1999 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
7.0 AMP LOW DROPOUT
POSITIVE VOLTAGE REGULATORS
EZ1584
November 22, 1999
1
FEATURES
Low dropout performance,
1.3V max. for EZ1584
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 EZ1584 series of high performance positive
voltage regulators are designed for use in applications
requiring low dropout performance at full rated current.
Additionally, the EZ1584 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 EZ1584 series are three terminal
regulators with fixed and adjustable voltage options
available in the popular TO-220 package.
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
BLOCK DIAGRAM
APPLICATIONS
Pentium
Processor supplies
PowerPCTM supplies
Other 2.5V to 3.6V microprocessor supplies
Low voltage logic supplies
Battery-powered circuitry
Post regulator for switching supply
PIN CONFIGURATION
Pentium Processor is a trademark of Intel Corp. PowerPC is a trademark of IBM Corp.
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
TO-220
JC
2
C/W
Thermal Resistance
Junction to Ambient
TO-220
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
ORDERING INFORMATION
DEVICE
PACKAGE
V
OUT
VOLTS
EZ1584CT-X.X
TO-220
See Note (1)
Note:
(1) Where X.X denotes voltage options. Available
voltages are: 1.5V, 2.5V and 3.3V. Leave blank for
adjustable version (1.3 to 5.7V). Contact factory for
additional voltage options.
1999 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
7.0 AMP LOW DROPOUT
POSITIVE VOLTAGE REGULATORS
EZ1584
November 22, 1999
2
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, Adj V
IN
= 2.75V to 7.0V and Adj I
O
= 10mA to 7.0A;
Fixed V
IN
= 4.75 to 7.0V and Fixed I
O
= 0 mA to 7.0A
NOTES:
(1) Low duty cycle pulse testing with Kelvin connections required.
(2)
V
OUT
,
V
REF
= 1%
(3) Bandwidth of 10 Hz to 10 kHz.
(4) 120 Hz input ripple (C
ADJ
for ADJ = 25F).
(5) Over Temp. (O.T.) = over specified operating junction temperature range.
Test Conditions
Test Limits
Parameter
Symbol
V
IN
I
O
T
J
(5)
Min
Typ
Max
Units
Output Voltage
(1)
V
O
5V
10mA
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)
25C
0.015
0.2
%
Fixed Voltage Version
0mA
O.T.
0.035
0.2
Adj Voltage Version
10mA
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
(2)
V
D
25C
1
V
EZ1584
O.T.
1.1
1.3
Current Limit
I
CL
O.T.
7.1
9.0
A
Quiescent Current
Fixed Voltage Version
I
Q
5V
O.T.
10
13
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
(3)
V
N
25C
0.003
%V
O
Ripple Rejection Ratio
(4)
R
A
5V
7.0A
O.T.
60
72
dB
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