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LM2585 bảng dữ liệu(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
tên linh kiện LM2585
Giải thích chi tiết về linh kiện  SIMPLE SWITCHER 3A Flyback Regulator
PDF  25 Pages
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LM2585 bảng dữ liệu(HTML) 2 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Input Voltage
−0.4V
≤ V
IN ≤ 45V
Switch Voltage
−0.4V
≤ V
SW ≤ 65V
Switch Current (Note 2)
Internally Limited
Compensation Pin Voltage
−0.4V
≤ V
COMP ≤ 2.4V
Feedback Pin Voltage
−0.4V
≤ V
FB ≤ 2VOUT
Storage Temperature Range
−65˚C to +150˚C
Lead Temperature
(Soldering, 10 sec.)
260˚C
Maximum Junction Temperature
(Note 3)
150˚C
Power Dissipation (Note 3)
Internally Limited
Minimum ESD Rating
(C = 100 pF, R = 1.5 k
Ω)2 kV
Operating Ratings
Supply Voltage
4V
≤ V
IN ≤ 40V
Output Switch Voltage
0V
≤ V
SW ≤ 60V
Output Switch Current
I
SW ≤ 3.0A
Junction Temperature Range
−40˚C
≤ T
J ≤ +125˚C
Electrical Characteristics
LM2585-3.3
Specifications with standard type face are for T
J = 25˚C, and those in bold type face apply over full Operating Temperature
Range. Unless otherwise specified, V
IN = 5V.
Symbol
Parameters
Conditions
Typical
Min
Max
Units
SYSTEM PARAMETERS Test Circuit of
Figure 2 (Note 4)
V
OUT
Output Voltage
V
IN = 4V to 12V
3.3
3.17/3.14
3.43/3.46
V
I
LOAD = 0.3A to 1.2A
∆V
OUT/
Line Regulation
V
IN = 4V to 12V
20
50/100
mV
∆V
IN
I
LOAD = 0.3A
∆V
OUT/
Load Regulation
V
IN = 12V
20
50/100
mV
∆I
LOAD
I
LOAD = 0.3A to 1.2A
η
Efficiency
V
IN = 5V, ILOAD = 0.3A
76
%
UNIQUE DEVICE PARAMETERS (Note 5)
V
REF
Output Reference
Measured at Feedback Pin
3.3
3.242/3.234
3.358/3.366
V
Voltage
V
COMP = 1.0V
∆V
REF
Reference Voltage
V
IN = 4V to 40V
2.0
mV
Line Regulation
G
M
Error Amp
I
COMP = −30 µA to +30 µA
1.193
0.678
2.259
mmho
Transconductance
V
COMP = 1.0V
A
VOL
Error Amp
V
COMP = 0.5V to 1.6V
260
151/75
V/V
Voltage Gain
R
COMP = 1.0 MΩ (Note 6)
LM2585-5.0
Symbol
Parameters
Conditions
Typical
Min
Max
Units
SYSTEM PARAMETERS Test Circuit of
Figure 2 (Note 4)
V
OUT
Output Voltage
V
IN = 4V to 12V
5.0
4.80/4.75
5.20/5.25
V
I
LOAD = 0.3A to 1.1A
∆V
OUT/
Line Regulation
V
IN = 4V to 12V
20
50/100
mV
∆V
IN
I
LOAD = 0.3A
∆V
OUT/
Load Regulation
V
IN = 12V
20
50/100
mV
∆I
LOAD
I
LOAD = 0.3A to 1.1A
η
Efficiency
V
IN = 12V, ILOAD = 0.6A
80
%
UNIQUE DEVICE PARAMETERS (Note 5)
V
REF
Output Reference
Measured at Feedback Pin
5.0
4.913/4.900
5.088/5.100
V
Voltage
V
COMP = 1.0V
∆V
REF
Reference Voltage
V
IN = 4V to 40V
3.3
mV
Line Regulation
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