AP1117
1A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
General Description
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, 2.5V, 3.3V,
5.0V
Lead Free Packages: SOT223-3L, TO252-3L,
SOT89-3L, TO263-3L and TO220-3L
SOT223-3L, TO252-3L, SOT89-3L, TO263-3L and
TO220-3L: Available in “Green” Molding Compound
(No Br, Sb)
Lead Free Finish/RoHS Compliant (Note 1)
AP1117 is a low dropout positive adjustable or fixed-mode
regulator with 1A output current capability. The product is voltage
specifically designed to provide well-regulated supply for low
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. AP1117 is available in commercial temperature
grade.
Applications
•
•
PC Peripheral
Communication
Typical Application Circuit
5V
5V
C1
10uF
C1
10uF
VIN
VIN
VOUT
GND
C2
22uF
Adj
Tab is VOUT
R1
121 Ω
R2
121 Ω
2.5V/1A
C2
22uF
Tab is VOUT
( 5V/3.3V fixed output )
( 5V/2.5V ADJ output )
Note:
AP1117 Rev. 19
DS31009
Vo
VOUT
3.3V/1A
1 of 12
www.diodes.com
Vo = VREF × (1 +
R2
)
R1
JANUARY 2010
© Diodes Incorporated
AP1117
1A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Ordering Information
A P 1 1 1 7 X XX X - X
Package
D : TO252-3L
E : SOT223-3L
K : TO263-3L
T : TO220-3L
Y : SOT89-3L
Device
AP1117DXXL-13
AP1117DXXG-13
AP1117EXXL-13
AP1117EXXG-13
AP1117KXXL-13
AP1117KXXG-13
AP1117TXXL-U
AP1117TXXG-U
AP1117YXXL-13
AP1117YXXG-13
Notes:
Vout
Blank : Adj
15 : 1.5V
18 : 1.8V
25 : 2.5V
33 : 3.3V
50 : 5.0V
Package
Code
Packaging
(Note 2)
D
D
E
E
K
K
T
T
Y
Y
TO252-3L
TO252-3L
SOT223-3L
SOT223-3L
TO263-3L
TO263-3L
TO220-3L
TO220-3L
SOT89-3L
SOT89-3L
Lead Free
L : Lead Free
G : Green
Tube
Part Number
Quantity
Suffix
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
50
-U
50
-U
NA
NA
NA
NA
Packing
U : Tube
13 : Tape & Reel
13” Tape and Reel
Part Number
Quantity
Suffix
2500/Tape & Reel
-13
2500/Tape & Reel
-13
2500/Tape & Reel
-13
2500/Tape & Reel
-13
800/Tape & Reel
-13
800/Tape & Reel
-13
NA
NA
NA
NA
2500/Tape & Reel
-13
2500/Tape & Reel
-13
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
2. 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. 19
DS31009
2 of 12
www.diodes.com
JANUARY 2010
© Diodes Incorporated
AP1117
1A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Pin Assignments
(1) SOT89-3L
(2) SOT223-3L
( Top View )
( Top View )
3
VIN
3
VIN
2
VOUT
2
VOUT
1
Adj (GND)
Adj (GND)
1
Tab is VOUT
Tab is VOUT
(3) TO220-3L
(4) TO252-3L and TO263-3L
( Top View )
( Front View )
VIN
3
3
VIN
2
VOUT
1
Adj (GND)
2
1
VOUT
Adj (GND)
Tab is VOUT
Tab is VOUT
Pin Descriptions
Pin Name
I/O
PIN #
Adj (GND)
I
1
VOUT
O
2
VIN
I
3
AP1117 Rev. 19
DS31009
Description
A resistor divider from this pin to the VOUT 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.
The input pin of regulator. Typically a large storage capacitor 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 VOUT in order for the device to regulate
properly.
3 of 12
www.diodes.com
JANUARY 2010
© Diodes Incorporated
AP1117
1A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Block Diagram
3
VIN
2
VOUT
+
-
+
1.25V
+
CURRENT
LIMIT
1
GND
(FIXED)
+
1
-
Thermal
Shutdown
Adj
Absolute Maximum Ratings
Symbol
Notes:
Parameter
VIN
DC Supply Voltage
TMJ
Maximum Junction Temperature
PD
Power Dissipation
SOT89-3L
SOT223-3L
TO220-3L
TO252-3L
TO263-3L
TST
Storage Temperature
Rating
Unit
-0.3 to 18
V
150
oC
Internally limited by maximum
junction temperature
of 150 oC (Note 3)
mW
-65 to +150
oC
3. AP1117 contains an internal thermal limiting circuit that is designed to protect the regulator in the event that the maximum junction
temperature exceeded. When activated, typically at 150°C, the regulator output switches off and then back on as the die cools.
Recommended Operating Conditions
Symbol
TOP
AP1117 Rev. 19
DS31009
Parameter
Operating Junction Temperature Range
4 of 12
www.diodes.com
Min
Max
0
125
Unit
oC
JANUARY 2010
© Diodes Incorporated
AP1117
1A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Electrical Characteristics
(Under Operating Conditions)
Parameter
Conditions
Min
Typ.
Max
Unit
1.225
1.250
1.275
V
1.470
1.500
1.530
V
1.764
1.800
1.836
V
2.450
2.500
2.550
V
3.235
3.300
3.365
V
4.900
5.000
5.100
V
0.2
%
1
%
12
15
mV
15
18
mV
20
25
mV
26
33
mV
40
50
mV
1.3
1.4
V
o
Reference Voltage
AP1117-ADJ
AP1117-1.5
TA = 25 C, (VIN-OUT) = 1.5V
IO = 10mA
o
IOUT = 10mA, TA = 25 C,
3V≦VIN≦12V
o
AP1117-1.8
IOUT = 10mA, TA = 25 C,
3.3V≦VIN≦12V
o
Output Voltage
AP1117-2.5
IOUT = 10mA, TA = 25 C,
4V≦VIN≦12V
o
AP1117-3.3
IOUT = 10mA, TA = 25 C,
4.8V≦VIN≦12V
o
AP1117-5.0
Line Regulation
AP1117-XXX
AP1117-ADJ
AP1117-1.5
AP1117-1.8
Load Regulation
AP1117-2.5
AP1117-3.3
AP1117-5.0
Dropout Voltage
(VIN-VOUT)
Current Limit
Minimum Load Current
(Note 6)
Thermal Regulation
Ripple Rejection
Temperature Stability
θ JA Thermal Resistance
Junction-to-Ambient
θ JC Thermal Resistance
Junction-to-Case
Notes:
AP1117-ADJ/1.5/1.8
/2.5/3.3/5.0
AP1117-ADJ/1.5/1.8
/2.5/3.3/5.0
AP1117-XXX
IOUT = 10mA, TA = 25 C,
6.5V≦VIN≦12V
IO = 10mA,VOUT+1.5V
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