AP1116
0.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator
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
Features
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
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.
Ordering Information
AP 1116 X XX X X
Low Dropout Regulator
Package
Vout
Y : SOT89-3L
Blank : ADJ
15 : 1.5V
18 : 1.8V
25 : 2.5V
33 : 3.3V
50 : 5.0V
Packing
Blank : Tube
A : Taping
Lead Free
Blank : Normal
L : Lead Free Package
Typical Circuit
C2
100uF
5V
3.3V/
0.5A
Tab is Vout
Vin
Vout
GND
C1
100uF
( 5V/3.3V fixed output )
R1
121
R2
121
C2
100uF
5V
2.5V/
0.5A
Tab is Vout
Vin
Vout
Adj
C1
100uF
o
V
( 5V/2.5V ADJ output )
)
1
2
REF
o
R
R
(1
V
V
+
=
Note:
AP1116
0.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Anachip Corp.
www.anachip.com.tw
Rev. 1.0 Aug.27, 2004
2/5
Connection Diagram
Adj (GND)
3 PIN SOT89
Vout
Vin
1
3
2
Tab is Vout
Pin Descriptions
NAME
I/O
PIN #
FUNCTION
Adj (GND)
I
1
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 (0.15
ESR 20) must be connected from this pin to ground to insure
stability.
Vin I 3
The input pin of regulator. Typically a large storage capacitor
(0.15 ESR 20) 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.
Absolute Maximum Ratings
Symbol
Parameter
Rating
Unit
V
IN
DC Supply Voltage
-0.3 to 18 V
V
P
D
Power Dissipation
Internally Limited
T
ST
Storage Temperature
-65 to +150
o
C
T
OP
Operating Junction Temperature Range
0 to +150
o
C
AP1116
0.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Anachip Corp.
www.anachip.com.tw
Rev. 1.0 Aug.27, 2004
3/5
Electrical Characteristics
(Under Operating Conditions)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
Reference Voltage
AP1116-ADJ
T
J
=25
o
C,(V
IN
-
OUT
)=1.5V
I
O
=10mA
1.225
1.250 1.275 V
AP1116-1.5
I
OUT
= 10mA, T
J
= 25
o
C,
3VV
IN
12V
1.470
1.500 1.530 V
AP1116-1.8
I
OUT
= 10mA, T
J
= 25
o
C,
3.3VV
IN
12V
1.764
1.800 1.836 V
AP1116-2.5
I
OUT
= 10mA, T
J
= 25
o
C,
4VV
IN
12V
2.450
2.500 2.550 V
AP1116-3.3
I
OUT
= 10mA, T
J
= 25
o
C,
4.8VV
IN
12V
3.235
3.300 3.365 V
Output Voltage
AP1116-5.0
I
OUT
= 10mA, T
J
= 25
o
C,
6.5VV
IN
12V
4.900
5.000 5.100 V
Line Regulation
AP1116-XXX
I
O
=10mA,V
OUT
+1.5V<V
IN
<15V,
T
J
=25
o
C
0.2
%
AP1116-ADJ
V
IN
=3.3V,Vadj=0,0mA<Io<0.5
A, T
J
=25
o
C (Note 1,2)
1
%
AP1116-1.5
V
IN
=3V, 0mA<Io<0.5A,
T
J
=25
o
C (Note 1,2)
12 15
mV
AP1116-1.8
V
IN
=3.3V, 0mA<Io<0.5A,
T
J
=25
o
C (Note 1,2)
15 18
mV
AP1116-2.5
V
IN
=4V, 0mA<Io<0.5A,
T
J
=25
o
C (Note 1,2)
20 25
mV
AP1116-3.3
V
IN
= 5V, 0I
OUT
0.5A,
T
J
=25
o
C (Note 1,2)
26 33
mV
Load Regulation
AP1116-5.0
V
IN
= 8V, 0I
OUT
0.5A,
T
J
=25
o
C (Note 1,2)
40 50
mV
Dropout Voltage
(V
IN
-V
OUT
)
AP1116-ADJ/1.5/
1.82.5/3.3/5.0
I
OUT
= 0.5A,
V
OUT
=0.1%V
OUT
1.1 1.3 V
Current Limit
AP1116-ADJ/1.5/
1.82.5/3.3/5.0
(V
IN
-V
OUT
) = 5V
0.6
A
Minimum Load
Current
AP1116-XXX
0
o
CTj125
o
C
5 10
mA
Thermal Regulation
T
A
=25, 30ms pulse
0.008
0.04 %/W
F=120Hz,C
OUT
=25uF Tantalum, I
OUT
=0.5A
Ripple Rejection
AP1116-XXX V
IN
=V
OUT
+3V
60
70
dB
Temperature Stability I
O
=10mA
0.5
%
JA
SOT89 Thermal Resistance Junction-to-Ambient
(No heat sink; No air flow)
300
O
C/W
JC
SOT89: Control Circuitry/Power Transistor
Thermal Resistance Junction-to-Case
100
O
C/W
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.
