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PDF APL1581 Data sheet ( Hoja de datos )
| Número de pieza | APL1581 | |
| Descripción | DUAL INPUT LOW DROPOUT REGULATOR | |
| Fabricantes | ANPEC | |
| Logotipo |  |
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APL1581
DUAL INPUT LOW DROPOUT REGULATOR
Features
General Description
• Adjustable or Fixed Output
• 520mV typ. Dropout at 5A in Dual Power
Voltage Mode
• Remote Sense Pin Available
• 2% Accuracy Over Temperature Range
• Build-in Over Temperature Protection
• Build-in Current Limit
• 5 Pin TO-220 and TO-263, TO-252, SOP-8-P
Packages
• Lead Free and Green Devices Available
(RoHS Compliant)
Applications
• Microprocessor Supplies
• Chip Set Supplies
• VGA Card Power
• LCD Monitor Power
The APL1581 series of high performance positive volt-
age regulators are designed for use in applications re-
quiring very low dropout voltage at 5Amp.
The APL1581 can provide a output voltage at the range of
1.25V to 2.55V where both 5V and 3.3V voltage supplies
are available.
The superior dropout characteristics result in reducing
heat dissipation compared to regular LDOs. The APL1581
also provides excellent regulation over line, load, and tem-
perature variations.
Current limit is trimmed to ensure specified output cur-
rent and controlled short-circuit current. On-chip thermal
limiting provides protection against any combina-
tion of overload that would create excessive junction
temperature.
The APL1581 is available in both the through-hole and
surface mount versions of the industry standard 5-Pin
TO-220 and TO-263, TO-252, SOP-8P power packages.
Ordering and Marking Information
APL1581
Assembly Material
Handling Code
Temperature Range
Package Code
Voltage Code
Package Code
F : TO-220-5 G : TO-263-5 U :TO-252-5
KA : SOP-8P
Temperature Range
C : 0 to 70°C
Handling Code
TR : Tape & Reel
Voltage Code :
15 : 1.5V
18 : 1.8V
25 : 2.5V
Blank : Adjustable Version
Assembly Material
L : Lead Free Device
G : Halogen and Lead Free Device
15
APL1581-15 F/G/U : APL1581 XXXXX - Date Code
XXXXX
APL1581 KA :
APL1581
XXXXX
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).
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.5 - Mar., 2008
1
www.anpec.com.tw
Free Datasheet http://www.datasheet4u.net/
1 page  
APL1581
Application Circuit
(1) Adjustable Output Voltage Device
VIN
+3.3V
VCNT L
+5V
CCNTL
10uF
VIN VOUT
APL1581
(Adj.)
VCNTL VSENSE
ADJ
V REF
CIN
100uF
R1
120
R2
120
VOUT
+2.5V/5A
COUT
470uF
GND
GND
* VOUT = VREF ( 1+ R2 / R1 ) + IADJ * R2
where VREF =1.25V (typical)
IADJ=50µA (typical)
* R1 is typically in range of 100Ω to 125Ω to satisfy the minimum load current requirement.
(2) Fixed Output Voltage Device
VIN
+3.3V
VCNT L
+5V
CCNTL
10uF
VIN VOUT
APL1581-25
VCNTL VSENSE
GND
CIN
100uF
VOUT
+2.5V/5A
COUT
470uF
GND
(3) With Enable Control Application
VIN
+3.3V
VCNT L
+5V
Enable
GND
Q1
10k
Q2
10k
CCNTL
10uF
VIN VOUT
APL1581
(Adj.)
VCNTL VSENSE
CIN
100uF
ADJ
V REF
R1
120
R2
120
Q1 : APM2301A
Q2 : APM2300A
Copyright © ANPEC Electronics Corp.
Rev. B.5 - Mar., 2008
5
GND
VOUT
+2.5V/5A
COUT
470uF
GND
www.anpec.com.tw
Free Datasheet http://www.datasheet4u.net/
5 Page 
APL1581
Package Information
TO-220-5
D
Q
E
be
e1
A
F
H1
L
c J1
Dim Millimeters
Min.
Max.
A 3.55
4.83
b 0.63
1.02
c 0.35
0.56
D 14.22
16.51
e 1.57
1.83
e1 6.68
6.94
E 9.65
10.67
F 1.14
1.40
H1 5.84
6.60
J1 2.03
3.05
L 13.72
14.22
R 3.53
4.09
Q 2.54
3.43
Min.
0.140
0.025
0.014
0.560
0.062
0.263
0.380
0.045
0.230
0.080
0.540
0.139
0.100
Inches
Max.
0.190
0.040
0.022
0.650
0.072
0.273
0.420
0.055
0.260
0.120
0.560
0.161
0.135
Copyright © ANPEC Electronics Corp.
Rev. B.5 - Mar., 2008
11
www.anpec.com.tw
Free Datasheet http://www.datasheet4u.net/
11 Page | ||
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