APE1084S18-HF [A-POWER]
IC VREG 1.8 V FIXED POSITIVE LDO REGULATOR, 1.4 V DROPOUT, PSSO2, HALOGEN FREE AND ROHS COMPLIANT, TO-263, 3 PIN, Fixed Positive Single Output LDO Regulator;
| 型号： | APE1084S18-HF |
| 厂家： | 
ADVANCED POWER ELECTRONICS CORP. |
| 描述： | IC VREG 1.8 V FIXED POSITIVE LDO REGULATOR, 1.4 V DROPOUT, PSSO2, HALOGEN FREE AND ROHS COMPLIANT, TO-263, 3 PIN, Fixed Positive Single Output LDO Regulator |
| 文件： | 总9页 (文件大小：261K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
APE1084
5A Low Dropout Positive Adjustable or Fixed-Mode RegulatHoarlogen Free Product
1. Features
ꢀGeneral Description
• 1.4V maximum dropout at full load current
• Built-in thermal shutdown
APE1084 is a low dropout positive adjustable or
fixed-mode regulator with minimum of 5.0A output
current capability. The product is specifically
• Output current limiting
• Adjustable output voltage or fixed 1.5V, 1.8V, 2.5V, designed to provide well-regulated supply for low
3.3V, 5.0V
voltage IC applications such as high-speed bus
termination and low current 3.3V logic supply.
APE1084 is also well suited for other applications
such as VGA cards. APE1084 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
3.3V with 4.7 to 12V input supply.
• Fast transient response
• Good noise rejection
• Package : TO252, TO263, TO220
• RoHS Compliant & Halogen Free Product
ꢀOrdering Information
Halogen Free
APE 1084 X XX - HF
Low Dropout Regulator
Package
Vout
Blank : Adj
15 = 1.5V
18 = 1.8V
25 = 2.5V
33 = 3.3V
50 = 5.0V
H : TO252-3L
S : TO263-3L
P : TO220-3L
ꢀBlock Diagram
Vin
3
2
1
Vout
+
+
+
1.25V
－
CURRENT
LIMIT
+
Thermal
Shutdown
Adj
This datasheet contains new product information. Advanced Power Electronics 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
201003126
APE1084
Pb Free Plating Product
5A Low Dropout Positive Adjustable or Fixed-Mode Regulator
ꢀConnection Diagram
TO263
TO252
FRONT VIEW
FRONT VIEW
Vin
3
Vin
3
Vout
2
Vout
Adj (GND)
2
1
Adj (GND)
1
Tab is Vout
Tab is Vout
TO220
FRONT VIEW
3
2
1
Vin
Vout
Adj (GND)
Tab is Vout
ꢀPin Descriptions
Pin No.
Name I/O
Function
TO263/
252/220
PDIP-8
Adjustable (Ground only for fixed mode)
Adj
I
1
2
1
A resistor divider from this pin to the Vout pin and ground sets the
output voltage. (Ground only for Fixed-Mode)
(GND)
The output of the regulator. A minimum of 10uF (0.15 Ω ≤ ESR ≤
20Ω) capacitor 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
input voltage does not sag below the minimum dropout voltage
(1.3V) higher than Vout in order for the device to regulate properly.
2/3/5/6/
7/8
Vout
Vin
O
I
3
4
Advanced Power Electronics Corp.
www.a-power.com.tw
2
APE1084
Pb Free Plating Product
5A Low Dropout Positive Adjustable or Fixed-Mode Regulator
ꢀAbsolute Maximum Ratings
Symbol
Parameter
Rating
Unit
Vin
PD
DC Supply Voltage
Power Dissipation
-0.3 to 12
V
Internally Limited
o
o
TST
Storage Temperature
-65 to +150
0 to +150
C
TOP
Operating Junction Temperature Range
C
ꢀ Electrical Characteristics (Under Operating Conditions)
Sym.
Parameter
Conditions (Notes)
Min.
Typ.
Max.
