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LM5010A Datasheet(数据表) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
部件型号  LM5010A
说明  High Voltage 1A Step Down Switching Regulator
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
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LM5010A Datasheet(HTML) 5 Page - National Semiconductor (TI)

 
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Electrical Charateristics Specifications with standard type are for T
J = 25˚C only; limits in boldface type apply
over the full Operating Junction Temperature (T
J) range. 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 = 48V, RON = 200k
Ω. See (Note 5). (Continued)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Off Timer
t
OFF
Minimum Off-time
260
ns
Regulation and Over-Voltage Comparators (FB Pin)
V
REF
FB regulation threshold
T
J
≤ 125˚C
T
J
≤ 150˚C
2.445
2.435
2.50
2.550
V
FB over-voltage threshold
2.9
V
FB bias current
1nA
Thermal Shutdown
T
SD
Thermal shutdown temperature
175
˚C
Thermal shutdown hysteresis
20
˚C
Thermal Resistance
θ
JA
Junction to Ambient, 0 LFPM
Air Flow
SDC Package
MXA Package
40
40
˚C/W
θ
JC
Junction to Case
SDC Package
MXA Package
5.2
5.2
˚C/W
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device
is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: The human body model is a 100pF capacitor discharged through a 1.5k
Ω resistor into each pin.
Note 3: VCC provides bias for the internal gate drive and control circuits. Device thermal limitations limit external loading.
Note 4: For detailed information on soldering plastic TSSOP and LLP packages refer to the Packaging Data Book available from National Semiconductor
Corporation.
Note 5: Typical specifications represent the most likely parametric norm at 25˚C operation.
www.national.com
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