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LM2588 Datasheet(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM2588
Description  SIMPLE SWITCHER 5A Flyback Regulator with
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2588 Datasheet(HTML) 5 Page - National Semiconductor (TI)

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LM2588-ADJ
Electrical Characteristics (Continued)
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
UNIQUE DEVICE PARAMETERS (Note 5)
V
REF
Output Reference
Measured at Feedback Pin
1.230
1.208/1.205
1.252/1.255
V
Voltage
V
COMP = 1.0V
∆V
REF
Reference Voltage
V
IN = 4V to 40V
1.5
mV
Line Regulation
G
M
Error Amp
I
COMP = −30 µA to +30 µA
3.200
1.800
6.000
mmho
Transconductance
V
COMP = 1.0V
A
VOL
Error Amp
V
COMP = 0.5V to 1.6V
670
400/200
V/V
Voltage Gain
R
COMP = 1.0 MΩ (Note 6)
I
B
Error Amp
V
COMP = 1.0V
125
425/600
nA
Input Bias Current
All Output Voltage Versions
Electrical Characteristics (Note 5)
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
I
S
Input Supply Current
Switch Off
11
15.5/16.5
mA
(Note 8)
I
SWITCH = 3.0A
85
140/165
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
www.national.com
5


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