Copyright
ANPEC Electronics Corp.
Rev. A.4 - Jun., 2003
APL1086
www.anpec.com.tw
1
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
1.5A Low Dropout Fast Response Positive Adjustable Regulator and Fixed
1.8V, 2.5V, 2.85V and 3.3V
Guaranteed Output Voltage Accuracy within 2%
Fast Transient Response
Guaranteed Dropout Voltage at Multiple
Currents
Load Regulation : 0.1% Typ.
Line Regulation : 0.03% Typ.
Low Dropout Voltage : 1.3V Typ. at I
OUT
=1.5A
Current Limit : 1.5A Min. at T
J
=125
C
On-Chip Thermal Limiting : 150
C Typ.
Adjustable Output : 1.25~10.7V
Standard 3-pin SOT-223, TO-252 , TO-220 and
TO-263 Power Packages.
Features
Applications
Active SCSI Terminators
Low Voltage Logic Supplies
Battery-Powered Circuitry
Post Regulator for Switching Power Supply
General Description
The APL1086 is a low dropout three-terminal adjust-
able regulators with 1.5A output current capability.
In order to obtain lower dropout voltage and faster
transient response, which is critical for low voltage
applications , the APL1086 has been optimized.
The device is available in an adjustable version and
fixed output voltages of 1.8V, 2.5V,2.85V and 3.3V,
the output available voltage range is from 1.25~10.
7V with an input supply below 12V. Dropout voltage
is guaranteed at a maximum of 1.45V 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 com-
bination of overload that would create excessive junc-
tion temperatures.
The APL1086 is available in the industry standard 3-
pin SOT-223, TO-252, TO-220 or TO-263 power
packages.
Pin Description
Front View for TO-252
TAB IS V
OUT
1
2
3
IN
OUT
ADJ/GND
TAB IS V
OUT
IN
OUT
ADJ/GND
1
2
3
Front View for SOT-223
Copyright
ANPEC Electronics Corp.
Rev. A.4 - Jun., 2003
APL1086
www.anpec.com.tw
2
Ordering and Marking Information
Symbol
Parameter
Rating
Unit
V
I
Input Voltage
12
V
T
J
Operating Junction Temperature Range
Control Section
Power Transistor
0 to 125
0 to 150
C
T
STG
Storage Temperature Range
-65 to +150
C
T
L
Lead Temperature (Soldering, 10 second)
260
C
Pin Description
Front View for TO-220
Front View for TO-263
1
2
3
V
IN
V
O U T
AD J
TAB is V
O U T
1
2
3
V
IN
V
OUT
ADJ
P a c k a g e C o d e
F : T O -2 2 0 G : T O -2 6 3
U : T O -2 5 2 V : S O T -2 2 3
T e m p . R a n g e
C : 0 to 7 0 C
H a n d lin g C o d e
T U : T u b e T R : T a p e & R e e l
V o lta g e C o d e
1 8 : 1 .8 V 2 5 : 2 .5 V 2 8 5 : 2 .8 5 V 3 3 : 3 .3 V
B la n k : A d ju s ta b le V e rs io n
A P L 1 0 8 6 -
H a n d lin g C o d e
T e m p . R a n g e
P a c k a g e C o d e
V o lta g e C o d e
A P L 1 0 8 6
X X X X X 2 5
X X X X X - D a te C o d e
A P L 1 0 8 6 - 2 5 V :
A P L 1 0 8 6
X X X X X 3 3
X X X X X - D a te C o d e
A P L 1 0 8 6 - 3 3 V :
A P L 1 0 8 6 -3 3 F /G /U :
A P L 1 0 8 6
X X X X X
3 3
A P L 1 0 8 6 -2 5 F /G /U :
A P L 1 0 8 6
X X X X X
2 5
A P L 1 0 8 6 -1 8 F /G /U :
A P L 1 0 8 6
X X X X X
- D a te C o d e
X X X X X
1 8
A P L 1 0 8 6
X X X X X 1 8
X X X X X - D a te C o d e
A P L 1 0 8 6 - 1 8 V :
A P L 1 0 8 6
X X X X X 2 8 5
X X X X X - D a te C o d e
A P L 1 0 8 6 - 2 8 5 V
:
A P L 1 0 8 6 -2 8 5 F /G /U :
A P L 1 0 8 6
X X X X X
2 8 5
A P L 1 0 8 6 F /G /U :
A P L 1 0 8 6
X X X X X
X X X X X - D a te C o d e
A P L 1 0 8 6 V :
- D a te C o d e
X X X X X
- D a te C o d e
X X X X X
- D a te C o d e
X X X X X
A P L 1 0 8 6
X X X X X
- D a te C o d e
X X X X X
Absolute Maximum Ratings
Copyright
ANPEC Electronics Corp.
