1.5A Low Dropout Voltage Regulator
Product Description
The GS1086L is a low dropout three-terminal
regulator with 1.5A output current capability. In
order to obtain lower dropout voltage and fast
transient response, this is critical for low voltage
applications. The GS1086L has been optimized.
The device is available in an adjustable version
and fixed output voltage of 1.5V, 1.8V, 2.5V, 3.3V
and 5V. Dropout voltage is guaranteed at a
maximum of 1.3V at 1.5A.
Current limit is trimmed to ensure specified output
current and controlled short circuit current.
On-chip thermal limiting provides protection
against any combination of overload that would
create excessive junction temperatures.
The GS1086L is available in the three leads
SOT-223, TO-252 and TO-263 surface mount
packages.
Features
Adjustable or Fixed Output
Current Limit and Thermal Protection
Output Current of 1.5A
1.3V Dropout Voltage
Line Regulation typically at 0.04% Max.
Load Regulation typically at 0.2% Max.
Applications
Battery-Power Circuitry
Post Regulator for Switching Power Supply
Low Voltage Logic Suppliers
Block Diagram
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GS1086L
1
Packages & Pin Assignments
GS1086LM
(TO-263)
GS1086LD
(TO-252)
GS1086LX
(SOT-223)
TAB
GS1085LM-xxF
1
2
3
1
2
3
GND/ADJ
V
OUT
V
IN
1
2
3
GND/ADJ
V
OUT
V
IN
1
2
3
GND/ADJ
V
OUT
V
IN
Ordering Information
TO-263
GS1086LM
GS1086LM15
GS1086LM18
GS1086LM25
GS1086LM33
GS1086LM50
TO-252
GS1086LD
GS1086LD15
GS1086LD18
GS1086LD25
GS1086LD33
GS1086LD50
SOT-223
GS1086LX
GS1086LX15
GS1086LX18
GS1086LX25
GS1086LX33
GS1086LX50
Output
ADJ
1.5V
1.8V
2.5V
3.3V
5.0V
Adjustable Version does not need Voltage Code.
Marking Information
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GS1086L
2
Absolute Maximum Ratings
Symbol
V
IN
θ
JC
Parameter
Input Voltage
Thermal Resistance
(Junction to Case)
TO-263
TO-252
SOT-223
TO-263
TO-252
SOT-223
Maximum
15V
3ºC /W
5ºC/W
15ºC/W
62.5ºC/W
90ºC/W
160ºC/W
Internally Limited
-40ºC to 125ºC
-65ºC to 150ºC
260ºC
θ
JA
Thermal Resistance
(Junction to Ambient)
Internal Power Dissipation
Operating Junction Temperature
Storage Temperature Range
Lead Temperature (10 sec)
P
D
T
J
T
STG
T
LEAD
Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. These are stress ratings only and functional operation of the device at these or any other
conditions above those indicated in the operation sections of the specifications is not implied.
Exposure to Absolute Maximum Ratings conditions for extended periods may affect device reliability.
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GS1086L
3
Electrical Characteristics
I
OUT
= 0 mA, and T
J
= +25°C, unless otherwise noted
Parameter
Reference Voltage
(Note3)
Device
GS1086L
Conditions
V
IN
=2.75V, I
LOAD
=10mA
*V
IN
=2.7V to 12V,
I
LOAD
=10mA to 1.5A
V
IN
=4.0V
*V
IN
=3.0V,
I
LOAD
=10mA to 1.5A
V
IN
=4.3V
*V
IN
=3.3V,
I
LOAD
=10mA to 1.5A
V
IN
=5.0V
*V
IN
=4.0V,
I
LOAD
=10mA to 1.5A
V
IN
=5.8V
*V
IN
=4.8V,
I
LOAD
=10mA to 1.5A
V
IN
=7.5V
*V
IN
=6.5V,
I
LOAD
=10mA to 1.5A
*I
LOAD
=10mA,
(1.5V+V
OUT
)≤V≤12V
*V
IN
= V
OUT
+1.5V,
I
LOAD
=10mA to 1.5A
*V
IN
=5V, V
ADJ
=0V
*V
IN
= V
OUT
+1.5V,
I
LOAD
=10mA to 1.5A
*V
IN
=2.65V to 12V, I
LOAD
=10mA
*V
IN
- V
OUT
=1.5V
V
IN
= V
OUT
+1.5V,
I
LOAD
=10mA
MIN
1.238
1.225
1.485
1.476
1.782
1.771
2.475
2.460
3.267
3.247
4.950
4.900
TYP
1.250
1.250
1.500
1.500
1.800
1.800
2.500
2.500
3.300
3.300
5.000
5.000
0.04
0.2
3
7
55
MAX
1.262
1.275
1.515
1.524
1.818
1.829
2.525
2.540
3.333
3.353
5.050
5.100
0.2
0.4
7
13
90
Unit
V
V
V
V
V
V
V
V
V
V
V
V
%
%
mA
mA
μA
A
dB
GS1086L15
GS1086L18
Output Voltage
GS1086L25
GS1086L33
GS1086L50
Line Regulation
(Note1)
Load Regulation
(Note1)
Minimum Load
Current
Ground Pin Current
Adjust Pin Current
Current Limit
Ripple Rejection
(Note 2)
Dropout Voltage
(Note 1,3)
Temperature
Coefficient
All
All
GS1086L
GS1086L-XX
GS1086L
All
All
All
1.5
60
2.2
65
1.00
1.3
0.005
1.15
1.5
V
V
%/ºC
*V
IN
≥2.65V,
I
LOAD
=1.5A
*V
IN
=V
OUT
=1.5V,
I
LOAD
=10mA
All
The
*
denotes the specifications which apply over the full temperature range.
Note 1:
Low duty pulse testing with Kelvin connections required.
Note 2:
120Hz input ripple (C
ADJ
for ADJ=25μF)
Note 3:
ΔV
OUT
,
ΔV
REF
=1%
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GS1086L
4
Typical Applications
Vin
IN
OUT
Vout
Vref
1.25V
Vin
IN
OUT
Vout
GS1086L
R1
Cin
GS1086L-xx
Cin
10uF/Tantalum
Cout
ADJ
GND
Cout
10uF/Tantalum
EN
Iadj
50uA
R2
I
GND
V
OUT
=V
REF
(1+R2/R1)+I
ADJ
R2
Figure1. Adjustable Voltage Regulator
Figure2. Fixed Voltage Regulator
Typical Performance Characteristics
Minimum Operating Current
(Adjustable Device)
Minmum Operating Current(mA)
12
Short-Circuit Current
1.25
Short Circuit Current(A)
1.00
0.75
0.50
0.25
0
0
10
5
Input/Output Diffierential
15
T
J
=125℃
T
J
=25℃
9
T
J
=125℃
T
J
=25℃
6
3
0
0
5
10
15
20
Input/Output differential(V)
Load Regulation
Output Voltage Deviation(%)
0.10
△I
LOAD
=1A
Ripple Rejection vs.Current
100
90
80
70
60
50
40
30
20
10
0
0
f
RIPPLE
=120Hz
V
RIPPLE≦
3V
P-P
f
RIPPLE
=20Hz
V
OUT
=5V
C
ADJ
=25μF
C
OUT
=25μF
0.25
0
-0.05
-0.10
-0.15
-0.20
-50 -25
0
25
50
75
100 125
Ripple Rejection(dB)
0.05
Temperature(℃)
Output Current(A)
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GS1086L
5
0.5
0.75
1.0
