AP1117
1A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Features
•
•
•
•
•
•
•
1.4V Maximum Dropout at Full Load Current
Fast Transient Response
Output Current Limiting
Built-in Thermal Shutdown
Good Noise Rejection
3-Terminal Adjustable or Fixed 1.5V, 1.8V, 1.9V, 2.5V,
3.3V, 5.0V
3-Pin SOT223-3L, TO263-3L, TO252-3L, TO220-3L,
SOT89-3L Packages
General Description
AP1117 is a low dropout positive adjustable or fixed-mode
regulator with 1A output current capability. The product is
specifically designed to provide well-regulated supply for low
voltage IC applications such as high-speed bus termination and
low current 3.3V logic supply. AP1117 is also well suited for other
applications such as VGA cards. AP1117 is guaranteed to have
lower than 1.4V dropout at full load current making it ideal to
provide well-regulated outputs of 1.25 to 5.0 with 6.4V to 18V
input supply.
Applications
•
•
PC Peripheral
Communication
Ordering Information
AP 1117 X XX X X
Low Dropout Regulator
Package
E : SOT223-3L
K : TO263-3L
D : TO252-3L
T : TO220-3L
Y : SOT89-3L
Vout
Lead Free
Packing
- U : Tube
-13 : Taping
Blank: ADJ
Blank: Normal
L
: Lead-Free
15 : 1.5V
18 : 1.8V
19: 1.9V
25 : 2.5V
33 : 3.3V
50 : 5.0V
Device
AP1117E
AP1117K
AP1117D
AP1117T
AP1117Y
Notes:
Tube/Bulk
Package Packaging
Quantity Part Number
Code
(Note 1)
Suffix
E
K
D
T
Y
SOT223-3L
TO263-3L
TO252-3L
TO220-3L
SOT89-3L
75
50
80
50
⎯
-U
-U
-U
-U
⎯
13” Tape and Reel
Quantity
Part Number
Suffix
2500/Tape & Reel
800/Tape & Reel
2500/Tape & Reel
⎯
2500/Tape & Reel
-13
-13
-13
⎯
-13
1. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
AP1117 Rev. 1
1 of 11
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AUGUST 2006
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Diodes Incorporated
AP1117
1A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Typical Application Circuit
5V
C1
10uF
V
in
V
out
GND
Tab is V
out
C2
22uF
3.3V/1A
V
in
V
out
Adj
Tab is V
out
R1
121
Ω
R2
121
Ω
V
o
2.5V/1A
5V
C1
10uF
C2
22uF
( 5V/3.3V fixed output )
( 5V/2.5V ADJ output )
Note:
V
o
=
V
REF
∗
(1
+
R
2
)
R
1
Connection Diagram
3 PIN SOT223
(Top View)
3
2
1
Tab is V
out
V
in
V
out
Adj ( GND)
3 PIN TO252 / TO263
( Top View)
3
2
1
Tab is V
out
V
out
Adj ( GND)
V
in
3 PIN SOT89
3 PIN TO220
3
2
1
V
in
V
out
Adj ( GND)
3
2
1
Tab is V
out
V
in
V
out
Adj ( GND)
Tab is V
out
AP1117 Rev. 1
2 of 11
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AUGUST 2006
©
Diodes Incorporated
AP1117
1A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Block Diagram
V
in
3
2
V
out
+
-
CURRENT
LIMIT
+
1.25V
+
1
+
Thermal
Shutdown
GND
(FIXED)
1
Adj
Pin Descriptions
NAME
Adj (GND)
I/O
I
PIN #
1
FUNCTION
A resistor divider from this pin to the V
out
pin and ground sets the output voltage
(Ground only for Fixed-Mode).
The output of the regulator. A minimum of 10uF capacitor (0.15Ω
≤
ESR
≤
20Ω)
must be connected from this pin to ground to insure stability.
V
out
O
2
V
in
I
3
The input pin of regulator. Typically a large storage capacitor (0.15Ω
≤
ESR
≤
20Ω)
is connected from this pin to ground to insure that the input voltage does not sag
below the minimum dropout voltage during the load transient response. This pin
must always be 1.3V higher than V
out
in order for the device to regulate properly.