Rev. A.4 - Jun., 2003
APL1086
www.anpec.com.tw
3
Electrical Characteristics
APL1086
Symbol
Parameter
Test Conditions
Min. Typ. Max.
Unit
V
REF
Reference
Voltage
10mA
I
OUT
1.5A, 1.4V
(V
IN
-V
OUT
)
9.75V,
T
J
=0~125
C
1.225 1.250 1.275
V
Output Voltage
APL1086-18 T
J
=25C, I
OUT
=0mA,
T
J
=0~125
C,
0
I
OUT
1.5A, 3.5V
V
IN
9V,
1.782
1.764
1.800
1.800
1.818
1.836
APL1086-25 T
J
=25C, I
OUT
=0mA,
T
J
=0~125
C,
0
I
OUT
1.5A, 4V
V
IN
9V,
2.475
2.450
2.500
2.500
2.525
2.550
APL1086-28 T
J
=25C, I
OUT
=0mA,
T
J
=0~125
C,
0
I
OUT
1.5A, 4.25V
V
IN
9V,
2.822
2.792
2.850
2.850
2.878
2.910
V
OUT
APL1086-33 T
J
=25C, I
OUT
=0mA,
T
J
=0~125
C,
0
I
OUT
1.5A, 4.75V
V
IN
9V,
3.267
3.235
3.300
3.300
3.333
3.365
V
Line Regulation
APL1086
T
J
=0~125
C
I
OUT
=
10mA, 1.5V
V
IN
V
OUT
9V, (note1)
0.03
0.2
APL1086-18 I
OUT
=
0mA, 3.5V
V
IN
9V, (note1)
1
6
APL1086-25 I
OUT
=
0A, 4V
V
IN
9V, (note 1)
1
6
APL1086-28 I
OUT
=
0A, 4.25V
V
IN
9V, (note 1)
1
6
REG
LINE
APL1086-33 I
OUT
=
0A, 4.75V
V
IN
9V, (note 1)
1
6
%
mV
Load Regulation
APL1086
T
J
=0~125
C
(V
IN
-V
OUT
)
=3V, 0
I
OUT
1.5A ,(note 1)
0.1
0.4
APL1086-18 V
IN
=3.5V, 0
I
OUT
1.5A ,(note 1)
1
10
APL1086-25 V
IN
=4V, 0
I
OUT
1.5A ,(note 1)
1
10
APL1086-28 V
IN
=4.25V, 0
I
OUT
1.5A ,(note 1)
1
10
REG
LOAD
APL1086-33 V
IN
=4.75V, 0
I
OUT
1.5A ,(note 1)
1
10
%
mV
V
D
Dropout Voltage
I
OUT
=1.5A ,T
J
=0~125
C
1.3
1.45
V
I
LIMIT
Current Limit
(V
IN
-V
OUT
)=5V, T
J
=25
C
1500
mA
I
ADJ
Adjust Pin Current (V
IN
-V
OUT
)
=3V, I
OUT
=10mA, T
J
=0~125
C
60
120
A
I
ADJ
Adjust Pin Current
Change
T
J
=
0~125
C, 10mA
I
OUT
1.5A,
1.4V
(V
IN
-V
OUT
)
7.75V
0.2
5
A
I
O
Minimum Load
Current
T
J
=0~125
C, (V
IN
-V
OUT
)=7.75V, (note 3)
1.7
mA
PSRR Ripple Rejection
F
RIPPLE
=120Hz, V
RIPPLE
=1V
P-P,
(V
IN
-V
OUT
)
=3V, T
J
=0~125
C
60
75
dB
T
R
Thermal
Regulation
T
J
=25
C, 30ms Pulse
0.01
0.02
%/ W
T
S
Temperature
Stability
0.5
%
L
S
Long -Term
Stability
T
J
=125
C,1000Hrs.
