0.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Features
•
•
•
•
•
•
•
General Description
AP1116 is a low dropout positive adjustable or
fixed-mode regulator with minimum of 0.5A 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.
AP1116 is also well suited for other applications
such as VGA cards. AP1116 is guaranteed to have
<1.3V dropout at full load current making it ideal to
provide well regulated outputs of 1.25V to 5V with
up to 18V input supply.
1.3V maximum dropout at full load current
Fast transient response
Output current limiting
Built-in thermal shutdown
Packages: SOT89
Good noise rejection
3-Terminal Adjustable or Fixed 1.5V / 1.8V / 2.5V
/ 3.3V / 5.0V
Applications
•
•
PC peripheral
Communication
Ordering Information
AP 1116 X XX X
Low Dropout Regulator
X
Lead Free
Blank : Normal
L : Lead Free Package
Package
Y : SOT89-3L
Vout
Blank : ADJ
15 : 1.5V
18 : 1.8V
25 : 2.5V
33 : 3.3V
50 : 5.0V
Packing
Blank : Tube
A : Taping
Typical Circuit
5V
C1
100uF
5V
C1
100uF
Vin
3.3V/
0.5A
C2
100uF
Tab is Vout
Vin
Vout
Vout
R1
121Ω
R2
121Ω
V
o
C2
100uF
2.5V/
0.5A
GND
Adj
Tab is Vout
( 5V/3.3V fixed output )
( 5V/2.5V ADJ output )
Note:
V
o
=
V
REF
∗
(1
+
R
2
)
R
1
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.
Rev. 1.0 Aug.27, 2004
1/5
AP1116
0.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Connection Diagram
3 PIN SOT89
3
2
1
Tab is Vout
Vin
Vout
Adj (GND)
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
V
IN
P
D
T
ST
T
OP
DC Supply Voltage
Power Dissipation
Storage Temperature
Operating Junction Temperature Range
Parameter
Rating
-0.3 to 18 V
Internally Limited
-65 to +150
0 to +150
o
o
Unit
V
C
C
Anachip Corp.
www.anachip.com.tw
2/5
Rev. 1.0 Aug.27, 2004
AP1116
0.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Electrical Characteristics
(Under Operating Conditions)
PARAMETER
Reference Voltage
AP1116-ADJ
AP1116-1.5
AP1116-1.8
Output Voltage
AP1116-2.5
AP1116-3.3
AP1116-5.0
Line Regulation
AP1116-XXX
AP1116-ADJ
AP1116-1.5
AP1116-1.8
Load Regulation
AP1116-2.5
AP1116-3.3
AP1116-5.0
Dropout Voltage
(V
IN
-V
OUT
)
Current Limit
Minimum Load
Current
Thermal Regulation
CONDITIONS
T
J
=25 C,(V
IN
-
OUT
)=1.5V
I
O
=10mA
I
OUT
= 10mA, T
J
= 25
o
C,
3V≦V
IN
≦12V
I
OUT
= 10mA, T
J
= 25
o
C,
3.3V≦V
IN
≦12V
I
OUT
= 10mA, T
J
= 25
o
C,
4V≦V
IN
≦12V
I
OUT
= 10mA, T
J
= 25
o
C,
4.8V≦V
IN
≦12V
I
OUT
= 10mA, T
J
= 25
o
C,
6.5V≦V
IN
≦12V
I
O
=10mA,V
OUT
+1.5V<V
IN
<15V,
T
J
=25
o
C
V
IN
=3.3V,Vadj=0,0mA<Io<0.5
A, T
J
=25
o
C (Note 1,2)
V
IN
=3V, 0mA<Io<0.5A,
o
T
J
=25 C (Note 1,2)
V
IN
=3.3V, 0mA<Io<0.5A,
o
T
J
=25 C (Note 1,2)
V
IN
=4V, 0mA<Io<0.5A,
T
J
=25
o
C (Note 1,2)
V
IN
= 5V, 0≦I
OUT
≦0.5A,
T
J
=25
o
C (Note 1,2)
V
IN
= 8V, 0≦I
OUT
≦0.5A,
T
J
=25
o
C (Note 1,2)
o
MIN
1.225
1.470
1.764
2.450
3.235
4.900
TYP
1.250
1.500
1.800
2.500
3.300
5.000
MAX
1.275
1.530
1.836
2.550
3.365
5.100
0.2
1
UNIT
V
V
V
V
V
V
%
%
mV
mV
mV
mV
mV
V
A
12
15
20
26
40
1.1
0.6
5
0.008
60
0.5
300
100
15
18
25
33
50
1.3
AP1116-ADJ/1.5/
I
OUT
= 0.5A,
∆V
OUT
=0.1%V
OUT
1.82.5/3.3/5.0
AP1116-ADJ/1.5/
(V
IN
-V
OUT
) = 5V
1.82.5/3.3/5.0
AP1116-XXX
0
o
C≦Tj≦125
o
C
10
0.04
70
mA
%/W
dB
%
O
T
A
=25℃, 30ms pulse
F=120Hz,C
OUT
=25uF Tantalum, I
OUT
=0.5A
Ripple Rejection
AP1116-XXX
V
IN
=V
OUT
+3V
Temperature Stability I
O
=10mA
SOT89 Thermal Resistance Junction-to-Ambient
θ
JA
(No heat sink; No air flow)
SOT89: Control Circuitry/Power Transistor
θ
JC
Thermal Resistance Junction-to-Case
C/W
C/W
O
Note1: 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.
Note2: Line and load regulation are guaranteed up to the maximum power dissipation of 5W. Power dissipation is determined by the
input/output differential and the output current. Guaranteed maximum power dissipation will not be available over the full
input/output range.
Note3: Quiescent current is defined as the minimum output current required to maintain 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
3/5
Rev. 1.0 Aug.27, 2004
AP1116
0.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Typical Performance Characteristics
2. 0
1. 8
0.20
Output Voltage Deviation (%)
1. 6
0
I load=500mA
Dropout Voltage (V)
1. 4
1. 2
1. 0
0. 8
0. 6
0. 4
0. 2
0
0
100
Tj = 125 C
o
Tj = 25
o
C
-0.20
-0.40
-0.80
Dropout Voltage vs Output Current
2
1.5
1
Output Current (mA)
200
300
400
500
-1
-25
0
Load Regulation vs Temperature
Temperature (
o
C)
25
50
75
100
125
Output Voltage Change (%)
1
0. 5
0
-0.5
-1
-1.5
-2
-50
-25
0
25
50
75
100
125
150
0.8
Output Voltage Deviation (%)
0.6
0.4
0.2
0
Percent Change in Output Voltage vs Temperature
Output Voltage Deviation (mV) Input Voltage (V)
Load Current (A) Output Voltage Deviation (mV)
7.5
6.5
5.5
40
20
0
-20
-40
Cin=1uF
Cout=10uF Tantalum
30
20
10
0
-10
-20
2
1
0
-1
0
10
20
Temperature ( C)
o
2
4
Line Regulation
C in = 1uF
C out = 10 uF Tantalum
Preload = 100mA
Input Voltage (V)
6
8
10
12
0
20
40
60
Line Transient Response
Anachip Corp.
www.anachip.com.tw
4/5
TIME (us)
80
100 120 140 160 180 200
30
Load Transient Response
TIME (us)
40
50
60
70
80
90
100
Rev. 1.0 Aug.27, 2004
AP1116
0.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator
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