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Semtech Corporation |
7.0 AMP LOW DROPOUT
POSITIVE VOLTAGE REGULATORS
EZ1584
November 22, 1999
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
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.
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 90µA over temperature
• Fixed/adjustable output voltage
• Line regulation typically 0.015%
• Load regulation typically 0.05%
• TO-220 package
APPLICATIONS
• Pentium® Processor supplies
• PowerPC™ supplies
• Other 2.5V to 3.6V microprocessor supplies
• Low voltage logic supplies
• Battery-powered circuitry
• Post regulator for switching supply
BLOCK DIAGRAM
PIN CONFIGURATION
ORDERING INFORMATION
DEVICE
PACKAGE
VOUT 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.
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol Maximum Units
Input Supply Voltage
Power Dissipation
Thermal Resistance
Junction to Case
TO-220
Thermal Resistance
Junction to Ambient
TO-220
Operating Junction
Temperature Range
Storage Temperature
Range
Lead Temperature
(Soldering) 10 Sec
VIN
PD
θJC
θJA
TJ
TSTG
TLEAD
7
Internally
Limited
V
W
2 °C/W
50 °C/W
0 to 125 °C
-65 to 150 °C
260 °C
© 1999 SEMTECH CORP.
Pentium Processor is a trademark of Intel Corp. PowerPC is a trademark of IBM Corp.
1
652 MITCHELL ROAD NEWBURY PARK CA 91320
7.0 AMP LOW DROPOUT
POSITIVE VOLTAGE REGULATORS
EZ1584
November 22, 1999
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, Adj VIN = 2.75V to 7.0V and Adj IO = 10mA to 7.0A;
Fixed VIN = 4.75 to 7.0V and Fixed IO = 0 mA to 7.0A
Parameter
Output Voltage(1)
Fixed Voltage Version
Reference Voltage (1)
Adj Voltage Version
Line Regulation(1)
Fixed Voltage Version
Adj Voltage Version
Load Regulation(1)
Symbol
VO
VREF
REG(LINE)
REG(LOAD)
Dropout Voltage(2)
EZ1584
Current Limit
Quiescent Current
Fixed Voltage Version
Temperature Coefficient
Adjust Pin Current
VD
ICL
IQ
TC
IADJ
Adjust Pin Current
Change
Temperature Stability
Minimum Load Current
Adj Voltage Version
RMS Output Noise(3)
Ripple Rejection Ratio(4)
∆IADJ
TS
IO
VN
RA
Test Conditions
VIN IO
5V 10mA
5V 10mA
0mA
10mA
5V
TJ(5)
25°C
O.T.
25°C
O.T.
25°C
O.T.
O.T.
25°C
O.T.
25°C
O.T.
O.T.
Test Limits
Min Typ Max Units
0.99lVOl
0.98lVOl
1.238
VO
VO
1.250
1.01lVOl
1.02lVOl
1.262
V
V
1.225
1.250 1.275
0.015 0.2 %
0.035
0.2
0.035
0.2
0.05 0.3 %
0.2 0.4
1V
1.1 1.3
7.1 9.0
A
5V O.T. 10 13 mA
O.T.
25°C
O.T.
0.005
55
%/°C
µA
90
O.T. 0.2 5 µA
5V
0.5A
O.T.
0.5
%
5V O.T. 5 10 mA
25°C
0.003
5V
7.0A O.T. 60
72
%VO
dB
NOTES:
(1) Low duty cycle pulse testing with Kelvin connections required.
(2) ∆VOUT, ∆VREF = 1%
(3) Bandwidth of 10 Hz to 10 kHz.
(4) 120 Hz input ripple (CADJ for ADJ = 25µF).
(5) Over Temp. (O.T.) = over specified operating junction temperature range.
© 1999 SEMTECH CORP.
2
652 MITCHELL ROAD NEWBURY PARK CA 91320
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