View CM8562A_4848001.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

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
VIN GN D NC VO U T
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 ............................. -65C to 125C
Output RMS Current, Source or Sink ...............................2A
Lead Temperature (Soldering, 5 sec)..................... 260C Thermal Resistance(JC)..................... 14C/W (PSOP-8) Thermal Resistance(JA).................................. 75C/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 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<=VCCA<=6V 2 2 125 25 150 30 155 35 At Room Temp. REFEN<0.2V, RL = 10 Ohm No Load RL = 10 Ohm 1 3.15 0.8/1.2 0.8/1.2 0.3 0.2 190 90 2.5/1.8 3.3 5 CM8562A Min. -20 Typ. Max. 20 1 2/3 2/3 0.4 0.25 230 110 6 6 Unit mV mA % % V V 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 + 1.9V on operation power on and power off sequences Note 4: Guaranteed by design, not 100% test
2007/01/30 Rev. 1.0
Champion Microelectronic Corporation
Page 3
CM8562A
2A SINK & SOURCE ADJUSTABLE LINEAR REGULATOR
FUNCTIONAL DESCRIPTION
The CM8562A is a linear regulator that is capable of sinking and sourcing 2A of current without an external heat sink. The CM8562A 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 CM8562A, 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 CM8562A.
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.
2007/01/30 Rev. 1.0
Champion Microelectronic Corporation
Page 4
CM8562A
2A SINK & SOURCE ADJUSTABLE LINEAR REGULATOR
DIFFERENT HEATSINK AREA
Thermal Resistance vs. Different Cooper Area Layout Design
Dog-Bone Layout
Minimum Footprint , JA = 75/W
Copper Area = 10mm , JA = 64/W
2
Copper Area = 30mm , JA = 54/W
2
Copper Area = 50mm , JA = 51/W
2
Copper Area = 70mm , JA = 49/W
2
2007/01/30 Rev. 1.0
Champion Microelectronic Corporation
Page 5
CM8562A
2A SINK & SOURCE ADJUSTABLE LINEAR REGULATOR
PACKAGE DIMENSION
8-Pin SOP w/ Power Pad (PS08)
2007/01/30 Rev. 1.0
Champion Microelectronic Corporation
Page 6
CM8562A
2A 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
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
7F-6, No.32, Sec. 1, Chenggong Rd., Nangang District, Taipei City 115, Taiwan T E L : +886-2-2788 0558 F A X : +886-2-2788 2985
2007/01/30 Rev. 1.0
Champion Microelectronic Corporation
Page 7

▲Up To Search▲

Price & Availability of CM8562A

	To Download CM8562A Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .