AP78LXX
0.15A Low Dropout Positive Regulator
(Preliminary)
This datasheet contains new product information. Analog Technology 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. 00. May.07, 2003
1/4
Features
Output voltage tolerances of + 3% over temperature
range.
Fast transient response
Output current of 150mA.
Built-in thermal shutdown
Packages: TO-92.
Good noise rejection
3-Terminal Fixed output voltage: 1.5V, 1.8V, 2.5V,
3.3V, 5.0V
Applications
PC peripheral
Communication
General Description
AP78LXX is a low dropout positive fixed-mode
regulator with minimum of 0.15A 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. AP78LXX is also
well suited for other applications such as VGA
cards.
Ordering Information
AP 78L
X
XX
X
Package
Vout
Z :TO-92L
15 : 1.5V
18 : 1.8V
25 : 2.5V
33 : 3.3V
05 : 5.0V
Packing
Blank : Tube or bulk
A : Taping
Typical Circuit
C2
10uF
8V
5.0V/
150mA
Vin
Vout
GND
C1
10uF
8V/5V output regulator
AP78L05
Connection Diagram
Vin
Vout GND
Buttom View
Pin Descriptions
NAME
I/O
PIN #
FUNCTION
GND
I
2
Ground.
Vout
O
1
The output of the regulator. A minimum of 10uF capacitor must be
connected from this pin to ground to insure stability.
Vin
I
3
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.
AP78LXX
0.15A Low Dropout Positive Regulator
(Preliminary)
Rev. 00 MAy.07, 2003
2/4
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
Electrical Characteristics
(Under Operating Conditions)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
AP78L15
I
OUT
= 10mA, T
J
= 25
o
C,
3VV
IN
12V
1.455
1.500
1.545
V
AP78L18
I
OUT
= 10mA, T
J
= 25
o
C,
3.3VV
IN
12V
1.746
1.800
1.854
V
AP78L25
I
OUT
= 10mA, T
J
= 25
o
C,
4VV
IN
12V
2.425
2.500
2.575
V
AP78L33
I
OUT
= 10mA, T
J
= 25
o
C,
4.8VV
IN
12V
3.200
3.300
3.4
V
Output Voltage
AP78L05
I
OUT
= 10mA, T
J
= 25
o
C,
6.5VV
IN
12V
4.850
5.000
5.150
V
Line Regulation
AP78LXX
I
O
=10mA,V
OUT
+1.5V<V
IN
<18V,
T
J
=25
o
C
0.2
%
Load Regulation
AP78LXX
V
IN
=V
OUT
+2V,0mA<Io<0.15A,
T
J
=25
o
C
1
%
Dropout Voltage
(V
IN
-V
OUT
)
AP78LXX
I
OUT
= 0.15A ,
V
OUT
=1%V
OUT
1.3
V
Minimum Load Current
AP78LXX
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
=0.15A
Ripple Rejection
AP78LXX
V
IN
=V
OUT
+3V
60
70
dB
Temperature Stability
I
O
=10mA
0.5
%
JA
TO-92 Thermal Resistance Junction-to-Ambient(No
heat sink ;No air flow)
230
O
C/W
JC
TO-92 : Control Circuitry/Power Transistor
Thermal ResistanceJunction-to-Case
60
O
C/W
Note1: 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.
AP78LXX
0.15A Low Dropout Positive Regulator
(Preliminary)
Rev. 00 MAy.07, 2003
3/4
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
Output Voltage Deviation (mV)
Input Voltage (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 Current (A)
Output Voltage Deviation (mV)
0
10
20
30
40
50
60
70
80
90 100
-1
0
0.1
0.2
-10
-5
0
5
10
15
C in = 1uF
C out = 10 uF Tantalum
Preload = 100mA
Output Current (mA)
Dropout Voltage vs Output Current
Dropout Voltage (V)
0
0. 5
0. 6
0. 7
0. 8
0.9
1.0
1.1
1.2
1.3
1.4
0
30
60
90
120
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=150mA
150
AP78LXX
0.15A Low Dropout Positive Regulator
(Preliminary)
Rev. 00 MAy.07, 2003
4/4
Marking Information
AC
78L XX
YY WW ~
Logo
( Top view )
15 =1.5V
18 =1.8V
25 =2.5V
33 =3.3V
05 =5.0V:
YY : Year
WW: Nth week
Date code
Internal code
V
OUT
grade
Package Dimension
TO92-3L Package Outline Dimension
D
b
b
1
b
E
L
e
A
1
A
DIMENSIONS IN MILLMETER
DIMENSIONS IN INCHES
SYMBLOS
MIN
NOM
MAX
MIN
NOM
MAX
A
3.302
3.556
3.810
0.130
0.140
0.150
A1
1.016
----------
----------
0.040
----------
----------
b
0.330
0.381
0.432
0.013
0.015
0.017
b1
0.406
0.457
0.506
0.016
0.018
0.020
D
4.445
4.572
4.699
0.175
0.180
0.185
E
4.445
4.572
4.699
0.175
0.180
0.185
L
13.00
----------
15.50
0.512
----------
0.610
e
1.150
----------
1.390
0.045
----------
0.055
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