Copyright
ANPEC Electronics Corp.
Rev. B.8 - Jun., 2003
APL1117
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.
1A 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 : 1.1V Typ. at I
OUT
=1A
Current Limit : 1A Typ. at T
J
=25
C
On-Chip Thermal Limiting : 150
C Typ.
Adjustable Output : 1.25~10.7V
Standard 3-pin TO-220, TO-252, TO-263 and
SOT-223 Power Packages
Features
Applications
Active SCSI Terminators
Low Voltage Logic Supplies
Battery-Powered Circuitry
Post Regulator for Switching Power Supply
General Description
The APL1117 is a low dropout three-terminal adjust-
able regulators with 1A output current capability. In
order to obtain lower dropout voltage and faster tran-
sient response, which is critical for low voltage ap-
plications , the APL1117 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 of an adjustable ver-
sion is from 1.25~10.7V with an input supply below
12V. Dropout voltage is guaranteed at a maximum of
1.3V at 1A. Current limit is trimmed to ensure speci-
fied output current and controlled short-circuit current.
On-chip thermal limiting provides protection against
any combination of overload that would create exces-
sive junction temperatures. The APL1117 is available
in the industry standard 3-pin TO-220, TO-252, TO-
263, and the low profile surface mount SOT-223
power packages which can be used in applications
where space is limited.
Pin Description
Front View for TO-252
TAB IS V
OUT
1
2
3
V
IN
V
OUT
ADJ/GND
Front View for TO-263
1
2
3
V
IN
V
OUT
ADJ/GND
TAB is V
OUT
Front View for TO-220
1
2
3
V
IN
V
OUT
ADJ/GND
Copyright
ANPEC Electronics Corp.
Rev. B.8 - Jun., 2003
APL1117
www.anpec.com.tw
2
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 : 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 1 1 7 -
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 1 1 7
X X X X X 2 5
X X X X X - D a te C o d e
A P L 1 1 1 7 -2 5 V :
A P L 1 1 1 7
X X X X X 3 3
X X X X X - D a te C o d e
A P L 1 1 1 7 -3 3 V :
A P L 1 1 1 7 -3 3 F /G /U : A P L 1 1 1 7
X X X X X
3 3
A P L 1 1 1 7 -2 5 F /G /U : A P L 1 1 1 7
X X X X X
2 5
A P L 1 1 1 7 -1 8 F /G /U :
A P L 1 1 1 7
X X X X X
- D a te C o d e
X X X X X
1 8
A P L 1 1 1 7
X X X X X 1 8
X X X X X - D a te C o d e
A P L 1 1 1 7 -1 8 V :
A P L 1 1 1 7
X X X X X 2 8
X X X X X - D a te C o d e
A P L 1 1 1 7 -2 8 V :
A P L 1 1 1 7 -2 8 F /G /U :
A P L 1 1 1 7
X X X X X
2 8
A P L 1 1 1 7 F /G /U :
A P L 1 1 1 7
X X X X X
- D a te C o d e
X X X X X
A P L 1 1 1 7
X X X X X
X X X X X - D a te C o d e
A P L 1 1 1 7 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
Ordering and Marking Information
Symbol
Parameter
Rating
(Note)
Unit
V
I
Input Voltage APL1117, APL1117-33
APL1117-18, APL1117-25, APL1117-28
15
9
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
Absolute Maximum Ratings
Pin Description (Cont.)
T A B IS V
O U T
O U T
1
2
3
A D J /G N D
IN
Front View for SOT-223
Note : The values here show the absolute maximum rating, and for normal usage please refer the test condition in Electrical
Characteristics Table.
Copyright
ANPEC Electronics Corp.
Rev. B.8 - Jun., 2003
APL1117
www.anpec.com.tw
3
Electrical Characteristics (Cont.)
APL1117
Symbol
Parameter
Test Conditions
Min. Typ. Max.