Unit
VREF
Reference Voltage Io=10mA, Tj=25oC, (Vin-Vout)=1.5V
1.225
1.250
0.2
1.500
1.800
2.500
3.300
5.000
1.275
0.5
1.530
1.836
2.550
3.365
5.100
V
%
V
V
V
V
V
APE1084-XXX
APE1084-1.5
APE1084-1.8
APE1084-2.5
APE1084-3.3
APE1084-5.0
IO=10mA, VOUT+1.5V<VIN<12V, TJ =25oC
IOUT = 10mA, TJ = 25oC, 3V≦VIN≦12V
1.470
1.764
2.450
3.235
4.900
I
I
OUT = 10mA, TJ = 25oC, 3.3V≦VIN≦12V
OUT = 10mA, TJ = 25oC, 4V≦VIN≦12V
Line
Regulation
IOUT = 10mA, TJ = 25oC, 4.8V≦VIN≦12V
IOUT = 10mA, TJ = 25oC, 6.5V≦VIN≦12V
VIN=3.3V, 0mA<Io<5A, TJ =25oC
(Note 1,2)
APE1084-Adj
APE1084-1.5
APE1084-1.8
APE1084-2.5
1
%
VIN=3V, 0mA<Io<5A, TJ =25oC
(Note 1,2)
12
15
20
15
18
25
mV
mV
mV
Load
VIN=3.3V, 0mA<Io<5A
Regulation
TJ =25oC (Note 1,2)
VIN=4V, 0mA<Io<5A
TJ =25oC (Note 1,2)
APE1084-3.3
APE1084-5.0
Dropout Voltage
Current Limit
Minimum Load
Current
VIN = 5V, 0mA<Io<5A , TJ=25oC (Note 1,2)
VIN = 8V, 0mA<Io<5A, TJ=25oC (Note 1,2)
Io=5.0A (∆Vout = 1% Vout)
Vin-Vout=5V
26
40
1.3
33
50
1.4
mV
mV
V
∆Vo
5.1
A
5
10
mA
Temperature
Stability
Io=10mA
0.5
%
Thermal Resistance
Junction-to-Ambient
(No heat sink ;No
air flow)
TO-252
TO-263
TO-220
98
83
83
θJA
OC/W
OC/W
TO-252: Control Circuitry/Power Transistor
TO-263: Control Circuitry/Power Transistor
TO-220: Control Circuitry/Power Transistor
10
Thermal Resistance
Junction-to-Case
θJC
0.65/2.7
0.65/2.7
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 and the output current. Guaranteed maximum power dissipation will not be available over the
full input/output range.
Advanced Power Electronics Corp.
www.a-power.com.tw
3
APE1084
Pb Free Plating Product
5A Low Dropout Positive Adjustable or Fixed-Mode Regulator
ꢀTypical Circuit
(1) TO263/252/220
5.0V to 3.3V Fixed Mode Regulator
Adjustable Regulator
5V
5V
C1
C1
100uF
100uF
Vin
Vin
Vout
Adj
2.5V/5A
Vout
3.3V/5A
Ω
Ω
R1
R2
121
C2
C2
100uF
GND
Tab is Vout
100uF
121
Tab is Vout
R2
R1
VO = VREF (1+
)
Note:
Advanced Power Electronics Corp.
www.a-power.com.tw
4
APE1084
Pb Free Plating Product
5A Low Dropout Positive Adjustable or Fixed-Mode Regulator
ꢀFunctional Description
Introduction
The APE1084 is specifically designed to meet the fast
current transient needs as well as providing an
accurate initial voltage, reducing the overall system
cost with the need for fewer output capacitors.
The APE1084 adjustable Low Dropout (LDO) regulator
is a 3 terminal device that can easily be programmed
with the addition of two external resistors to any
voltages within the range of 1.25V to Vin-1.4V. The
APE1084 only needs 1.4V differential between Vin
and Vout to maintain output regulation. In addition, the
output voltage tolerances are also extremely tight and
they include the transient response as part of the
specification. For example, Intel VRE specification
calls for a total of +/- 100mV including initial tolerance,
load regulation and 0 to 5.0A load step.