0.3
%
Copyright
ANPEC Electronics Corp.
Rev. A.4 - Jun., 2003
APL1086
www.anpec.com.tw
4
APL1086
Symbol
Parameter
Test Conditions
Min. Typ. Max.
Unit
V
N
RMS Output
Noise
T
J
=25
C,10Hz
F
10kHz, (% of V
OUT
)
0.003
%
th
Thermal
Resistance
Junction to Case, at Tab
Junction to ambient
15
50
C/ W
OT
Over Temperature
Point
150
C
Quiescent Current
APL1086-18
T
J
=0~125
C,
V
IN
9V
5.5
10
APL1086-25 V
IN
9V
5.5
10
APL1086-28 V
IN
9V
5.5
10
APL1086-33 V
IN
9V
5.5
10
mA
Application Circuits
* C1 improves ripple rejection.
X
C
should be approximately
equal to R1 at ripple frequency
* Needed if device is far from filter capacitors
1.25V to 10.7V Adjustable Regulator
Improving Ripple Rejection
R1
R2
R1
1.250V
V
OUT
+
=
V
IN
1 0
F
APL1086
OUT
IN
ADJ
TTL
121
365
1%
1%
+
1k
1k
1 0 0
F
5V
+
5V Regulator with Shutdown
V
IN
1 0
F
APL1086
OUT
IN
ADJ
121
365
1%
1%
V
OUT
150
F
1 0
F
C1
R1
R2
+
+
V
IN
1 0
F
C
1*
V
OUT1
+
R1
R2
1k
APL1086
OUT
IN
ADJ
+
1 0 0
F
C
2
121
Note 1: See thermal regulation specifications for changes in output voltage due to heating effects. Load line regulations are mea-
sured at a constant junction temperature by low duty cycle pulse testing.
Note 2: Dropout voltage is specified over the full output current range of the device. Dropout voltage is defined as the minimum input/
output differential measured at the specified output current. Test points and limits are also shown on the Dropout Voltage curve.
Note 3: Minimum load current is defined as the minimum output current required to maintain regulation.
Electrical Characteristics (Cont.)
Copyright
ANPEC Electronics Corp.
Rev. A.4 - Jun., 2003
APL1086
www.anpec.com.tw
5
0.9
0.95
1
1.05
1.1
1.15
1.2
1.25
1.3
1.35
0
0.5
1
1.5
Dropout Voltage (V
)
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
-100
100
300
500
700
900
-0.03
-0.02
-0.01
0
0.01
0.02
Typical Characteristics
-20
30
80
130
180
-0.05
0
0.05
0.1
0.15
0
1
2
3
4
5
6
Dropout Voltage vs. Output Current
0
0.5
1
1.5
2
2.5
3
3.5
0
1
2
3
4
5
6
7
8
9
Output Voltage (V)
Output Voltage vs. Input Voltage
Output Current (A)
Input Voltage (V)
Load Transient Response
Output Current (A)
Output Voltage Deviation (V)
Time (
s)
Line Transient Response
Input Voltage (V)
Output Voltage Deviation (V)
Time (
s)
C
IN
=10
u
F
Cout=10
u
F Tantalum
V
IN
=5V
C
IN
=10
u
F
Cout=10
u
F Tantalum
I
OUT
=0.1A
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