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LM2586 bảng dữ liệu(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
tên linh kiện LM2586
Giải thích chi tiết về linh kiện  SIMPLE SWITCHER 3A Flyback Regulator with Shutdown
PDF  28 Pages
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
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LM2586 bảng dữ liệu(HTML) 5 Page - National Semiconductor (TI)

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LM2586-ADJ (Continued)
Symbol
Parameters
Conditions
Typical
Min
Max
Units
COMMON DEVICE PARAMETERS for all versions (Note 5)
I
S
Input Supply Current
Switch Off (Note 8)
11
15.5/16.5
mA
I
SWITCH = 1.8A
50
100/115
mA
I
S/D
Shutdown Input
V
SH = 3V
16
100/300
µA
Supply Current
V
UV
Input Supply
R
LOAD = 100Ω
3.30
3.05
3.75
V
Undervoltage Lockout
f
O
Oscillator Frequency
Measured at Switch Pin
R
LOAD = 100Ω,VCOMP = 1.0V
100
85/75
115/125
kHz
Freq. Adj. Pin Open (Pin 1)
R
SET = 22 kΩ
200
kHz
f
SC
Short-Circuit
Measured at Switch Pin
Frequency
R
LOAD = 100Ω
25
kHz
V
FEEDBACK = 1.15V
V
EAO
Error Amplifier
Upper Limit
2.8
2.6/2.4
V
Output Swing
(Note 7)
Lower Limit
0.25
0.40/0.55
V
(Note 8)
I
EAO
Error Amp
(Note 9)
Output Current
165
110/70
260/320
µA
(Source or Sink)
I
SS
Soft Start Current
V
FEEDBACK = 0.92V
11.0
8.0/7.0
17.0/19.0
µA
V
COMP = 1.0V
D
MAX
Maximum Duty Cycle
R
LOAD = 100Ω
98
93/90
%
(Note 7)
I
L
Switch Leakage
Switch Off
15
300/600
µA
Current
V
SWITCH = 60V
V
SUS
Switch Sustaining Voltage
dV/dT = 1.5V/ns
65
V
V
SAT
Switch Saturation Voltage
I
SWITCH = 3.0A
0.45
0.65/0.9
V
I
CL
NPN Switch Current Limit
4.0
3.0
7.0
A
V
STH
Synchronization
F
SYNC = 200 kHz
0.75
0.625/0.40
0.875/1.00
V
Threshold Voltage
V
COMP = 1V, VIN = 5V
I
SYNC
Synchronization
V
IN = 5V
100
200
µA
Pin Current
V
COMP = 1V, VSYNC = VSTH
V
SHTH
ON/OFF Pin (Pin 1)
V
COMP = 1V
1.6
1.0/0.8
2.2/2.4
V
Threshold Voltage
(Note 10)
I
SH
ON/OFF Pin (Pin 1)
V
COMP = 1V
40
15/10
65/75
µA
Current
V
SH = VSHTH
θ
JA
Thermal Resistance
T Package, Junction to
Ambient (Note 11)
65
˚C/W
θ
JA
T Package, Junction to
Ambient (Note 12)
45
θ
JC
T Package, Junction to Case
2
θ
JA
S Package, Junction to
Ambient (Note 13)
56
θ
JA
S Package, Junction to
Ambient (Note 14)
35
θ
JA
S Package, Junction to
Ambient (Note 15)
26
θ
JC
S Package, Junction to Case
2
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