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
- Packages: SOT223, TO263, TO252, TO220,
SOT89
- Good noise rejection
- 3-Terminal Adjustable or Fixed 1.5V, 1.8V, 1.9V,
2.5V, 3.3V, 5.0V
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
Blank : Tube
A : Taping
Blank : ADJ Blank : Normal
15 : 1.5V
L : Lead Free Package
18 : 1.8V
19: 1.9V
25 : 2.5V
33 : 3.3V
50 : 5.0V
Typical Circuit
5V
C1
10uF
Vin
Vout
GND
Tab is Vout
C2
22uF
3.3V/1A
Vin
Vout
Adj
Tab is Vout
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
Rev.1.5 Aug 03, 2006
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
1/11
Packages - SOT223, TO252, SOT89 are
now available on Diodes' version datasheet
AP1117
1A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Connection Diagram
3 PIN SOT223
3 PIN TO252 / TO263
( Top View )
( Top View )
Vin
Vout
Adj (GND)
3
2
1
Tab is Vout
3
2
1
Tab is Vout
Vin
Vout
Adj (GND)
3 PIN SOT89
3 PIN TO220
3
2
1
Tab is Vout
Vin
Vout
Adj (GND)
3
2
1
Tab is Vout
Vin
Vout
Adj (GND)
Block Diagram
Vin
3
2
Vout
+
+
-
CURRENT
LIMIT
1.25V
+
1
+
Thermal
Shutdown
GND
(FIXED)
1
Adj
Anachip Corp.
www.anachip.com.tw
2/11
-
Rev.1.5 Aug 03, 2006
Packages - SOT223, TO252, SOT89 are
now available on Diodes' version datasheet
AP1117
1A Low Dropout Positive Adjustable or Fixed-Mode Regulator
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)
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
(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.
Vout
O
2
Vin
I
3
Absolute Maximum Ratings
Symbol
Vin
T
OP
T
MJ
DC Supply Voltage
Operating Junction Temperature Range
Maximum junction Temperature
T
A
=25
o
C, T
J
=125
o
C
Parameter
Rating
-0.3 to 18
0 to +125
150
Unit
V
oC
oC
Power Dissipation
(No heat sink ;No air flow)
330
850
1050
1150
-65 to +150
mW
P
D
SOT89
SOT-223
TO-252
TO-220/263
Storage Temperature
T
ST
oC
Anachip Corp.
www.anachip.com.tw
3/11
Rev.1.5 Aug 03, 2006
Packages - SOT223, TO252, SOT89 are
now available on Diodes' version datasheet
AP1117
1A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Electrical Characteristics
(Under Operating Conditions)
PARAMETER
Reference Voltage
CONDITIONS
o
T
A
= 25 C, (V
IN
-
OUT
) =1.5V
AP1117-ADJ
I
O
=10mA
o
I
OUT
= 10mA, T
A
= 25 C,
AP1117-1.5
3VφV
IN
φ18V
o
I
OUT
= 10mA, T
A
= 25 C,
AP1117-1.8
3.3VφV
IN
φ18V
o
I
OUT
= 10mA, T
A
= 25 C,
AP1117-1.9
3.3VφV
IN
φ18V
o
I
OUT
= 10mA, T
A
= 25 C,
AP1117-2.5
4VφV
IN
φ18V
o
I
OUT
= 10mA, T
A
= 25 C,
AP1117-3.3
4.8VφV
IN
φ18V
o
I
OUT
= 10mA, T
A
= 25 C,
AP1117-5.0
6.5VφV
IN
φ18V
I
O
=10mA,V
OUT
+1.5V<V
IN
<12V,
AP1117-XXX
T
A
=25
o
C
V
IN
=3.3V,Vadj=0,0mA<Io<1A,
AP1117-ADJ
T
A
= 25
o
C (Note 1,2)
V
IN
= 3V, 0mA<Io<1A,
AP1117-1.5
T
A
= 25
o
C (Note 1,2)
V
IN
= 3.3V, 0mA<Io<1A,
AP1117-1.8
T
A
= 25
o
C (Note 1,2)
V
IN
= 3.3V, 0mA<Io<1A,
AP1117-1.9
T
A
= 25
o
C (Note 1,2)
V
IN
=4V, 0mA<Io<1A,
AP1117-2.5
T
A
= 25
o
C (Note 1,2)
V
IN
= 5V, 0φI
OUT
φ1A,
AP1117-3.3
T
A
= 25
o
C (Note 1,2)
V
IN
= 8V, 0φI
OUT
φ1A,
AP1117-5.0
T
A
= 25
o
C (Note 1,2)
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
AP1117-XXX
0
o
CφTjφ125
o
C
T
A
= 25
o
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
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
18
15
16
20
26
40
1.3
1. 1
5
0.008
60
0.5
117
10
0.04
70
15
18
19
25
33
50
1.4
UNIT
V
V
V
V
V
V
V
%
%
mV
mV
mV
mV
mV
mV
V
A
mA
%/W
dB
%
O
Output Voltage
Line Regulation
Load Regulation
Dropout Voltage
(V
IN
-V
OUT
)
Current Limit
Minimum Load Current
(Note 3)
Thermal Regulation
Ripple Rejection
Temperature Stability
θ
JA
Thermal Resistance
Junction-to-Ambient (No
heat sink; No air flow)
C/W
Note 1: 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.
Note 2: 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.
Note 3: 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.
Anachip Corp.
www.anachip.com.tw
4/11
Rev.1.5 Aug 03, 2006
Packages - SOT223, TO252, SOT89 are
now available on Diodes' version datasheet
AP1117
1A Low Dropout Positive Adjustable or Fixed-Mode Regulator
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