參數(shù)資料
型號: LM2722M
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 功率晶體管
英文描述: High Speed Synchronous/Asynchronous MOSFET Driver
中文描述: 3.2 A HALF BRDG BASED MOSFET DRIVER, PDSO8
封裝: PLASTIC, SO-8
文件頁數(shù): 5/8頁
文件大小: 162K
代理商: LM2722M
Electrical Characteristics
(Continued)
VCC = CBOOT = 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_EN
SYNC_EN Pin Leakage
Current
EN = 0V
t
on_min
Minimum Positive Input
Pulse Width
(Note 4)
t
off_min
Minimum Negative Input
Pulse Width
(Note 5)
V
IH_PWM
PWM_IN High Level Input
Voltage
high from 0V
V
IL_PWM
PWM_IN Low Level Input
Voltage
low from 5V
Min
2
2
Typ
Max
2
2
Units
EN = 5V
μA
55
ns
55
When PWM_IN pin goes
2.4
V
When PWM_IN pin goes
0.8
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. Operating Ratings do not imply guaranteed performance limits.
Note 2:
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
JA
, for the LM2722, it is 172C/W. For a T
JMAX
of 150C and T
A
of 25C, the maximum allowable power dissipation is 0.7W.
Note 3:
ESD machine model susceptibility is 100V.
Note 4:
If after a rising edge, a falling edge occurs sooner than the specified value, the IC may intermittently fail to turn on the bottom gate when the top gate is
off. As the falling edge occurs sooner and sooner, the driver may start to ignore the pulse and produce no output.
Note 5:
If after a falling edge, a rising edge occurs sooner than the specified value, the IC may intermittently fail to turn on the top gate when the bottom gate is
off. As the rising edge occurs sooner and sooner, the driver may start to ignore the pulse and produce no output.
Timing Diagram
20028903
L
www.national.com
5
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