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LMZ14203 Folha de dados(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Nome de Peças LMZ14203
Descrição Electrónicos  3A SIMPLE SWITCHER짰Power Module with 42V Maximum Input Voltage
Download  18 Pages
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Fabricante Electrônico  NSC [National Semiconductor (TI)]
Página de início  http://www.national.com
Logo NSC - National Semiconductor (TI)

LMZ14203 Folha de dados(HTML) 4 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
VIN, RON to GND
-0.3V to 43.5V
EN, FB, SS to GND
-0.3V to 7V
Junction Temperature
150°C
Storage Temperature Range
-65°C to 150°C
ESD Susceptibility(Note 2)
± 2 kV
For soldering specifications:
see product folder at www.national.com and
www.national.com/ms/MS/MS-SOLDERING.pdf
Operating Ratings (Note 1)
V
IN
6V to 42V
EN
0V to 6.5V
Operation Junction Temperature
−40°C to 125°C
Electrical Characteristics Limits in standard type are for T
J = 25°C only; limits in boldface type apply over the
junction temperature (T
J) range of -40°C to +125°C. Minimum and Maximum limits are guaranteed through test, design or statistical
correlation. Typical values represent the most likely parametric norm at T
J = 25°C, and are provided for reference purposes only.
Unless otherwise stated the following conditions apply: V
IN = 24V, Vout = 3.3V
Symbol
Parameter
Conditions
Min
(Note 3)
Typ
(Note 4)
Max
(Note 3)
Units
SYSTEM PARAMETERS
Enable Control
V
EN
EN threshold trip point
V
EN rising
1.1
1.18
1.25
V
V
EN-HYS
EN threshold hysteresis
V
EN falling
90
mV
Soft-Start
I
SS
SS source current
V
SS = 0V
5
8
11
µA
I
SS-DIS
SS discharge current
-200
µA
Current Limit
I
CL
Current limit threshold
d.c. average
V
IN= 12V to 24V
3.2
4.2
5.25
A
ON/OFF Timer
t
ON-MIN
ON timer minimum pulse width
150
ns
t
OFF
OFF timer pulse width
260
ns
Regulation and Over-Voltage Comparator
V
FB
In-regulation feedback voltage
V
SS >+ 0.8V
T
J = -40°C to 125°C
I
O = 3A
0.784
0.804
0.825
V
V
SS >+ 0.8V
T
J = 25°C
I
O = 10 mA
0.786
0.802
0.818
V
V
FB-OV
Feedback over-voltage
protection threshold
0.92
V
I
FB
Feedback input bias current
5
nA
I
Q
Non Switching Input Current
V
FB= 0.86V
1
mA
I
SD
Shut Down Quiescent Current
V
EN= 0V
25
μA
Thermal Characteristics
T
SD
Thermal Shutdown
Rising
165
°C
T
SD-HYST
Thermal shutdown hysteresis
Falling
15
°C
θ
JA
Junction to Ambient
4 layer JEDEC Printed Circuit Board,
100 vias, No air flow
19.3
°C/W
2 layer JEDEC Printed Circuit Board, No
air flow
21.5
°C/W
θ
JC
Junction to Case
No air flow
1.9
°C/W
PERFORMANCE PARAMETERS
ΔV
O
Output Voltage Ripple
8
mV
PP
ΔV
O/ΔVIN
Line Regulation
V
IN = 12V to 42V, IO= 3A
.01
%
ΔV
O/IOUT
Load Regulation
V
IN = 24V
1.5
mV/A
www.national.com
4


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