LT1084 5.0A LOW DROPOUT POSITIVE REGULATOR
Features:
Output Current - 5A
Maximum Input Voltage – 12V
Adjustable Output Voltage or Fixed
1.5V, 1.8V, 2.5V, 2.85V, 3.3V, 3.6V, 5V
Current Limiting and Thermal Protection
Standard 3-Pin Power Packages
PIN 1: GND
1
PIN 2: Vout
TO-3P
2 3
PIN 3: Vin
Applications:
Post Regulator for Switching DC/DC Converter
High Efficiency Liner Regulators
Battery Charger
Pin1:
Gnd
Pin2:Vout
Pin3:
Vin
TO-220
Operating Ratings:
Junction Temperature Range: -10°C to 125°C
Ordering Information:
Parameter Number
LT1084
LT1084T
LT1084D
TO-3P
TO-220
TO-252
Pin1:
Gnd
Pin2:Vout
Pin3:
Vin
Package
Block Diagram
LT1084 5.0A LOW DROPOUT POSITIVE REGULATOR
Electrical Characteristics:
Typicals and limits appearing in normal type apply for Tj=25 .
Limits appearing in Boldface type apply over the entire junction temperature range for operation
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Vref
Line Regu
Load Regu
Line Regu
Reference Voltage
Io=10mA, Tj=25C, (Vin-Vout)=1.5V 1.225
LT1084-Adj
I
OUT
=10mA,V
+1.5V<V
in
<12V
out
-
Vin=3.3, 0mA<Io<5A. Tj=25C
Note 1, 2
LT1084-1.5
Vin=3V, 0mA<Io<5A. Tj=25C
Note 1, 2
I
O
=10mA,Tj=25C,
3.3V<Vin<12V
1.764
Vin=3.3V, 0mA<Io<5A. Tj=25C
Note 1, 2
I
O
=10mA,Tj=25C,
4V<Vin<12V
2.450
LT1084-2.5
Vin=4V, 0mA<Io<5A. Tj=25C
Note 1, 2
I
O
=10mA,Tj=25C,
4.8V<Vin<12V
3.235
Vin=3V, 0mA<Io<5A. Tj=25C
Note 1, 2
I
O
=10mA,Tj=25C,
6.5V<Vin<12V
4.9
Vin=3V, 0mA<Io<5A. Tj=25C
Note 1, 2
Io=5.0A(
Vout=1% Vout)
-
5.1
5.0
-
-
-
Vin-Vout=5V
Io=10mA
-
-
-
1.250
1.275
V
0.2
%
1.0
1.530
15
1.836
18
2.55
25
3.365
33
5.10
50
1.4
-
-
-
-
-
V
mV
V
mV
V
mV
V
mV
V
mV
V
A
mA
%
C/W
I
O
=10mA,Tj=25C,
3V<Vin<12V
1.470
1.500
12
1.800
15
2.500
20
3.3
26
5.0
40
1.3
-
10.0
0.5
98
15
Load Regu
Line Regu
Load Regu
Line Regu
Load Regu
Line Regu
Load Regu
Line Regu
Load Regu
Dropout Voltage
V
Current Limite
Mini Load Current
Temperature Stability
T
hermal Resisity Junction-Amient
T
hermal Resisity Junction-Case
LT1084-1.8
LT1084-3.3
LT1084-5.0
ThjA
ThjC
Note1: See Thermal Regulation specifications for changes in output vol. due to heating effects. line and
load regulation are measured at a constant junction Temp. by low duty cycle pulse testing. Load
regulation ismeasured at the output lead=1/8" from the package
Note2: Line and load Regulation are guaranteed up to the max power dissipation of 15W power dissipation
is determined by the difference between input and output and the current. Guaranteed max power
dissipation will not be available over the full input/output range
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