AP1116
0.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Anachip Corp.
www.anachip.com.tw
Rev. 1.0 Aug.27, 2004
4/5
Typical Performance Characteristics
Temperature (
o
C)
Percent Change in Output Voltage vs Temperature
Output Voltage Change (%)
-50
-25
0
25
50
75
100
125
150
- 2
-1.5
- 1
-0.5
0
0. 5
1
1.5
2
Input Voltage (V)
Line Regulation
Output Voltage Deviation (%)
0
0.2
0.4
0.6
0.8
1
2
4
6
8
10
12
TIME (us)
Line Transient Response
Out
put
Volt
age Deviat
ion (
m
V)
I
nput
Volt
age (
V
)
-40
-20
0
20
40
5.5
6.5
7.5
Cin=1uF
Cout=10uF Tantalum
0
20
40
60
80
100 120 140 160 180 200
TIME (us)
Load Transient Response
Load Cur
r
ent
(
A
)
Out
put
Volt
age Deviat
ion (
m
V)
0
10
20 30
40
50
60
70
80
90 100
-1
0
1
2
-20
-10
0
10
20
30
C in = 1uF
C out = 10 uF Tantalum
Preload = 100mA
Output Current (mA)
Dropout Voltage vs Output Current
Dropout Voltage (V)
0
0. 2
0. 4
0. 6
0. 8
1. 0
1. 2
1. 4
1. 6
1. 8
2. 0
0
100
200
300
400
Tj = 125
o
C
Tj = 25
o
C
Temperature (
o
C)
Load Regulation vs Temperature
Output Voltage Deviation (%)
-25
0
25
50
75
100
125
- 1
-0.80
-0.40
-0.20
0
0.20
I load=500mA
500
AP1116
0.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Anachip Corp.
www.anachip.com.tw
Rev. 1.0 Aug.27, 2004
5/5
Marking Information
1
3
2
Date Code
Month: A~L
Year: 0~9
Identification Code
( See the table )
Blank: normal
L: Lead Free Package
XX
XX X
SOT89-3
Identification code
Output version
JE AP1116-ADJ
JF AP1116-1.5V
JG AP1116-1.8V
JH AP1116-2.5V
JI AP1116-3.3V
JJ AP1116-5.0V
Package Dimension
L
HE
E
D1
e1
e
A
D
b1
b
b
8
0
(2x)
1.7
c
0.4
0.9
2.
7
1.3
1.
9
5
0
(2x)
Land Pattern Recommendation (Unit: mm)
1.5
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min.
Nom.
Max.
Min.
Nom.
Max.
A 1.40
1.50
1.60
0.055
0.059
0.063
b 0.36
0.42
0.48
0.014
0.016
0.018
b1 0.41
0.47
0.53
0.016
0.043
0.051
C 0.35
0.39
0.43
0.014
0.015 0.017
D 4.40
4.50
4.60
0.173
0.177
0.181
D1 1.40
1.60
1.75
0.055
0.062
0.069
e 2.90
3.00
3.10
0.114
0.118
0.122
e1 1.45
1.50
1.55
0.057
0.059
0.061
E 2.35
2.48
2.60
0.093
0.098
0.102
HE 3.94 - 4.25
0.155 - 0.167
L 0.80 - 1.20
0.031 -
0.047
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