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LM2587S-5.0 Datenblatt(PDF) 8 Page - Texas Instruments

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Teilenummer LM2587S-5.0
Bauteilbeschribung  LM2587 SIMPLE SWITCHER 5A Flyback Regulator
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Hersteller  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
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LM2587
SNVS115D – APRIL 2000 – REVISED APRIL 2013
www.ti.com
All Output Voltage Versions Electrical Characteristics
(1) (continued)
Specifications with standard type face are for TJ = 25°C, and those in bold type face apply over full Operating Temperature
Range. Unless otherwise specified, VIN = 5V.
Symbol
Parameters
Conditions
Typical
Min
Max
Units
ISS
Soft Start Current
VFEEDBACK = 0.92V
11.0
8.0/7.0
17.0/19.0
μA
VCOMP = 1.0V
D
Maximum Duty Cycle
RLOAD = 100Ω
98
93/90
%
See(3)
IL
Switch Leakage
Switch Off
15
300/600
μA
Current
VSWITCH = 60V
VSUS
Switch Sustaining
dV/dT = 1.5V/ns
65
V
Voltage
VSAT
Switch Saturation
ISWITCH = 5.0A
0.7
1.1/1.4
V
Voltage
ICL
NPN Switch
6.5
5.0
9.5
A
Current Limit
COMMON DEVICE PARAMETERS(5)
θJA
Thermal Resistance
NDH Package, Junction to Ambient(6)
65
θJA
NDH Package, Junction to Ambient(7)
45
θJC
NDH Package, Junction to Case
2
θJA
°C/W
KTT Package, Junction to Ambient(8)
56
θJA
KTT Package, Junction to Ambient(9)
35
θJA
KTT Package, Junction to Ambient(10)
26
θJC
KTT Package, Junction to Case
2
(5)
External components such as the diode, inductor, input and output capacitors can affect switching regulator performance. When the
LM2587 is used as shown in Figure 7 and Figure 8, system performance will be as specified by the system parameters.
(6)
Junction to ambient thermal resistance (no external heat sink) for the 5 lead TO-220 package mounted vertically, with ½ inch leads in a
socket, or on a PC board with minimum copper area.
(7)
Junction to ambient thermal resistance (no external heat sink) for the 5 lead TO-220 package mounted vertically, with ½ inch leads
soldered to a PC board containing approximately 4 square inches of (1oz.) copper area surrounding the leads.
(8)
Junction to ambient thermal resistance for the 5 lead TO-263 mounted horizontally against a PC board area of 0.136 square inches (the
same size as the TO-263 package) of 1 oz. (0.0014 in. thick) copper.
(9)
Junction to ambient thermal resistance for the 5 lead TO-263 mounted horizontally against a PC board area of 0.4896 square inches
(3.6 times the area of the TO-263 package) of 1 oz. (0.0014 in. thick) copper.
(10) Junction to ambient thermal resistance for the 5 lead TO-263 mounted horizontally against a PC board copper area of 1.0064 square
inches (7.4 times the area of the TO-263 package) of 1 oz. (0.0014 in. thick) copper. Additional copper area will reduce thermal
resistance further. See the thermal model in Switchers Made Simple® software.
8
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