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LM2587 bảng dữ liệu(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
tên linh kiện LM2587
Giải thích chi tiết về linh kiện  SIMPLE SWITCHER 5A Flyback Regulator
PDF  26 Pages
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nhà sản xuất  NSC [National Semiconductor (TI)]
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LM2587 bảng dữ liệu(HTML) 3 Page - National Semiconductor (TI)

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LM2587-5.0
Electrical Characteristics (Continued)
Symbol
Parameters
Conditions
Typical
Min
Max
Units
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
G
M
Error Amp
I
COMP = −30 µA to +30 µA
0.750
0.447
1.491
mmho
Transconductance
V
COMP = 1.0V
A
VOL
Error Amp
V
COMP = 0.5V to 1.6V
165
99/49
V/V
Voltage Gain
R
COMP = 1.0 MΩ (Note 6)
LM2587-12
Electrical Characteristics
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 3 (Note 4)
V
OUT
Output Voltage
V
IN = 4V to 10V
12.0
11.52/11.40
12.48/12.60
V
I
LOAD = 300 mA to 1.2A
∆V
OUT/
Line Regulation
V
IN = 4V to 10V
20
100/200
mV
∆V
IN
I
LOAD = 300 mA
∆V
OUT/
Load Regulation
V
IN = 10V
20
100/200
mV
∆I
LOAD
I
LOAD = 300 mA to 1.2A
η
Efficiency
V
IN = 10V, ILOAD = 1A
90
%
UNIQUE DEVICE PARAMETERS (Note 5)
V
REF
Output Reference
Measured at Feedback Pin
12.0
11.79/11.76
12.21/12.24
V
Voltage
V
COMP = 1.0V
∆V
REF
Reference Voltage
V
IN = 4V to 40V
7.8
mV
Line Regulation
G
M
Error Amp
I
COMP = −30 µA to +30 µA
0.328
0.186
0.621
mmho
Transconductance
V
COMP = 1.0V
A
VOL
Error Amp
V
COMP = 0.5V to 1.6V
70
41/21
V/V
Voltage Gain
R
COMP = 1.0 MΩ (Note 6)
LM2587-ADJ
Electrical Characteristics
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 3 (Note 4)
V
OUT
Output Voltage
V
IN = 4V to 10V
12.0
11.52/11.40
12.48/12.60
V
I
LOAD = 300 mA to 1.2A
∆V
OUT/
Line Regulation
V
IN = 4V to 10V
20
100/200
mV
∆V
IN
I
LOAD = 300 mA
∆V
OUT/
Load Regulation
V
IN = 10V
20
100/200
mV
∆I
LOAD
I
LOAD = 300 mA to 1.2A
η
Efficiency
V
IN = 10V, ILOAD = 1A
90
%
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