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LM2724ALD Datasheet(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM2724ALD
Description  High Speed 3A Synchronous MOSFET Driver
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2724ALD Datasheet(HTML) 5 Page - National Semiconductor (TI)

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Electrical Characteristics
LM2724A (Continued)
V
CC = BOOT = SYNC = 5V, SW = GND = 0V, unless otherwise specified. Typicals and limits appearing in plain type apply for
T
A =TJ = +25˚C. Limits appearing in boldface type apply over the entire operating temperature range.
Symbol
Parameter
Condition
Min
Typ
Max
Units
I
leak_IN
IN Pin Leakage Current
IN = 0V, Source Current
2
µA
IN = 5V, Sink Current
10
t
on_min1
Minimum Positive Pulse
Width at IN Pin
(Note 5)
160
ns
t
on_min2
Minimum Positive Pulse
Width at IN Pin for HG to
Respond
(Note 6)
45
t
on_min3
Minimum Positive Pulse
Width at IN Pin for LG to
Respond
(Note 7)
10
t
off_min1
Minimum Negative Pulse
Width at IN Pin for LG to
Respond
(Note 8)
40
t
off_min2
Minimum Negative Pulse
Width at IN Pin for HG to
Respond
(Note 9)
5
V
IH_IN
IN High Level Input
Voltage
When IN pin goes high from
0V
55%
V
CC
V
IL_IN
IN Low Level Input
Voltage
When IN pin goes low from
5V
25%
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating ratings are conditions under which the device operates
correctly. The gaurnteed specifications apply only for the listed test conditions. Some performance characteristics may degrade when the part is not operated under
listed conditions.
Note 2: If BOOT voltage exceeds this value, the ESD structure will degrade.
Note 3: Maximum allowable power dissipation is a function of the maximum junction temperature, TJMAX, the junction-to-ambient thermal resistance, θJA, and the
ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is calculated using: PMAX =(TJMAX-TA)/ θJA. The junction-to-
ambient thermal resistance,
θJA, for LM2724A is 172˚C/W. For a TJMAX of 150˚C and TA of 25˚C, the maximum allowable power dissipation is 0.7W. The θJA, for
LM2724A LLP package is 39˚C/W. For a TJMAX of 150˚C and TA of 25˚C, the maximum allowable power dissipation is 3.2W.
Note 4: ESD machine model susceptibility is 200V.
Note 5: If the positive pulse width at IN pin is below this value but above ton_min2, the pulse is internally stretched to ton_min1, so the HG width will be a constant
value.
Note 6: If the positive pulse width at IN pin is below this value but above ton_min3, then HG stops responding while LG still responds to the pulse.
Note 7: If the positive pulse width at IN pin is below this value, the pulse will be completely ignored. Neither HG or LG will respond to it.
Note 8: If the negative pulse width at IN pin is below this value but above toff_min2, then LG stops responding while HG still responds.
Note 9: If the negative pulse width at IN pin is below this value, the pulse will be completely ignored. Neither HG or LG will respond to it.
www.national.com
5


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