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參數(shù)資料
| 型號(hào)： | LM2724AM |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類(lèi)： | 功率晶體管 |
| 英文描述： | High Speed 3A Synchronous MOSFET Driver |
| 中文描述： | 3.2 A HALF BRDG BASED MOSFET DRIVER, PDSO8 |
| 封裝： | SO-8 |
| 文件頁(yè)數(shù)： | 5/8頁(yè) |
| 文件大?。?/td> | 135K |
| 代理商： | LM2724AM |
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
= T
J
= +25C. Limits appearing in
boldface
type apply over the entire operating temperature range.
Symbol
Parameter
Condition
I
leak_IN
IN Pin Leakage Current
IN = 0V, Source Current
IN = 5V, Sink Current
t
on_min1
Minimum Positive Pulse
Width at IN Pin
(Note 5)
t
on_min2
Minimum Positive Pulse
Width at IN Pin for HG to
Respond
(Note 6)
t
on_min3
Minimum Positive Pulse
Respond
(Note 7)
t
off_min1
Minimum Negative Pulse
Width at IN Pin for LG to
Respond
(Note 8)
t
off_min2
Minimum Negative Pulse
Width at IN Pin for HG to
Respond
(Note 9)
V
IH_IN
IN High Level Input
Voltage
0V
V
IL_IN
IN Low Level Input
Voltage
5V
Min
Typ
Max
2
10
Units
μA
160
ns
45
10
40
5
When IN pin goes high from
55%
V
CC
When IN pin goes low from
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, T
, the junction-to-ambient thermal resistance,
θ
, and the
ambient temperature, T
. The maximum allowable power dissipation at any ambient temperature is calculated using: P
= (T
-T
) /
θ
. The junction-to-
ambient thermal resistance,
θ
, for LM2724A is 172C/W. For a T
of 150C and T
of 25C, the maximum allowable power dissipation is 0.7W. The
θ
JA
, for
LM2724A LLP package is 39C/W. For a T
JMAX
of 150C and T
A
of 25C, 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 t
on_min2
, the pulse is internally stretched to t
on_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 t
on_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 t
off_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.
L
www.national.com
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