Output Voltage Setting
The APE1084 can be programmed to any voltages in
the range of 1.25V to Vin-1.4V with the addition of R1
and R2 external resistors according to the following
formula:
Vout = Vref (1+ R2/R1) +Iadj *R2 , where Vref = 1.25 typically, Iadj =
55uA typically R1&R2 as shown at below
Vin
Vout
APE1084
Adj
Vref
R1
R2
Iadj=55uA
The APE1084 keeps a constant 1.25V between the
output pin and the adjust pin. By placing a resistor R1
across these two pins a constant current flows through
R1, adding to the Iadj current and into the R2 resistor
producing a voltage equal to the (1.25/R1)*R2+Iadj*R2
which will be added to the 1.25V to set the output
voltage. This is summarized in the above equation.
Since the minimum load current requirement of the
APE1084 is 10mA, R1 is typically selected to be 121Ω
resistor so that it automatically satisfies the minimum
current requirement. Notice that since Iadj is typically
in the range of 55uA it only adds a small error to the
output voltage and should only be considered when a
very precise output voltage setting is required. For
example, in a typical 3.3V application where R1=121Ω
and R2=200Ω the error due to Iadj is only 0.3% of the
nominal set point.
the overall load regulation and one must keep the path
from the regulator to the load as short as possible to
minimize this effect.
Stability
The APE1084 requires the use of an output capacitor
as part of the frequency compensation in order to
make the regulator stable. For most applications a
minimum of 10uF aluminum electrolytic capacitor
insures both stability and good transient response.
Thermal Design
The APE1084 incorporates an internal thermal
shutdown that protects the device when the junction
temperature exceeds the maximum allowable junction
temperature. Although this device can operate with
junction temperatures in the range of 150oC, it is
recommended that the selected heat sink be chosen
such that during maximum continuous load operation
the junction temperature is kept below the temperature.
Load Regulation
Since the APE1084 is only a 3 terminal device, it is not
possible to provide true remote sensing of the output
voltage at the load. The best load regulation is
achieved when the bottom side of R2 is connected to
the load and the top-side of R1 resistor is connected
directly to the case or the Vout pin of the regulator and
not to the load. It is important to note that for high
current applications, this can re-present a significant
percentage of
Layout Consideration
The output capacitors must be located as close to the
Vout terminal of the device as possible. It is
recommended to use a section of a layer of the PC
board as a plane to connect the Vout pin to the output
capacitors to prevent any high frequency oscillation
that may result due to excessive trace inductance.
Advanced Power Electronics Corp.
www.a-power.com.tw
5
APE1084
Pb Free Plating Product
5A Low Dropout Positive Adjustable or Fixed-Mode Regulator
ꢀPerformance Characteristics
2. 0
0.20
0
1. 8
1. 6
1. 4
I load=1.5A
-0.20
-0.40
-0.80
- 1
Tj = 25 oC
1. 2
1. 0
0. 8
0. 6
0. 4
0. 2
0
Tj = 125 oC
25
50
75
100
125
-25
0
1
2
3
4
5
0
Temperature (oC)
Output Current (A)
Dropout Voltage vs Output Current
Load Regulation vs Temperature
2
1.5
1
1
0.8
0. 5
0
0.6
0.4
0.2
0
-0.5
- 1
-1.5
- 2
-50 -25
0
25
50
75
100 125 150
6
8
10
12
2
4
Temperature (oC)
Input Voltage (V)
Percent Change in Output Voltage vs Temperature
Line Regulation
7.5
60
40
Cin=1uF
Cin=1uF
Cout=10uF Tantalum
6.5
Cout=10uF Tantalum
Preload=100mA
20
0
5.5
40
-20
-40
6
20
0
4
-20
2
-40
0
0
20 40 60 80 100 120 140 160 180 200
TIME (us)
Line Transient Response
20 30 40 50 60 70 80 90 100
TIME (us)
0
10
Load Transient Response
Advanced Power Electronics Corp.
www.a-power.com.tw
6
ADVANCED POWER ELECTRONICS CORP.
