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LM2587 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM2587
Description  SIMPLE SWITCHER 5A Flyback Regulator
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2587 Datasheet(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
%
www.national.com
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