APL1084
5A Low Dropout Fast Response Positive Adjustable Regulator and Fixed 3.3V
Features
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Fast Transient Response
Guaranteed Dropout Voltage at Multiple Currents
Load Regulation :0.05% Typ.
Line Regulation : 0.03% Typ.
Low Dropout Voltage: 1.3V Typ. at I
OUT
=5A
Trimmed Current Limit : 5A Typ. at T
J
=125 °C
On-Chip Thermal Limiting : 150 °C Typ.
Standard 3-pin TO-220, TO-252, and TO-263
Power Packages
Lead Free and Green Devices Available
(RoHS Compliant)
General Description
The APL1084 is a low dropout three-terminal adjustable
regulator with 5A output current capability. In order to
obtain lower dropout voltage and speed up transient
response, which is critical for low voltage applications,
the APL1084 has been optimized. The output available
voltage range of adjustable version is from 1.25 to 5.75V
with an input supply below 7V, and the fixed 3.3V output
voltage device is also available. Current limit is trimmed
to ensure specified output current and controlled short-
circuit current. On-chip thermal limiting provides protec-
tion against any combination of overload that would cre-
ate excessive junction temperatures. The APL1084 is
available in both the through-hole and surface mount
versions of the industry standard 3-pin TO-220,TO-252,
and TO-263 power packages.
Pin Configuration
3
V
IN
V
OUT
ADJ
TAB is V
OUT
2
1
Front View APL1084
TO-252 Package
Applications
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Pentium
TM
Processor Supplies
PowerPC
TM
Supplies
Low Voltage Logic Supplies
Battery-Powered Circuitry
Post Regulator for Switching Power Supply
3
TAB is V
OUT
V
IN
V
OUT
ADJ
2
1
Front View APL1084
TO-263 Package
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3
V
IN
V
OUT
ADJ
TAB is V
OUT
2
1
Front View APL1084
TO-220 Package
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Copyright
©
ANPEC Electronics Corp.
Rev. B.12 - Oct., 2008
1
www.anpec.com.tw
APL1084
Ordering and Marking Information
APL1084 -
Assembly Material
Handling Code
Temperature Range
Package Code
Voltage Code
Package Code
F : TO-220
G : TO-263
U : TO-252
Operating Ambient Temperature Range
C : 0 to 70
o
C
Handling Code
TR : Tape & Reel
TU : Tube
Voltage Code :
33 : 3.3V
Blank : Adjustable Version
Assembly Material
L : Lead Free Device G : Halogen And Lead Free Device
XXXXX - Date Code
APL1084 :
APL1084
XXXXX
33
APL1084
XXXXX
APL1084- 33 :
XXXXX - Date Code
Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which
are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020C for
MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen
free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by
weight).
Absolute Maximum Ratings
Symbol
V
I
T
J
T
STG
T
SDR
Storage Temperature Range
(Note 1)
Rating
7
Control Section
Power Transistor
0 to 125
0 to 150
-65 to +150
260
Unit
V
°C
°C
°C
Parameter
Input Voltage
Operating Junction Temperature Range
Maximum Lead Soldering Temperature, 10 Seconds
Note 1 : Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Electrical Characteristics
Symbol
V
REF
V
OUT
Line Regulation
REG
LINE
Load Regulation
REG
LOAD
Dropout Voltage
V
D
APL1084
APL1084-3.3
APL1084
APL1084-3.3
Parameter
Reference Voltage
Output Voltage
Test Conditions
Min.
1.225
(-2%)
3.235
(-2%)
-
APL1084
Typ.
1.250
3.300
Max.
1.275
(+2%)
3.365
(+2%)
0.2
Unit
V
V
1.5V≤(V
IN
-V
OUT
)
≤5.75V,
APL1084 10mA≤ I
OUT
≤5A,
T
J
=0~125°C
10mA≤ I
OUT
≤
5A, 4.75V≤V
IN
≤7V,
APL1084-3.3 T
J
=0~125°C
T
J
=0~125°C,
(Note 2)
2.75V≤V
IN
≤7V,
I
OUT
=10mA,
4.75V≤V
IN
≤7V,
I
OUT
=0mA,
T
J
=25°C,
(Notes 2)
(V
IN
-V
OUT
)=3V, 10mA≤ I
OUT
≤
5A
V
I N
=5V, 0mA≤ I
OUT
≤
5A
∆V
REF
=1%, I
OUT
=3A,T
J
=0~125°C
∆V
REF
=1%, I
OUT
=5A,T
J
=0~125°C
0.03
%
-
0.05
0.05
1.2
1.3
0.3
0.5
1.4
%
-
V
1.5
Copyright
©
ANPEC Electronics Corp.