Package Outline : TO-252
Millimeters
D
SYMBOLS
MIN
NOM MAX
D1
A2
A3
B1
D
1.80
0.40
0.40
6.00
4.80
3.50
2.20
0.5
2.30
0.50
0.70
6.50
5.35
4.00
2.63
0.85
5.70
1.10
2.30
0.50
2.80
0.60
1.00
7.00
5.90
4.50
3.05
1.20
6.30
1.80
--
E2
D1
E3
F
E3
F1
E1
E2
e
E1
5.10
0.50
--
C
0.35
0.65
B1
F1
F
1.All Dimensions Are in Millimeters.
e
e
2.Dimension Does Not Include Mold Protrusions.
R : 0.127~0.381
A2
(0.1mm
C
A3
Part Marking Information & Packing : TO-252
Part Number
Vout---Blank:Adj
15:1.5V 33:3.3V
18:1.8V 50:5.0V
25:2.5V
1084-&&
LOGO
Date Code (YWWSSS)
YWWSSS
Y：Last Digit Of The Year
WW：Week
SSS：Sequence
7
ADVANCED POWER ELECTRONICS CORP.
Package Outline : TO-220
E
A
E1
Millimeters
SYMBOLS
φ
MIN
NOM
4.60
0.88
8.80
0.43
MAX
A
b
4.40
0.76
8.60
0.36
4.80
1.00
9.00
0.50
L5
L1
c1
D
c
E
9.80 10.10 10.40
14.70 15.00 15.30
D1
L4
L5
D1
c1
b1
L
6.20
6.40
5.10 REF.
1.35
6.60
D
L4
1.25
1.17
1.45
1.47
1.32
13.25 13.75 14.25
2.54 REF.
b1
e
L1
φ
E1
2.60
3.71
2.75
3.84
2.89
3.96
L
7.4 REF,
c
b
1.All Dimensions Are in Millimeters.
2.Dimension Does Not Include Mold Protrusions.
e
Part Marking Information & Packing : TO-220
Part Number
Vout---Blank:Adj
15:1.5V 33:3.3V
18:1.8V 50:5.0V
25:2.5V
1084-&&
LOGO
YWWSSS
Date Code (YWWSSS)
Y：Last Digit Of The Year
WW：Week
SSS：Sequence
8
ADVANCED POWER ELECTRONICS CORP.
Package Outline : TO-263
E
E3
SYMBOLS
Millimeters
E1
E2
MIN
4.25
0.00
2.20
0.70
1.07
0.30
1.15
8.30
NOM
4.75
MAX
D2
A
A1
A2
b
5.20
0.30
2.70
1.10
1.47
0.60
1.45
9.40
0.15
2.45
D1
0.90
D
b1
c
1.27
0.45
c1
D
1.30
8.90
b1
b
D1
D2
E
5.10(ref)
1.27(ref)
10.10
7.40(ref)
6.40(ref)
8.00(ref)
2.54
L2
L3
9.70
2.04
10.50
3.04
E1
E2
E3
e
e
L4
A2
L1
L2
L3
L4
θ
2.54(ref)
1.50
A
4.50
0°
4.90
5.30
5°
1.50
-----
c
θ
c1
1.All Dimensions Are in Millimeters.
A1
2.Dimension Does Not Include Mold Protrusions.
L1
Part Marking Information & Packing : TO-263
Part Number
1084-&&
Vout---Blank:Adj
15:1.5V 33:3.3V
18:1.8V 50:5.0V
25:2.5V
LOGO
YWWSSS
Date Code (YWWSSS)
Y：Last Digit Of The Year
WW：Week
SSS：Sequence
9
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