5.0 AMP POSITIVE
VOLTAGE REGULATOR
June 7, 1999
EZ1084
EZ1084B
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION
The EZ1084 series of high performance positive
voltage regulators are designed for use in applications
requiring low dropout performance at full rated current.
Additionally, the EZ1084 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 EZ1084 has both fixed and
adjustable voltage options, while the EZ1084B is
adjustable only for cost sensitive applications. These
devices are available in the popular TO-220 and TO-
263 packages.
FEATURES
•
Low dropout performance,
•
•
•
•
•
•
•
•
1.3V max. for EZ1084,
1.45V max. for EZ1084B
Full current rating over line and temperature
Fast transient response
±2% total output regulation over line, load
and temperature (±2.4% for EZ1084B)
Adjust pin current max 90µA over temperature
Fixed/adjustable output voltage (EZ1084)
Line regulation typically 0.015%
Load regulation typically 0.05%
TO-220 and TO-263 packages
ORDERING INFORMATION
DEVICE
PACKAGE
TO-263
(2)
V
OUT
VOLTS
See Note (1)
1.30 to 5.7
See Note (1)
1.30 to 5.7
APPLICATIONS
•
High current microprocessor supplies
•
Post regulators
BLOCK DIAGRAM
EZ1084CM-X.X
EZ1084BCM
EZ1084CT-X.X
EZ1084BCT
TO-220
Notes:
(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.
(2) Add suffix ‘TR’ for tape and reel (TO-263).
ABSOLUTE MAXIMUM RATINGS
Parameter
Input Supply Voltage
Power Dissipation
Thermal Resistance
Junction to Case
TO-220
TO-263
Thermal Resistance
Junction to Ambient
TO-220
TO-263
Operating Junction
Temperature Range
Storage
Temperature Range
Lead Temperature
(Soldering) 10 Sec
Symbol
V
IN
P
D
Maximum
7
Internally
Limited
Units
V
W
PIN CONFIGURATIONS
θ
JC
2.5
2.5
°C/W
θ
JA
T
J
T
STG
T
LEAD
50
60
0 to 125
-65 to 150
260
°C/W
°C
°C
°C
1
© 1999 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320