Datasheet CM8562P - 2A SINK & SOURCE ADJUSTABLE LINEAR REGULATOR Datasheet

CM8562P

2A S

INK & SOURCE ADJUSTABLE LINEAR REGULATOR

GENERAL DESCRIPTION

The CM8562P 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 CM8562P 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 CM8562P provides low profile 8-pin SOIC package to

save system space.

APPLICATIONS

 Mother Board

 PCI/AGP Graphics

 Game/ Play Station

 Set Top Box

FEATURES

 Ideal for DDR-l、DDR-ll and DDR-lll

 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

 IPC
 SCSI-III Bus terminator

PIN CONFIGURATION

SOP-8 (S08)

Top View

1 8

2 7

3 6

4 5

VIN

GN D

GN D GN D

NC VCC A

VO U T R EF E N

2007/05/14 Rev. 0.5 Champion Microelectronic Corporation Page 1

CM8562P

2A S

INK & SOURCE ADJUSTABLE LINEAR REGULATOR

PIN DESCRIPTION

Pin No. Symbol Description

Min. Typ. Max. Unit

1 VIN Input Power 1 2.5/1.8/1.5 6 V

3 NC No Connection V

4 VOUT Output Voltage VCCA-1.9

5 REFEN

Reference Voltage Input and Chip Enable VCCA-1.9 V

6 VCCA Voltage supply for internal circuits 6 V

2,7,8 GND Ground

Operating Rating

ORDERING INFORMATION

Part Number Temperature Range Package

CM8562PIS 8-Pin SOP (S08)

CM8562PGIS* 8-Pin SOP (S08)

-40℃ to 85℃

-40℃ to 85℃

*Note : G : Suffix for Pb Free Product

BLOCK DIAGRAM

VCCA

VIN

Current Limit

Protection

REFEN

Thermal

APPLICATION CIRCUITS

VIN

CEin

200uF

VOUT

CEout

200uF

1

C3

4.7uF

2

1

C4

4.7uF

2

Control

U1 CM8562P

1

VIN

2

GND

3

NC

4 5

V TT REFEN

GND

GND

VCCA

104

8

7

6

+

-

C2

VOUT

GND

VCCA

1

C1
104

2

1

1

R2

2

100K

2

1

Q1

2 3

R1
100K

VIN

21

EN

2007/05/14 Rev. 0.5 Champion Microelectronic Corporation Page 2

CM8562P

2A S

INK & 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 Lead Temperature (Soldering, 5 sec)……………….. 260°C

Output RMS Current, Source or Sink .....……………….......…...2A

Storage Temperature …….........................……. -65°C to 125°C

ELECTRICAL CHARACTERISTICS (Unless otherwise stated, these specifications apply T

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)

Thermal Resistance(θ
Thermal Resistance(θ

)………..……… 14°C/W (PSOP-8)

JC

)…………………………… 75°C/W

JA

A

=25°C;

Symbol Parameter Test Conditions

V Output Offset Voltage I

OS OUT

I Operating Current at VIN No load, Cout=200uF 1 mA

OP

｜ΔV

V Dropout Voltage

SHORT CIRCUIT PROTECTION

OVER THERMAL PROTECTION

REFEN FUNCTION

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

｜

LOAD

DROPOUT

I Quiescent Current at V At Room Temp. 190 230 μA

CCQ CCA

I Current in Shutdown Mode 90 110 μA

SHDN

V Input Voltage Range (Note 3) No Load 1 2.5/1.8 6 V

IN

V Input Voltage Range (Note 3) R = 10 Ohm 3.15 3.3 6 V

CCA L

I Current Limit 5 A

LIMIT

I Short Current Sinking 2 A

SC,VIN

I Short Current Sourcing 2 A

SC,GND

THSD Thermal Shutdown Temperature 3.15V<=VCCA<=6V 125 150 155

Thermal Shutdown Hysteresis 25 30 35

REFEN Threshold

Load Regulation (DDR I/II)

VREFEN < VCCA – 1.9V

=0A (Note 2) -20 20 mV

IL: 0A -> 2A 0.8/1.2 2/3 %

I

: 0A -> -2A 0.8/1.2 2/3 %

L

VCCA>VOUT+1.9V

Iout=2A

VCCA>VOUT+1.9V

Iout=1.5A

REFEN<0.2V, RL = 10

Ohm

VREFEN < VIN

Min. Typ. Max.

0.4 0.5 0.6 V

CM8562P

0.3 0.4 V

0.2 0.25 V

Unit

℃

℃

2007/05/14 Rev. 0.5 Champion Microelectronic Corporation Page 3

CM8562P

2A S

INK & SOURCE ADJUSTABLE LINEAR REGULATOR

FUNCTIONAL DESCRIPTION

INPUTS The CM8562P is a linear regulator that is capable of sinking

and sourcing 2A of current without an external heat sink. The input voltage pins (VIN) determine the output voltages

The CM8562P 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.

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.

(VOUT). At CM8562P, 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 CM8562P. OUTPUTS

2007/05/14 Rev. 0.5 Champion Microelectronic Corporation Page 4

CM8562P

2A S

INK & SOURCE ADJUSTABLE LINEAR REGULATOR

DIFFERENT HEATSINK AREA

Thermal Resistance vs. Different Cooper Area Layout Design

Dog-Bone Layout

Minimum Footprint , θ

Copper Area = 30mm

Copper Area = 70mm

= 75℃/W

JA

2

, θJA = 54℃/W

2

, θ

= 49℃/W

JA

2

Copper Area = 10mm

Copper Area = 50mm

, θJA = 64℃/W

2

, θ

JA

= 51℃/W

2007/05/14 Rev. 0.5 Champion Microelectronic Corporation Page 5

CM8562P

2A S

PACKAGE DIMENSION

INK & SOURCE ADJUSTABLE LINEAR REGULATOR

8-Pin SOP w/ Power Pad (PS08)

θ

θ

2007/05/14 Rev. 0.5 Champion Microelectronic Corporation Page 6

CM8562P

2A S

INK & 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.

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2007/05/14 Rev. 0.5 Champion Microelectronic Corporation Page 7