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LM2585SX-ADJ Datasheet(PDF) 5 Page - Texas Instruments

Part # LM2585SX-ADJ
Description  LM2585 SIMPLE SWITCHER짰 3A Flyback Regulator
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
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LM2585SX-ADJ Datasheet(HTML) 5 Page - Texas Instruments

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LM2585
www.ti.com
SNVS120F – APRIL 2000 – REVISED APRIL 2013
Electrical Characteristics (All Versions)
Symbol
Parameters
Conditions
Typical
Min
Max
Units
COMMON DEVICE PARAMETERS for all versions (1)
IS
Input Supply Current
(Switch Off)(2)
11
15.5/16.5
mA
ISWITCH = 1.8A
50
100/115
mA
VUV
Input Supply
RLOAD = 100Ω
3.30
3.05
3.75
V
Undervoltage Lockout
fO
Oscillator Frequency
Measured at Switch Pin
RLOAD = 100Ω
100
85/75
115/125
kHz
VCOMP = 1.0V
fSC
Short-Circuit
Measured at Switch Pin
Frequency
RLOAD = 100Ω
25
kHz
VFEEDBACK = 1.15V
VEAO
Error Amplifier
Upper Limit(3)
2.8
2.6/2.4
V
Output Swing
Lower Limit(2)
0.25
0.40/0.55
V
IEAO
Error Amp
See (4)
165
110/70
260/320
μA
Output Current
(Source or Sink)
ISS
Soft Start Current
VFEEDBACK = 0.92V
11.0
8.0/7.0
17.0/19.0
μA
VCOMP = 1.0V
D
Maximum Duty
RLOAD = 100Ω
(3)
98
93/90
%
Cycle
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 = 3.0A
0.45
0.65/0.9
V
Voltage
ICL
NPN Switch
4.0
3.0
7.0
A
Current Limit
θJA
Thermal Resistance
TO-220 Package, Junction to
65
Ambient(5)
θJA
TO-220 Package, Junction to
45
Ambient(6)
θJC
TO-220 Package, Junction to
2
Case
θJA
DDPAK/TO-263 Package,
56
°C/W
Junction to Ambient(7)
θJA
DDPAK/TO-263 Package,
35
Junction to Ambient(8)
(1)
All room temperature limits are 100% production tested, and all limits at temperature extremes are specified via correlation using
standard Statistical Quality Control (SQC) methods.
(2)
To measure this parameter, the feedback voltage is set to a high value, depending on the output version of the device, to force the error
amplifier output low. Adj: VFB = 1.41V; 3.3V: VFB = 3.80V; 5.0V: VFB = 5.75V; 12V: VFB = 13.80V.
(3)
To measure this parameter, the feedback voltage is set to a low value, depending on the output version of the device, to force the error
amplifier output high. Adj: VFB = 1.05V; 3.3V: VFB = 2.81V; 5.0V: VFB = 4.25V; 12V: VFB = 10.20V.
(4)
To measure the worst-case error amplifier output current, the LM2585 is tested with the feedback voltage set to its low value (specified
in Tablenote 3) and at its high value (specified in Tablenote 2).
(5)
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.
(6)
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.
(7)
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 DDPAK/TO-263 package) of 1 oz. (0.0014 in. thick) copper.
(8)
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 DDPAK/TO-263 package) of 1 oz. (0.0014 in. thick) copper.
Copyright © 2000–2013, Texas Instruments Incorporated
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