CHAMP CM8562BIN252 1.8a sink & source adjustable linear regulator Datasheet

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
2008/10/15 Rev. 1.1
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
2008/10/15 Rev. 1.1
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
2008/10/15 Rev. 1.1
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
2008/10/15 Rev. 1.1
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.
IC Package Layout Dimension
0.4mm
1.2mm
0.4mm
0.5mm
0.35mm
PAD
0.8mm
3.4mm
0.35mm
0.95mm
0.3mm
0.2mm
1.8mm
PS. Tolerance ±0.1mm
2008/10/15 Rev. 1.1
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
2008/10/15 Rev. 1.1
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
2008/10/15 Rev. 1.1
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
2008/10/15 Rev. 1.1
Champion Microelectronic Corporation
Page 8
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