SEMTECH EZ1083

7.5 AMP POSITIVE
VOLTAGE REGULATOR
June 7, 1999
EZ1083
EZ1083B
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION
The EZ1083 series of high performance positive
voltage regulators are designed for use in applications
requiring low dropout performance at full rated current.
Additionally, the EZ1083 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 EZ1083 has both fixed and
adjustable voltage options, while the EZ1083B is
adjustable only for cost sensitive applications. These
devices are available in the popular TO-220 package.
FEATURES
• Low dropout performance,
•
•
•
•
•
•
•
•
1.3V max. for EZ1083,
1.45V max. for EZ1083B
Full current rating over line and temperature
Fast transient response
±2% total output regulation over line, load
and temperature (±2.4% for EZ1083B)
Adjust pin current max 90µA over temperature
Fixed/adjustable output voltage (EZ1083)
Line regulation typically 0.015%
Load regulation typically 0.05%
TO-220 package
ORDERING INFORMATION
DEVICE
APPLICATIONS
• High current microprocessor supplies
• Post regulators
BLOCK DIAGRAM
EZ1083CT-X.X
EZ1083BCT
PACKAGE
VOUT VOLTS
TO-220
See Note (1)
1.30 to 5.7
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
Input Supply Voltage
VIN
7
V
PD
Internally
Limited
W
Thermal Resistance
Junction to Case
θJC
2
°C/W
Thermal Resistance
Junction to Ambient
θJA
50
°C/W
Operating Junction
Temperature Range
TJ
0 to 125
°C
Storage Temperature
Range
TSTG
-65 to 150
°C
Lead Temperature
(Soldering) 10 Sec.
TLEAD
260
°C
Power Dissipation
PIN CONFIGURATIONS
Symbol Maximum Units
1
© 1999 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
7.5 AMP POSITIVE
VOLTAGE REGULATOR
EZ1083
EZ1083B
June 7, 1999
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, Adj VIN = 2.75V to 7.0V and Adj IO = 10mA to 7.5A;
Fixed VIN = 4.75 to 7.0V and Fixed IO = 0 mA to 7.5A
Test Conditions
Parameter
(1)
Output Voltage
Symbol
VIN
IO
VO
5V
0mA
TJ
EZ1083-X.X
Reference Voltage
(1)
VREF
5V
10mA
EZ1083
Reference Voltage
(1)
VREF
5V
10mA
EZ1083B
(1)
Line Regulation
REG(LINE)
(1)
REG(LOAD)
Load Regulation
(2)
10mA
5V
VD
Dropout Voltage
Test Limits
EZ1083, EZ1083-X.X
(5)
Min
Typ
Max
Units
25°C
0.99lVOl
VO
1.01lVOl
V
O.T.
0.98lVOl
VO
1.02lVOl
25°C
1.238
1.250
1.262
O.T.
1.225
1.250
1.275
25°C
1.233
1.250
1.267
O.T.
1.220
1.250
1.280
25°C
0.015
0.2
O.T.
0.035
0.2
25°C
0.05
0.3
O.T.
0.2
0.4
25°C
1
O.T.
1.10
1.30
1.20
1.45
EZ1083B
Current Limit
ICL
Quiescent Current
Fixed Voltage Version
IQ
Temperature Coefficient
Adjust Pin Current
O.T.
5V
7.5
O.T.
0.005
%/°C
IADJ
25°C
55
µA
5V
Minimum Load Current
Adj Voltage Version
IO
5V
0.5A
VN
Ripple Rejection Ratio
A
TC
TS
(4)
%
12
∆IADJ
(3)
%
O.T.
Temperature Stability
RMS Output Noise
V
V
9.5
O.T.
Adjust Pin Current
Change
V
RA
5V
7.5A
14
mA
90
O.T.
0.2
O.T.
0.5
O.T.
5
25°C
0.003
%VO
72
dB
O.T.
60
5
µA
%
10
mA
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.
2
© 1999 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
7.5 AMP POSITIVE
VOLTAGE REGULATOR
EZ1083
EZ1083B
June 7, 1999
TYPICAL APPLICATIONS
FIXED VOLTAGE REGULATOR
(1)(2)
ADJUSTABLE VOLTAGE REGULATOR
(1)(2)
EZ1083/EZ1083B
3
© 1999 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
7.5 AMP POSITIVE
VOLTAGE REGULATOR
EZ1083
EZ1083B
June 7, 1999
OUTLINE - TO-220
4
© 1999 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320