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 and PowerDI™5 (Under Development)
packages
General Description
AP1117 is a low dropout positive adjustable or fixed-mode
regulator with minimum of 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 12V input supply.
Pin Connections
•
•
PC peripheral
Communication
Ordering Information
AP 1117 X XX X X
Low Dropout Regulator
Package
SK : SOT223-3L
PB : PowerDI™5
Vout
Blank : ADJ
15 : 1.5V
18 : 1.8V
19: 1.9V
25 : 2.5V
33 : 3.3V
50 : 5.0V
Lead Free
Blank : Lead-Free
G
: Green
Packing
Blank : Tube or bulk
-7/-13 : Taping
Device
(Note 1)
AP1117SK
AP1117SK15
AP1117SK18
AP1117SK19
AP1117SK25
AP1117SK33
AP1117SK50
AP1117PB
AP1117PB15
AP1117PB18
AP1117PB19
AP1117PB25
AP1117PB33
AP1117PB50
Package Packaging
Code
(Note 2)
SK
SK
SK
SK
SK
SK
SK
PB
PB
PB
PB
PB
PB
PB
SOT-223
SOT-223
SOT-223
SOT-223
SOT-223
SOT-223
SOT-223
PowerDI™5
PowerDI™5
PowerDI™5
PowerDI™5
PowerDI™5
PowerDI™5
PowerDI™5
7” Tape and Reel
Quantity
Part
Number
Suffix
500/Tape & Reel
500/Tape & Reel
500/Tape & Reel
500/Tape & Reel
500/Tape & Reel
500/Tape & Reel
500/Tape & Reel
NA
NA
NA
NA
NA
NA
NA
-7
-7
-7
-7
-7
-7
-7
NA
NA
NA
NA
NA
NA
NA
13” Tape and Reel
Quantity
Part
Number
Suffix
2500/Tape & Reel
2500/Tape & Reel
2500/Tape & Reel
2500/Tape & Reel
2500/Tape & Reel
2500/Tape & Reel
2500/Tape & Reel
2500/Tape & Reel
2500/Tape & Reel
2500/Tape & Reel
2500/Tape & Reel
2500/Tape & Reel
2500/Tape & Reel
2500/Tape & Reel
-13
-13
-13
-13
-13
-13
-13
-13
-13
-13
-13
-13
-13
-13
DS30715 Rev. 2 - 2
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AP1117
©
Diodes Incorporated
AP1117
1A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Typical Application Circuit
5V
C1
100uF
Vin
Vout
GND
Tab is Vout
3.3V/1A
C2
100uF
Vin
Vout
Adj
Tab is Vout
R1
121
Ω
R2
121
Ω
V
o
2.5V/1A
5V
C1
100uF
C2
100uF
( 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 Vout
Vin
Vout
Adj (GND)
3 Vin
Vout 1
2 Adj (GND)
3 PIN PowerDI™5
( Top View )
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AP1117
©
Diodes Incorporated
AP1117
1A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Block Diagram
Vin
3
2
Vout
+
-
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 Vout pin and ground sets the output voltage.
(Ground only for Fixed-Mode)
Vout
O
2
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.
Vin
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 Vout in order for the device to regulate properly.
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AP1117
©
Diodes Incorporated
AP1117
1A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Absolute Maximum Ratings
Symbol
Vin
T
OP
T
MJ
DC Supply Voltage
Operating Junction Temperature Range
Maximum junction Temperature
Parameter
Rating
12 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
PowerDI™5
650
TBD
mW
T
ST
Storage Temperature
-65 to +150
oC
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AP1117
©
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
Thermal Regulation
Ripple Rejection
Temperature Stability
CONDITIONS
T
J
= 25 C, (V
IN
-
OUT
) =1.5V
I
O
=10mA
o
I
OUT
= 10mA, T
J
= 25 C,
3V≦V
IN
≦12V
o
I
OUT
= 10mA, T
J
= 25 C,
3.3V≦V
IN
≦12V
o
I
OUT
= 10mA, T
J
= 25 C,
3.3V≦V
IN
≦12V
o
I
OUT
= 10mA, T
J
= 25 C,
4V≦V
IN
≦12V
o
I
OUT
= 10mA, T
J
= 25 C,
4.8V≦V
IN
≦12V
o
I
OUT
= 10mA, T
J
= 25 C,
6.5V≦V
IN
≦12V
V
OUT
+1.5V<V
IN
<12V,
I
O
=10mA,
o
T
J
=25 C
V
IN
=3.3V,Vadj=0,0mA<Io<1A, T
J
o
= 25 C (Note 1,2)
V
IN
= 3V, 0mA<Io<1A,
o
T
J
= 25 C (Note 1,2)
V
IN
= 3.3V, 0mA<Io<1A,
o
T
J
= 25 C (Note 1,2)
V
IN
= 3.3V, 0mA<Io<1A,
o
T
J
= 25 C (Note 1,2)
V
IN
=4V, 0mA<Io<1A,
o
T
J
= 25 C (Note 1,2)
V
IN
= 5V, 0≦I
OUT
≦1A,
o
T
J
= 25 C (Note 1,2)
V
IN
= 8V, 0≦I
OUT
≦1A,
o
T
J
= 25 C (Note 1,2)
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
12
15
16
20
26
40
1.3
1. 1
5
0.008
60
0.5
117
TBD
15
TBD
15
18
19
25
33
50
1.4
AP1117-ADJ/1.5/1.8
I
OUT
= 1A,
∆V
OUT
=0.1%V
OUT
/1.9/2.5/3.3/5.0
AP1117-ADJ/1.5/1.8
(V
IN
-V
OUT
) = 5V
/1.9/2.5/3.3/5.0
o
o
0 C≦Tj≦125 C
AP1117-XXX
o
T
A
= 25 C, 30ms pulse
F =120Hz, C
OUT
= 25uF Tantalum, I
OUT
=1A
AP1117-XXX
V
IN
= V
OUT
+3V
I
O
=10mA
SOT-223
: Control Circuitry/Power Transistor
PowerDI™5 : Control Circuitry/Power Transistor
SOT-223
: Control Circuitry/Power Transistor
PowerDI™5 : Control Circuitry/Power Transistor
10
0.04
70
mA
%/W
dB
%
O
θ
JA
Thermal Resistance
Junction-to-Ambient(No
heat sink; No air flow)
C/W
θ
JC
Thermal Resistance
Junction-to-Case
Notes:
2.
O
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.
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AP1117
©
Diodes Incorporated
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