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LM5000 bảng dữ liệu(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
tên linh kiện LM5000
Giải thích chi tiết về linh kiện  High Voltage Switch Mode Regulator
PDF  18 Pages
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
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LM5000 bảng dữ liệu(HTML) 4 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 4)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN
-0.3V to 40V
SW Voltage
-0.3V to 80V
FB Voltage
-0.3V to 5V
COMP Voltage
-0.3V to 3V
All Other Pins
-0.3V to 7V
Maximum Junction Temperature
150˚C
Power Dissipation(Note 5)
Internally Limited
Lead Temperature
216˚C
Infrared (15 sec.)
235˚C
ESD Susceptibility (Note 6)
Human Body Model
2kV
Machine Model
200V
Storage Temperature
−65˚C to +150˚C
Operating Conditions
Operating Junction
Temperature Range
(Note 10)
−40˚C to +125˚C
Supply Voltage (Note 10)
3.1V to 40V
Electrical Characteristics
Specifications in standard type face are for T
J = 25˚C and those with boldface type apply over the full Operating Tempera-
ture Range (T
J = −40˚C to +125˚C) Unless otherwise specified. VIN = 12V and IL = 0A, unless otherwise specified.
Symbol
Parameter
Conditions
Min
(Note 7)
Typ
(Note 8)
Max
(Note 7)
Units
I
Q
Quiescent Current
FB = 2V (Not Switching)
FS=0V
2.0
2.5
mA
FB = 2V (Not Switching)
FS = Open
2.1
2.5
mA
V
SHDN =0V
18
30
µA
V
FB
Feedback Voltage
1.2330
1.259
1.2840
V
I
CL
Switch Current Limit
1.35
2.0
2.7
A
%V
FB/
∆V
IN
Feedback Voltage Line
Regulation
3.1V
≤ V
IN
≤ 40V
0.001
0.04
%/V
I
B
FB Pin Bias Current (Note 9)
55
200
nA
BV
Output Switch Breakdown
Voltage
T
J = 25˚C, ISW = 0.1µA
80
V
T
J = -40˚C to + 125˚C, ISW =
0.5µA
76
V
IN
Input Voltage Range
3.1
40
V
g
m
Error Amp Transconductance
∆I = 5µA
150
410
750
µmho
A
V
Error Amp Voltage Gain
280
V/V
D
MAX
Maximum Duty Cycle
LM5000-3EP
FS=0V
85
90
%
Maximum Duty Cycle
LM5000-6EP
FS=0V
85
90
%
T
MIN
Minimum On Time
165
ns
f
S
Switching Frequency
LM5000-3EP
FS=0V
240
300
360
kHz
FS = Open
550
700
840
Switching Frequency
LM5000-6EP
FS=0V
485
600
715
FS = Open
1.055
1.3
1.545
MHz
I
SHDN
Shutdown Pin Current
V
SHDN =0V
−1
-2
µA
I
L
Switch Leakage Current
V
SW = 80V
0.008
5
µA
R
DSON
Switch R
DSON
I
SW = 1A
160
445
m
Ω
Th
SHDN
SHDN Threshold
Output High
0.9
0.6
V
Output Low
0.6
0.3
V
UVLO
On Threshold
2.74
2.92
3.10
V
Off Threshold
2.60
2. 77
2.96
V
OVP
V
COMP Trip
0.67
V
I
SS
Softstart Current
8
11
14
µA
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