CM8562B 1.8A SINK & SOURCE ADJUSTABLE LINEAR REGULATOR GENERAL DESCRIPTION FEATURES The CM8562B is a low cost linear regulator designed to Ideal for DDR-l、DDR-ll and DDR-lll 8-pin SOIC w/ power pad package, 5-Lead SOT-252 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 CM8562B is capable of sourcing or sinking up to 1.8A of current while regulating an output VOUT voltage to within 2%(DDR-I) , 3% (DDR-ll) or less . The CM8562B provides low profile 8-pin SOIC package to save system space. package 2 ways to adjust the output, VOUT with VFB pin Source and sink up to 1.8A , 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 IPC PCI/AGP Graphics SCSI-III Bus terminator Game/ Play Station Set Top Box PIN CONFIGURATION 8 2 VFB AGND 7 3 VOUT VCCA 6 4 VOUT REFEN 5 2008/04/15 Rev. 1.0 VCCA PGND REFEN VIN GND 1 VIN TO-252 (N252) Top View VO UT SOP-8 (S08) Top View 1 2 3 4 5 Champion Microelectronic Corporation Page 1 CM8562B 1.8A SINK & SOURCE ADJUSTABLE LINEAR REGULATOR PIN DESCRIPTION Pin No. 5-Lead 8-Pin 1 Symbol Description 1 VIN Input Power 2 VFB Operating Rating Typ. Max. Min. 1 6 V Feedback node for the VOUT 6 V VOUT Output Voltage 6 V VCCA-1.9 V 6 V 2 3,4 4 5 REFEN Reference Voltage Input and Chip Enable 5 6 VCCA Voltage supply for internal circuits 3 7 AGND Analog Ground 8 PGND Power Ground 2.5/1.8/1.5 ORDERING INFORMATION Part Number Temperature Range Package CM8562BIS -40℃ to 85℃ 8-Pin SOP (S08) CM8562BIN252 -40℃ to 85℃ 5-Lead TO-252 (N252) CM8562BGIS* -40℃ to 85℃ 8-Pin SOP (S08) -40℃ to 85℃ 5-Lead TO-252 (N252) CM8562BGIN252* *Note : G : Suffix for Pb Free Product BLOCK DIAGRAM VIN VCCA Current Limit Protection Control REFEN + VOUT - Thermal GND 5-Pin Block Diagram VIN VCCA Current Limit Protection Control REFEN + VOUT - Thermal PGND VFB 8-Pin Block Diagram 2008/04/15 Rev. 1.0 Unit Champion Microelectronic Corporation Page 2 CM8562B 1.8A SINK & SOURCE ADJUSTABLE LINEAR REGULATOR APPLICATION CIRCUITS VCCA 5-Lead TO-252 Device: no VFB Pi VIN 8-Pin SOIC Device: with VFB Pin VIN Q1 R2 EN CVCCA 10uF VOUT VOUT VFB GND REFEN CIN 470uF VCCA R1 100k * COUT 200uF CSS 1uF 100k Application Circuit as VTT Termination VCCA R1 & R2 to fix the Vref, and Vout will follow Vref VIN Q1 R2 EN CVCCA 10uF VOUT VOUT VFB GND VIN REFEN CIN 470uF VCCA R1 COUT 200uF CSS 1uF Application Circuit as Fixed LDO VCCA R3 & R4 to set VFB, and Vout range could be adjusted from 0V to VIN VIN Q1 EN R2 CVCCA 10uF VOUT VOUT VFB GND REFEN CIN 470uF VCCA VIN R1 R3 CSS 1uF COUT 200uF R4 Application Circuit as Adjustable LDO 2008/04/15 Rev. 1.0 Champion Microelectronic Corporation Page 3 CM8562B 1.8A SINK & SOURCE ADJUSTABLE LINEAR REGULATOR 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 .....…………........…...1.8A Lead Temperature (Soldering, 5 sec)……………….. 260°C Thermal Resistance(θJC)………….…… 14°C/W (PSOP-8) Storage Temperature Thermal Resistance(θJC)…………….…… 8°C/W (TO-252) ……................……. -65°C to 125°C Thermal Resistance(θJA)……………………...