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National Semiconductor Electronic Components Datasheet

L1087MPX-2.85 Datasheet

800mA fixed and adjustable low dropout linear regulator

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L1087MPX-2.85 pdf
L1087
800mA
L1087
800mA
2.85V 3.3V 5.0V
3
: 800mA
:2
CPU
2001 9
SOT-223
TO-252
Top View
Top View
Package
3-lead SOT-223
3-lead TO-252
Maximum
Temperature
125
L1087MPX-ADJ
L1087MPX-2.85
L1087MPX-3.3
L1087MPX-5.0
L1087DTX-ADJ
L1087DTX-2.85
L1087DTX-3.3
L1087DTX-5.0
Packaging Marking
N08A
N09A
N10A
N11A
L1087DTX-ADJ
L1087DTX-2.85
L1087DTX-3.3
L1087DTX-5.0
Transport Media
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
NSC
Drawing
MA04A
TD03B
© National Semiconductor Corporation
1
Printed in Japan NSJ 9/2001



National Semiconductor Electronic Components Datasheet

L1087MPX-2.85 Datasheet

800mA fixed and adjustable low dropout linear regulator

No Preview Available !

L1087MPX-2.85 pdf
(Note 1)
VIN (
VOUT (
IOUT (
)
)
)
10V
2.85V/3.3V/5.0V/
0.8A
()
125
40 150
260
VI 4.75V 5.75V IO 10mA 0.8A
Symbol
Parameter
Conditions
VREF
VD
IS
IADJ
Reference Voltage
Dropout Voltage
Current Limit
Line Regulation
Load Regulation
Adjust Current
Minimum Load
L1087-ADJ
IO 10mA, TA 25
VREF 1 , IO Full Load
VI 5V
L1087-ADJ
IO 10mA, TA 25
L1087-2.85
IO 0mA, TA 25
L1087-3.3
IO 0mA, TA 25
L1087-5.0
IO 0mA, TA 25
L1087-ADJ
VI 5V, VO 3.45V
L1087-2.85
VI 4.25V
L1087-3.3
VI 4.75V
L1087-5.0
VI 6.5V
L1087-ADJ
L1087-ADJ
Thermal Resistance
Junction to Case
Thermal Resistance
Junction to Ambient
(No heatsink; No Air
Flow (Note 2))
3 Lead SOT-223
3 Lead TO-252
3-Lead SOT-223
3-Lead TO-252
Note 1:
Note 2:
IC
0.038in2
Min Typ Max Units
1.23 1.25 1.27
V
1.20 1.5
1.2 2.0
0.5 2
V
A
1 6 mV
1 6 mV
1 10 mV
0.5 2.5
1 10 mV
1 10 mV
1 15 mV
55 100 A
10 mA
15 /W
10
136 /W
92
http://www.national.com
2



National Semiconductor Electronic Components Datasheet

L1087MPX-2.85 Datasheet

800mA fixed and adjustable low dropout linear regulator

No Preview Available !

L1087MPX-2.85 pdf
1.0
1.1
1.2 ADJ
/
10 F
(CADJ)
ADJ
Figure 2
Rt1 Rt2
VLOAD
RLOAD
VOUT
CADJ
1/(2 *fRIPPLE*CADJ) R1
R1 ADJ
100 200
fRIPPLE=120Hz
CADJ
R1
11 F
1.3
R1 124
ESR(
)
L1087
10 F
5
CADJ
(22 F
2.0
L1087
VREF
R1
IADJ
I1
ESR 0.5
)
ADJ
Figure 1
I1
(60 A)
I1 R2
1.25V
ADJ
FIGURE 2. Typical Application using Fixed Output
Regulator
(Figure 3)
R1
0.05
R1( 125 )
0.05 (1 R2/R1)
5V
0.05 IL
4
R2
R1 R2
FIGURE 1. Basic Adjustable Regulator
3.0
L1087
ADJ
FIGURE 3. Best Load Regulation using Adjustable
Output Regulator
4.0
L1087
ADJ
ADJ
ADJ
25V
3 http://www.national.com




Part Number L1087MPX-2.85
Description 800mA fixed and adjustable low dropout linear regulator
Maker National Semiconductor
Total Page 10 Pages
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L1087MPX-2.85 pdf
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1 L1087MPX-2.85 800mA fixed and adjustable low dropout linear regulator National Semiconductor
National Semiconductor
L1087MPX-2.85 pdf




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