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LM2590HV-AQ Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM2590HV-AQ
Description  SIMPLE SWITCHER짰Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2590HV-AQ Datasheet(HTML) 3 Page - National Semiconductor (TI)

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All Output Voltage Versions
Electrical Characteristics
Specifications with standard type face are for T
J = 25˚C, and those with boldface type apply over full Operating Tempera-
ture Range. Unless otherwise specified, V
IN = 12V for the 3.3V, 5V, and Adjustable version. ILOAD = 500 mA
Symbol
Parameter
Conditions
LM2590HV-XXX-AQ
Units
Min
Typ
Max
(Note 5)
(Note 4)
(Note 5)
DEVICE PARAMETERS
f
O
Oscillator
Frequency
(Note 7)
127
110
150
173
173
kHz
kHz
V
SAT
Saturation Voltage
I
OUT = 1A (Note 8) (Note 9)
0.95
1.2
1.3
V
V
DC
Max Duty Cycle
(ON)
(Note 9)
100
%
Min Duty Cycle
(OFF)
(Note 10)
0
%
I
CLIM
Switch current
Limit
Peak Current, (Note 8) (Note 9)
1.3
1.2
1.9
2.8
3.0
A
A
I
L
Output Leakage
Current
Output = 0V (Note 8) (Note10) Note 11)
50
µA
Output = −1V (Note 8) (Note10) Note 11)
5
30
mA
I
Q
Operating
Quiescent Current
SD /SS Pin Open (Note 10)
510
mA
I
STBY
Standby Quiescent
Current
SD /SS pin = 0V
(Note 11)
90
200
250
µA
µA
θ
JC
Thermal
Resistance
TO220 or TO263 Package, Junction to Case
2
˚C/W
θ
JA
TO220 Package, Junction to Ambient (Note 12)
50
˚C/W
θ
JA
TO263 Package, Junction to Ambient (Note 13)
50
˚C/W
θ
JA
TO263 Package, Junction to Ambient (Note 14)
30
˚C/W
θ
JA
TO263 Package, Junction to Ambient (Note 15)
20
˚C/W
SHUTDOWN/SOFT-START CONTROL Test Circuit of Figure 1
V
SD
Shutdown
Threshold Voltage
Shutdown Mode, I
STBY < 250µA
0.6
1.3
2.0
V
V
OUT = 1% of Normal Output Voltage
1.8
V
V
SS
Soft-start Voltage
V
OUT = 20% of Nominal Output Voltage
2
V
V
OUT = 100% of Nominal Output Voltage
3
V
I
SD
Shutdown Current
V
SHUTDOWN = 0.5V
510
µA
I
SS
Soft-start Current
V
Soft-start = 2.5V
1.5
5
µA
www.national.com
3


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