Rev. B.12 - Oct., 2008
2
www.anpec.com.tw
APL1084
Electrical Characteristics (Cont.)
Symbol
Parameter
Test Conditions
(V
IN
-V
OUT
)=1.7V, T
J
=25°C
T
J
=125°C
(V
IN
-V
OUT
)=3V, T
J
=25°C
T
J
=125°C
(V
IN
-V
OUT
)=3V, I
OUT
=10mA, T
J
=0∼125°C
1.5V≤(V
IN
-V
OUT
)≤5.75V,
10mA≤ I
OUT
≤5A
1.5V≤(V
IN
-V
OUT
)≤5.75V,
T
J
=0∼125°C
V
I N
=5V
Min.
6.0
5.0
6.5
5.5
-
-
-
-
APL1084
Typ.
7.6
6.0
8.2
6.5
60
0.2
2
8
-
A
Max.
Unit
I
LIMIT
Current Limit
I
ADJ
∆I
ADJ
I
LMIN
I
Q
Adjust Pin Current
APL1084
Adjust Pin Current Change
APL1084
Minimum Load Current
APL1084
Quiescent Current
APL1084-3.3
Ripple Rejection
APL1084
120
5
10
13
µA
µA
mA
mA
PSRR
F=120Hz, C
out
=22µF, Tant.,
(V
IN
-V
OUT
)=3V, I
OUT
=5A
F=120Hz, C
out
=22µF, Tant.,
APL1084-3.3
(V
IN
=6.3V, I
OUT
=5A
T
J
=125°C,
1000Hrs.
T
J
=25°C,
10Hz≤F≤10kHz
60
-
-
dB
L
S
V
N
θ
th,J-TAB
Long -Term Stability
RMS Output Noise (% of V
OUT
)
-
-
0.03
0.003
1.0
-
%
%
Thermal Resistance
(Note 3)
-
6.0
-
°C/
W
Junction-to-Case, at TAB
TO-263
50
Thermal Resistance
-
-
°C/
W
θ
th,J-AMB
Junction-to-Ambient
62.5
TO-252
Note 2: See thermal regulation specifications for changes in output voltage due to heating effects. Load and line regulations are
measured at a constant junction temperature by low duty cycle pulse testing.
Note 3 :The value could be varied when heat sink size is different. Use larger heat sink or larger PCB size, which improves
θ
th,TAB-A
, to improve overall thermal resistance (θ
th,J-A
).
Copyright
©
ANPEC Electronics Corp.
Rev. B.12 - Oct., 2008
3
www.anpec.com.tw
APL1084
Typical Operating Characteristics
Dropout Voltage vs. Output Current
1.5
1.4
1.3
T
J
=50
°
C
Short- Circuit Current vs. Temperature
16
15
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0
1
2
3
Output Current (A)
4
5
T
J
=125
°
C
T
J
=25
°
C
T
J
=0
°
C
Shout- Circuit Current (A)
14
13
12
11
10
9
8
7
6
-50
Dropout Voltage (V)
V
IN
-V
OUT (SHORT CIRCUIT)
=5V
V
IN
-V
OUT(SHORT CIRCUIT)
=3.3V
0
50
100
150
Temperature (°C)
Load Regulation vs. Temperature
0.10
0.05
∆
I =5A
Reference Voltage vs. Temperature
1.275
1.270
1.265
Output Voltage Deviation (%)
Reference Voltage (V)
0
50
Temperature (°C)
100
150
0.0
-0.05
-0.10
-0.15
-0.20
-50
1.260
1.255
1.250
1.245
1.240
1.235
1.230
1.225
-50
0
50
100
Temperature (°C)
150
Minimum Load Current vs. Temperature
1.4
Adjust Pin Current vs. Temperature
100
90
Minimum Load Current (mA)
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-50
-25
0
25
50
75
100
125 150
Adjust Pin Current (µA)
80
70
60
50
40
30
20
10
0
-50
0
50
Temperature (°C)
100
150
Temperature (°C)
Copyright
©
ANPEC Electronics Corp.
Rev. B.12 - Oct., 2008
4
www.anpec.com.tw
APL1084
Typical Operating Characteristics (Cont.)
Ripple Rejection vs. Frequency
90
80
Ripple Rejection (dB)
70
60
50
40
30
20
10
0
10
100
1k
10k
100k
V
IN
-V
OUT
= 3V
V
RIPPLE(p-p)
= 1V
I
OUT
= 5A
Frequency (Hz)
Copyright
©
ANPEC Electronics Corp.
Rev. B.12 - Oct., 2008
5
www.anpec.com.tw
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