…… 75°C/W ELECTRICAL CHARACTERISTICS (Unless otherwise stated, these specifications apply TA=25°C; 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 Parameter Test Conditions VOS Output Offset Voltage IOUT=0A (Note 2) IOP Operating Current at VIN No load, Cout=200uF ｜ΔVLOAD｜ Load Regulation (DDR I/II) CM8562B Min. -20 Unit 20 mV 1 mA IL: 0A -> 1.8A 0.8/1.2 2/3 % 0.8/1.2 2/3 % 0.3 0.4 V 0.2 0.25 V 190 230 μA 90 110 μA Iout=1.8A Dropout Voltage Max. IL: 0A -> -1.8A VCCA>VOUT+1.9V VDROPOUT Typ. VCCA>VOUT+1.9V Iout=1.5A ICCQ Quiescent Current at VCCA At Room Temp. ISHDN Current in Shutdown Mode VIN Input Voltage Range (Note 3) No Load 1 2.5/1.8 6 V VCCA Input Voltage Range (Note 3) RL = 10 Ohm 3.15 3.3 6 V REFEN<0.2V, RL = 10 Ohm SHORT CIRCUIT PROTECTION ILIMIT Current Limit 5 A ISC,VIN Short Current Sinking 2 A ISC,GND Short Current Sourcing 2 A 3.15V<=VCCA<=6V 110 125 135 ℃ 25 30 35 ℃ 0.4 0.5 0.6 V OVER THERMAL PROTECTION THSD Thermal Shutdown Temperature Thermal Shutdown Hysteresis REFEN FUNCTION REFEN Threshold VREFEN < VIN VREFEN < VCCA – 1.9V 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 2008/04/15 Rev. 1.0 Champion Microelectronic Corporation Page 4 CM8562B 1.8A SINK & SOURCE ADJUSTABLE LINEAR REGULATOR FUNCTIONAL DESCRIPTION The CM8562B is a linear regulator that is capable of sinking INPUTS and sourcing 1.8A of current without an external heat sink. The input voltage pins (VIN) determine the output voltages (VOUT). At CM8562B, the desired output voltage could be The CM8562B integrates power MOSFETs that are capable programmable by two external voltage divider resistors. VIN is of source and sink 1.8A of current while maintaining excellent suggested to connect to VDDQ of memory module for better voltage regulation. The output voltage can be regulated within tracking with memory VDDQ. 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. OTHER SUPPLY VOLTAGES VCCA provide the voltage supply to the logic section and internal error amplifiers of CM8562B. 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. 2008/04/15 Rev. 1.0 Champion Microelectronic Corporation Page 5 CM8562B 1.8A SINK & SOURCE ADJUSTABLE LINEAR REGULATOR DIFFERENT HEATSINK AREA Thermal Resistance vs. Different Cooper Area Layout Design Dog-Bone Layout Minimum Footprint , θJA = 75℃/W 2 Copper Area = 30mm , θJA = 54℃/W 2 Copper Area = 10mm , θJA = 64℃/W 2 Copper Area = 50mm , θJA = 51℃/W 2 Copper Area = 70mm , θJA = 49℃/W 2008/04/15 Rev. 1.0 Champion Microelectronic Corporation Page 6 CM8562B 1.8A SINK & SOURCE ADJUSTABLE LINEAR REGULATOR PACKAGE DIMENSION 8-Pin SOP w/ Power Pad (PS08) θ θ 5-Lead TO-252 (N252) H A J M C L D M B S K G P Side View Front View 2008/04/15 Rev. 1.0 Champion Microelectronic Corporation Page 7 CM8562B 1.8A SINK & SOURCE ADJUSTABLE LINEAR REGULATOR 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 Sales & Marketing 5F, No. 11, Park Avenue II, Science-Based Industrial Park, HsinChu City, Taiwan 300 7F-6, No.32, Sec. 1, Chenggong Rd., Nangang District, Taipei City 115, Taiwan T E L : +886-3-567 9979 F A X : +886-3-567 9909 http://www.champion-micro.com T E L : +886-2-2788 0558 F A X : +886-2-2788 2985 2008/04/15 Rev. 1.0 Champion Microelectronic Corporation Page 8