TIGER ELECTRONIC CO.,LTD
Product specification
5A LOW DROPOUT POSITIVE REGULATOR
Features
1. Dropout Voltage 1.3V at 5A Output Current.
2. Fast Transient Response.
3. Extremely Tight Line and Load Regulation.
4. Current Limiting and Thermal Protection.
5. Adjustable Output Voltage or Fixed 1.5V, 1.8V,
2.5V, 3.3V, 5.0V.
6. Standard 3-Pin Power Packages.
LM1084-XX
LM1084-XX
TO-220
TO-263
DESCRIPTION
The LM1084 is a low dropout three terminal
regulator with 5A output current capability. The
output voltage is adjustable with the use of a
resistor divider or fixed 1.5V, 1.8V, 2.5V, 3.3V and 5.0V.
Dropout voltage is guaranteed to be at maximum
of 1.4V with the maximum output current. Its low
dropout voltage and fast transient response make
it ideal for low voltage microprocessor applications.
Current limit and thermal protection provide
protection against any overload condition that
would create excessive junction temperatures.
TO-252
TO-263-2L
1. Adj(COM) 2. Output 3. Input
Electrical Characteristics ( Ta = 25
O
C)
(VIN=5V, TJ=25
°
C, IO=10mA, unless otherwise specified) (Note1)
PARAMETER
Reference Voltage
TEST CONDITIONS
LM1084 (ADJ)
LM1084-15, V
IN
=4.5V
LM1084-18, V
IN
=4.8V
MIN
1.225
1.470
1.764
2.450
3.235
4.90
-
TYP
1.25
1.50
1.80
2.50
3.30
5.00
0.015
MAX
1.275
1.530
1.836
2.55
3.365
5.10
0.2
0.6
UNIT
Output Voltage
LM1084-25, V
IN
=5.5V
LM1084-33, V
IN
=6.3V
LM1084-50, V
IN
=7.0V
ADJ : 2.65V
≤
V
IN
≤
7V
V
Line Regulation
Load Regulation
Dropout Voltage
Current Limit
GND Current (Fix)
Adjusted Pin Current
Adjusted Pin Current Change (
Δ
IADJ)
Temperature Stability
Minimum Load Current
RMS Output Noise (% of V
OUT
)
Ripple Rejection Ratio
V
OUT
=1.25V
Fix : V
OUT
+1.4V
≤
V
IN
≤
7V
10mA < I
O
< 5A
Δ
V
OUT
,
Δ
V
REF
=1%
10mA
≤
I
O
≤
5A
%
%
V
A
1.3
5.0
6.0
1.4
2.65V
≤
V
IN
≤
7V
2.65V
≤
V
IN
≤
7V
2.65V
≤
V
IN
≤
7V
I
O
=0.5A
2.0
55
0.2
0.5
5.0
0.003
10
120
5.0
10
mA
uA
uA
%
mA
%
dB
120Hz input ripple
C
OUT
=25
μ
F
(V
IN
-V
OUT
)=3V
60
72
Note:
Specifications are production tested at TA=25
°
C. Specifications over the -40
°
C to 85
°
C operating
temperature range are assured by design, characterization and correlation with Statistical Quality
Controls (SQC).
LM1084T-XXV *TO-220
LM1084SX3-XXV *TO-263
LM1084SX2-XXV *TO-263-2L
LM1084J-XXV *TO-252
TGS [ Tiger Electronic Co.,Ltd ]