AP1117 Rev. 1
3 of 11
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-
AUGUST 2006
©
Diodes Incorporated
AP1117
1A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Absolute Maximum Ratings
Symbol
V
in
T
OP
T
MJ
DC Supply Voltage
Operating Junction Temperature Range
Maximum Junction Temperature
Parameter
Rating
-0.3 to 18
0 to +125
150
Unit
V
oC
oC
Power Dissipation (No heat sink; No air flow)
o
o
T
A
= 25 C, T
J
= 125 C
P
D
SOT-223
SOT-89
TO-252
TO-220/263
650
330
1050
1150
mW
T
ST
Storage Temperature
-65 to +150
oC
AP1117 Rev. 1
4 of 11
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AUGUST 2006
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Diodes Incorporated
AP1117
1A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Electrical Characteristics
(Under Operating Conditions)
PARAMETER
Reference Voltage
AP1117-ADJ
AP1117-1.5
AP1117-1.8
AP1117-1.9
Output Voltage
AP1117-2.5
AP1117-3.3
AP1117-5.0
Line Regulation
AP1117-XXX
AP1117-ADJ
AP1117-1.5
AP1117-1.8
Load Regulation
AP1117-1.9
AP1117-2.5
AP1117-3.3
AP1117-5.0
Dropout Voltage
(V
IN
-V
OUT
)
Current Limit
Minimum Load Current
( Note 4)
Thermal Regulation
Ripple Rejection
Temperature Stability
AP1117-ADJ/1.5/1.8
/1.9/2.5/3.3/5.0
AP1117-ADJ/1.5/1.8
/1.9/2.5/3.3/5.0
AP1117-XXX
o
CONDITIONS
T
A
= 25 C, (V
IN
-
OUT
) = 1.5V
I
O
= 10mA
o
I
OUT
= 10mA, T
A
= 25 C,
3V
≦
V
IN
≦
12V
o
I
OUT
= 10mA, T
A
= 25 C,
3.3V
≦
V
IN
≦
12V
o
I
OUT
= 10mA, T
A
= 25 C,
3.3V
≦
V
IN
≦
12V
o
I
OUT
= 10mA, T
A
= 25 C,
4V
≦
V
IN
≦
12V
o
I
OUT
= 10mA, T
A
= 25 C,
4.8V
≦
V
IN
≦
12V
o
I
OUT
= 10mA, T
A
= 25 C,
6.5V
≦
V
IN
≦
12V
I
O
= 10mA,V
OUT
+1.5V<V
IN
<12V,
o
T
A
= 25 C
V
IN
=3.3V,Vadj=0,0mA<Io<1A,
o
T
A
= 25 C (Note 2, 3)
V
IN
= 3V, 0mA<Io<1A,
o
T
A
= 25 C (Note 2, 3)
V
IN
= 3.3V, 0mA<Io<1A,
o
T
A
= 25 C (Note 2, 3)
V
IN
= 3.3V, 0mA<Io<1A,
o
T
A
= 25 C (Note 2, 3)
V
IN
= 4V, 0mA<Io<1A,
o
T
A
= 25 C (Note 2, 3)
V
IN
= 5V, 0
≦
I
OUT
≦
1A,
o
T
A
= 25 C (Note 2, 3)
V
IN
= 8V, 0
≦
I
OUT
≦
1A,
o
T
A
= 25 C (Note 2, 3)
I
OUT
= 1A,
∆
V
OUT
= 0.1%V
OUT
(V
IN
-V
OUT
) = 5V
0 C
≦
Tj
≦
125 C
o
o
o
MIN
1.225
1.470
1.764
1.862
2.450
3.235
4.900
TYP
1.250
1.500
1.800
1.900
2.500
3.300
5.000
MAX
1.275
1.530
1.836
1.938
2.550
3.365
5.100
0.2
1
UNIT
V
V
V
V
V
V
V
%
%
mV
mV
mV
mV
mV
mV
V
A
18
15
16
20
26
40
1.3
1. 1
5
0.008
60
0.5
117
15
18
19
25
33
50
1.4
10
0.04
70
mA
%/W
dB
%
O
T
A
= 25 C, 30ms pulse
F = 180Hz, C
OUT
= 25uF Tantalum, I
OUT
= 1A
AP1117-XXX
V
IN
= V
OUT
+3V
I
O
= 10mA
SOT-223: Control Circuitry/Power Transistor
θ
JA
Thermal Resistance
Junction-to-Ambient (No
heat sink; No air flow)
Notes:
2.
C/W
See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant
junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead = 1/18” from the package.
3. Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the difference
between input and output differential and the output current. Guaranteed maximum power dissipation will not be available over the full
input/output range.
4. Quiescent current is defined as the minimum output current required in maintaining regulation. At 12V input/output differential the
device is guaranteed to regulate if the output current is greater than 10mA.
AP1117 Rev. 1
5 of 11
www.diodes.com
AUGUST 2006
©
Diodes Incorporated
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