CM8562AGIS

CM8562A 2A SINK & SOURCE ADJUSTABLE LINEAR REGULATOR GENERAL DESCRIPTION The CM8562A 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 CM8562A is capable of sourcing or sinking up to 2A of current while regulating an output VOUT voltage to within 2%(DDR-I) , 3% (DDR-ll) or less . The CM8562A provides low profile 8-pin SOIC package to save system space. FEATURES Ideal for DDR-l and DDR-ll 8-pin SOIC w/ power pad package 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 GN D GN D VCC A R EFE N 1 2 3 4 V IN GND NC VOUT 8 7 6 5 2007/01/30 Rev. 1.0 Champion Microelectronic Corporation Page 1 CM8562A 2A SINK & SOURCE ADJUSTABLE LINEAR REGULATOR PIN DESCRIPTION Pin No. 1 3 4 5 6 2,7,8 Symbol VIN NC VOUT REFEN VCCA GND Input Power No Connection Output Voltage Reference Voltage Input and Chip Enable Voltage supply for internal circuits Ground VCCA-1.9 VCCA-1.9 6 V V Description Min. 1 Operating Rating Typ. Max. 2.5/1.8 6 Unit V V ORDERING INFORMATION Part Number CM8562AIS CM8562AGIS* *Note : G : Suffix for Pb Free Product Temperature Range -40℃ to 85℃ -40℃ to 85℃ Package 8-Pin SOP (S08) 8-Pin SOP (S08) BLOCK DIAGRAM VCCA VIN Current Limit Protection REFEN Control + VOUT - Thermal GND APPLICATION CIRCUITS VIN CEin 200uF VOUT 4 1 1 U1 CM8562A C3 4.7uF VIN GND NC VTT GND GND VCCA REFEN 8 7 2 2 3 VCCA 6 5 1 2 C1 104 1 CEout 200uF 1 R1 VIN 100K 2 EN C4 4.7uF C2 104 1 1 R2 100K 3 2 1 2 2 Q1 2 2007/01/30 Rev. 1.0 Champion Microelectronic Corporation Page 2 CM8562A 2A 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 Storage Temperature ……................……. -65°C to 125°C Output RMS Current, Source or Sink .....…………........…...2A Lead Temperature (Soldering, 5 sec)………….…….. 260°C Thermal Resistance(θJC)………...……… 14°C/W (PSOP-8) 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 VOS I OP ｜ΔVLOAD｜ 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 VDROPOUT Dropout Voltage Iout=2A VCCA>VOUT+1.9V Iout=1.5A 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 REFEN FUNCTION REFEN Threshold VREFEN < VIN VREFEN < VCCA – 1.9V 0.4 0.5 0.6 V Sinking Sourcing 3.15V