CM1084
5.0 AMP POSITIVE VOLTAGE REGULATOR
2003/05/14 Preliminary Rev. 0.2 Champion Microelectronic Corporation Page 1
GENERAL DESCRIPTION
FEATURES
The CM1084 series of high performance positive voltage
regulators are designed for use in applications requiring low
dropout performance at full rated current. Additionally, the
CM1084 series provides excellent regulation over variations
in line, load and temperature.
Outstanding features include low dropout performance at
rated current, fast transient response, internal current
limiting and thermal shutdown protection of the output
device. The CM1084 series are three terminal regulators
with adjustable voltage options available in popular
packages.
! Low dropout performance
! 1.3V max. for CM1084
! Full current rating over line and temperature
! Fast transient response
! ±2% total output regulation over line, load and temperature
! Adjust pin current max 90µA over temperature
! Adjustable output voltage
! Line regulation typically 0.015%
! Load regulation typically 0.1%
! TO-220, TO-252 and TO-263 packages
APPLICATIONS
! Power Supplies
! Computer Add-On Cards
! Other Applications Requiring Low Dropout Voltage Over
Rated Current
PIN CONFIG UR ATION
TO-220
Top View
123
GND/ADJ
VOUT
VIN
TO-252
Top View
123
GND/ADJ
VOUT
VIN
TO-263
Top View
3
2
1
VIN
VOUT
GND/ADJ
TO-263L
Top View
3
2
1
VIN
VOUT
GND/ADJ
CM1084
5.0 AMP POSITIVE VOLTAGE REGULATOR
2003/05/14 Preliminary Rev. 0.2 Champion Microelectronic Corporation Page 2
BLOCK DIAGR AM
ORDERING INFORMATION
Package Type
TO-220 TO-252 TO-263 TO-263L
Operating Temperature
Range (TA) Output Voltage
CM1084KCN220 CM1084KCN252 CM1084KCN263 CM1084KCN263L 0℃ ~ +70℃ 2.5V
CM1084SCN220 CM1084SCN252 CM1084SCN263 CM1084SCN263L 0℃ ~ +70℃ 3.3V
CM1084CN220 CM1084CN252 CM1084CN263 CM1084CN263L 0℃ ~ +70℃ ADJ.
A BSOLUTE MAXIMUM RA TINGS
Parameter Symbol Maximum Units
Input Supply Voltage VIN 7 V
Power Dissipation PD Internally
Limited. W
Thermal Resistance Junction to Case
TO-220
TO-263
TO-252
θJC
2.5
2.5
2.5
℃/W
Thermal Resistance Junction to Ambient
TO-220
TO-263/TO-263L
TO-252
θJA
45
45
80
℃/W
Operating Junction Temperature Range TJ 0 to 125 ℃
Storage Temperature Range TSTG -65 to 150 ℃
Lead Temperature（Soldering）10 Sec TLEAD 260 ℃
S.O.A
CURRENT
LIMITING
AMPLIFIER
THERMAL OVERLOAD
SENSE
Limit
VOLTAGE
REGULATION
AMPLIFIER
VREF
OUTPUT
ADJ/COM
INPUT
CM1084
5.0 AMP POSITIVE VOLTAGE REGULATOR
2003/05/14 Preliminary Rev. 0.2 Champion Microelectronic Corporation Page 3
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, Adj VIN = 2.75V to 7.0V and Adj I0 =10mA to 5.0A
Test Conditions Test Limits
Parameter Symbol VIN l
0 T
j Min Typ Max Units
5V 0mA 25℃ 0.99l V0I V0 1.01IV0I Output Voltage（1）
Fixed Voltage VO 5A 125℃ 0.98l V0I V0 1.02IV0I V
5V 10mA 25℃ 1.238 1.250 1.262 Reference Voltage（1）
Adj Voltage Version VREF 5A 125℃ 1.225 1.250 1.275 V
Line Regulation（1） REG（LINE） 10mA 25℃ 0.015 0.2 %
Load Regulation（1） REG（LOAD） 5V 25℃ 0.1 0.3 %
Dropout Voltage（2）
CM1084 VD 25℃ 1.3 V
Current Limit ICL 125℃ 5.0 7.5 A
Quiescent Current IO 5V
Temperature Coefficient TC 0.005 %/℃
Adjust Pin Current IADJ 25℃ 55 120 μA
Adjust Pin Current
Change
ΔIADJ 0.2 5 μA
Temperature Stability TS 5V 0.5A 0.5 %
Minimum Load Current
Adj Voltage Version IO 5V 5 10 mA
RMS Output Noise（3） V
N 25℃ 0.003 %VO
Ripple Rejection Ratio（4） R
A 5V 5.0A 60 72 dB
NOTES：
：：
：
（1） Low duty cycle pulse testing with Kelvin connections required.
（2） ΔVOUT , ΔVREF =1%
（3） Bandwidth of 10 Hz to 10 kHz.
（4） 120 Hz input ripple（CADJ for ADJ=25μF）
CM1084
5.0 AMP POSITIVE VOLTAGE REGULATOR
2003/05/14 Preliminary Rev. 0.2 Champion Microelectronic Corporation Page 4
APPLIC ATION CIRCUIT
Fixed Output Voltage Regulator
Adjustable Regulator
CM1084
5.0 AMP POSITIVE VOLTAGE REGULATOR
2003/05/14 Preliminary Rev. 0.2 Champion Microelectronic Corporation Page 5
PACKAGE DIMENSIO N
TO-220 (N220)
L
N
H
J
K
A
C
B
D
F
G
T
V
U
Z
S
R
Q
S
C
T
U
J
R
B
Q
Z
H
A
F
LV
GD
N
TO-252 (N252)
L
C
A
J
H
D
R
B
S
K
G
E
Y
X
L2
L1
CM1084
5.0 AMP POSITIVE VOLTAGE REGULATOR
2003/05/14 Preliminary Rev. 0.2 Champion Microelectronic Corporation Page 6
PACKAGE DIMENSIO N
TO-263 (N263)
B
S
G
E
C
AV
J
K
H
D
TO-263 (N263)
B
S
G
E
C
AV
J
K
H
D
Front View Side View
CM1084
5.0 AMP POSITIVE VOLTAGE REGULATOR
2003/05/14 Preliminary Rev. 0.2 Champion Microelectronic Corporation Page 7
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-Ba sed Industrial Park,
HsinChu City, Taiwan
11F, No. 306-3, SEC. 1, Ta Tung Road,
Hsichih, Taipei Hsien 221, Taiwan
TEL: +886-3-567 9979 TEL: +886-2-8692 1591
FAX: +886-3-567 9909 FAX: +886-2-8692 1596
