microelectronic Corporation L M Page 6 CM8562 2A 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 2004/06/01 Preliminary Rev. 1.2 Champion Microelectronic Corporation Page 7 |
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