Unit
V
REF
Reference Voltage 10mA
I
OUT
1A, 1.4V
(V
IN
-V
OUT
)
10.75V,
T
J
=0~125
C
1.225 1.250 1.275
V
V
OUT
Output Voltage
APL1117-18 T
J
=0~125
C,
0
I
OUT
1.5A, 3.5V
V
IN
9V,
1.764 1.800 1.836
APL1117-25 T
J
=0~125
C,
0
I
OUT
1A, 4V
V
IN
9V,
2.450 2.500 2.550
APL1117-28 T
J
=0~125
C,
0
I
OUT
1A, 4.25V
V
IN
9V,
2.790 2.850 2.910
APL1117-33 T
J
=0~125
C,
0
I
OUT
1A, 4.75V
V
IN
12V,
3.235 3.300 3.365
V
REG
LINE
Line Regulation
APL1117
APL1117-18
APL1117-25
APL1117-28
APL1117-33
I
OUT
=
10mA, 1.5V
(V
IN
-V
OUT
)
10.75V
(Note1)
I
OUT
=
0A, 3.5V
V
IN
9V
(Note1)
I
OUT
=
0A, 4V
V
IN
5.5V
(Note1)
I
OUT
=
0A, 4.25V
V
IN
5.15V
(Note1)
I
OUT
=
0A, 4.75V
V
IN
7.75V
(Note1)
0.03
1
1
1
1
0.2
6
6
6
6
%
mV
REG
LOAD
Load Regulation
APL1117
APL1117-18
APL1117-25
APL1117-28
APL1117-33
(V
IN
-V
OUT
)
=3V, 0
I
OUT
1A
(Note1)
V
IN
=3.5V, 0
I
OUT
1A
(Note1)
V
IN
=4V, 0
I
OUT
1A
(Note1)
V
IN
=4.25V, 0
I
OUT
1A
(Note1)
V
IN
=4.75V, 0
I
OUT
1A
(Note1)
0.1
1
1
1
1
0.4
10
10
10
10
%
mV
I
OUT
=100mA
(Note2)
1
1.1
V
D
Dropout Voltage
I
OUT
=500mA
(Note2)
I
OUT
=1A
(Note2)
1.05
1.1
1.2
1.3
V
I
LIMIT
Current Limit
(V
IN
-V
OUT
)=5V, T
J
=25
C
1000
mA
I
ADJ
Adjust Pin Current
APL1117
(V
IN
-V
OUT
)
=3V, I
OUT
=10mA
60
120
A
I
ADJ
Adjust Pin Current
Change APL1117
10mA
I
OUT
1A,
1.4V
(V
IN
-V
OUT
)
10.75V
0.2
5
A
I
O
Minimum Load
Current APL1117
(V
IN
-V
OUT
)=10.75V
(Note3)
1.7
mA
PSRR Ripple Rejection
f
RIPPLE
=120Hz, V
RIPPLE
=1V
P-P,
(V
IN
-V
OUT
)
=3V
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. B.8 - Jun., 2003
APL1117
www.anpec.com.tw
4
Electrical Characteristics (Cont.)
APL1117
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
I
Q
Quiescent Current
APL1117-18
APL1117-25
APL1117-28
APL1117-33
V
IN
9V
V
IN
9V
V
IN
9V
V
IN
12V
5.5
5.5
5.5
5.5
10
10
10
10
mA
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.
Copyright
ANPEC Electronics Corp.
Rev. B.8 - Jun., 2003
APL1117
www.anpec.com.tw
5
V
IN
1 0
F
APL1117
OUT
IN
ADJ
121
365
1%
1%
V
OUT
150
F
1 0
F
C1
R1
R2
+
+
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
V
IN
10
F
APL1117
OUT
IN
ADJ
TTL
121
365
1%
1%
+
1k
1k
100
F
5V
+
5V Regulator with Shutdown
V
IN
10
F
C
1*
V
OUT1
+
R1
R2
1k
APL1117
OUT
IN
ADJ
+
100
F
C
2
121
V
OUT
= 1.250V X
R1 + R2
R1
PDF 
ZIP