1998 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
10.0 AMP POSITIVE
VOLTAGE REGULATOR
EZ1082
April 13, 1998
1
FEATURES
=
Low dropout performance, 1.3V max.
=
Full current rating over line and temperature
=
Fast transient response
=
2% total output regulation over line, load
and temperature
=
Adjust pin current max 90A over temperature
=
Fixed/adjustable output voltage
=
Line regulation typically 0.015%
=
Load regulation typically 0.05%
=
TO-220 package
DESCRIPTION
The EZ1082 series of high performance positive
voltage regulators are designed for use in applications
requiring low dropout performance at full rated
current. Additionally, the EZ1082 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 EZ1082 series
are three terminal regulators with fixed and adjustable
voltage options available in the popular TO-220
package.
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Maximum
Units
Input Supply
Voltage
V
IN
7
V
Power Dissipation
P
D
Internally
Limited
W
Thermal Resistance
Junction to Case
JC
1.6
C/W
Thermal Resistance
Junction to Ambient
JA
50
C/W
Operating Junction
Temperature Range
T
J
0 to 125
C
Storage
Temperature Range
T
STG
-65 to 150
C
Lead Temperature
(Soldering) 10 Sec.
T
LEAD
260
C
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
APPLICATIONS
=
High current microprocessor supplies
=
Post regulators
PIN CONFIGURATIONS
ORDERING INFORMATION
Note:
(1) Where X.X denotes voltage options. Available volt-
ages are: 2.5V and 3.3V. Leave blank for adjustable ver-
sion (1.3 to 5.7V). Contact factory for additional voltage
options.
DEVICE
PACKAGE
V
OUT
VOLTS
EZ1082CT-X.X
TO-220
See Note (1)
BLOCK DIAGRAM
1998 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
10.0 AMP POSITIVE
VOLTAGE REGULATOR
EZ1082
April 13, 1998
2
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, Adj V
IN
= 2.75V to 7.0V and Adj I
O
= 10mA to 10.0A;
Fixed V
IN
= 4.75 to 7.0V and Fixed I
O
= 0 mA to 10.0A
NOTES:
(1) Low duty cycle pulse testing with Kelvin connections required.
(2)
Bandwidth of 10 Hz to 10 kHz.
(3) 120 Hz input ripple (C
ADJ
for ADJ = 25F).
(4) Over Temp. (O.T.) = over specified operating junction temperature range.
Test Conditions
Test Limits
Parameter
Symbol
V
IN
I
O
T
J
(4)
Min
Typ
Max
Units
Output Voltage
(1)
V
O
5V
0mA
25C
0.99lV
O
l
V
O
1.01lV
O
l
V
Fixed Voltage Version
O.T.
0.98lV
O
l
V
O
1.02lV
O
l
Reference Voltage
(1)
V
REF
5V
10mA
25C
1.238
1.250
1.262
V
Adj Voltage Version
O.T.
1.225
1.250
1.275
Line Regulation
(1)
REG
(LINE)
10mA
25C
0.015
0.2
%
O.T.
0.035
0.2
Load Regulation
(1)
REG
(LOAD)
5V
25C
0.05
0.3
%
O.T.
0.2
0.4
Dropout Voltage
V
D
25C
1.2
V
V
OUT
,
V
REF
= 1%
O.T.
1.2
1.3
Current Limit
I
CL
O.T.
10.0
12
A
Quiescent Current
Fixed Voltage Version
I
Q
5V
O.T.
12
14
mA
Temperature Coefficient
T
C
O.T.
0.005
%/C
Adjust Pin Current
I
ADJ
25C
55
A
O.T.
90
Adjust Pin Current
Change
I
ADJ
O.T.
0.2
5
A
Temperature Stability
T
S
5V
0.5A
O.T.
0.5
%
Minimum Load Current
Adj Voltage Version
I
O
5V
O.T.
5
10
mA
RMS Output Noise
(2)
V
N
25C
0.003
%V
O
Ripple Rejection Ratio
(3)
R
A
5V
10.0A
O.T.
60
72
dB
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