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LM2592HV датащи(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
номер детали LM2592HV
подробное описание детали  SIMPLE SWITCHER Power Converter 150 kHz 2A Step-Down Voltage Regulator
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2592HV датащи(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
LM2592HV-XX
Units
(Limits)
Typ
Limit
(Note 3)
(Note 4)
DEVICE PARAMETERS
I
b
Feedback Bias Current
Adjustable Version Only, V
FB = 1.3V
10
nA
50/100
nA (max)
f
O
Oscillator Frequency
(Note 6)
150
kHz
127/110
kHz(min)
173/173
kHz(max)
V
SAT
Saturation Voltage
I
OUT = 2A (Note 7) (Note 8)
1.10
V
1.3/1.4
V(max)
DC
Max Duty Cycle (ON)
(Note 8)
100
%
Min Duty Cycle (OFF)
(Note 9)
0
I
CLIM
Switch current Limit
Peak Current, (Note 7) (Note 8)
3.0
A
2.4/2.3
A(min)
3.7/4.0
A(max)
I
L
Output Leakage Current
(Note 7) (Note 9) (Note 10)
Output = 0V
50
µA(max)
Output = −1V
5
mA
30
mA(max)
I
Q
Operating Quiescent
SD /SS Pin Open (Note 9)
5mA
Current
10
mA(max)
I
STBY
Standby Quiescent
SD /SS pin = 0V
(Note 10)
90
µA
Current
200/250
µA(max)
θ
JC
Thermal Resistance
TO220 or TO263 Package, Junction to Case
2
˚C/W
θ
JA
TO220 Package, Juncton to Ambient (Note 11)
50
˚C/W
θ
JA
TO263 Package, Juncton to Ambient (Note 12)
50
˚C/W
θ
JA
TO263 Package, Juncton to Ambient (Note 13)
30
˚C/W
θ
JA
TO263 Package, Juncton to Ambient (Note 14)
20
˚C/W
ON/OFF CONTROL Test Circuit
Figure 1
ON /OFF Pin Logic Input
1.3
V
V
IH
Threshold Voltage
Low (Regulator ON)
0.6
V(max)
V
IL
High (Regulator OFF)
2.0
V(min)
I
H
ON /OFF Pin Input Current
V
LOGIC = 2.5V (Regulator OFF)
5
µA
15
µA(max)
I
L
V
LOGIC = 0.5V (Regulator ON)
0.02
µA
5
µA(max)
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: The human body model is a 100 pF capacitor discharged through a 1.5k resistor into each pin.
Note 3: Typical numbers are at 25˚C and represent the most likely norm.
Note 4: All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100%
production tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods. All limits are used
to calculate Average Outgoing Quality Level (AOQL).
Note 5: External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the
LM2592HV is used as shown in the
Figure 1 test circuit, system performance will be as shown in system parameters section of Electrical Characteristics.
Note 6: The switching frequency is reduced when the second stage current limit is activated. The amount of reduction is determined by the severity of current
overload.
Note 7: No diode, inductor or capacitor connected to output pin.
Note 8: Feedback pin removed from output and connected to 0V to force the output transistor switch ON.
Note 9: Feedback pin removed from output and connected to 12V for the 3.3V, 5V, and the ADJ. version to force the output transistor switch OFF.
Note 10: VIN = 60V.
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