LM2722 National Semiconductor, LM2722 Datasheet - Page 5

• Manufacturer Part Number: LM2722
• Description: High Speed Synchronous/Asynchronous MOSFET Driver
• Manufacturer: National Semiconductor

I
t
t
V
V
leak_EN
on_min
off_min
Electrical Characteristics
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
ambient temperature, T
ambient thermal resistance,
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
VCC = CBOOT = 5V, SW = GND = 0V, unless otherwise specified. Typicals and limits appearing in plain type apply for T
T
IH_PWM
IL_PWM
J
Symbol
= +25˚C. Limits appearing in boldface type apply over the entire operating temperature range.
SYNC_EN Pin Leakage
Current
Minimum Positive Input
Pulse Width
(Note 4)
Minimum Negative Input
Pulse Width
(Note 5)
PWM_IN High Level Input
Voltage
PWM_IN Low Level Input
Voltage
A
. The maximum allowable power dissipation at any ambient temperature is calculated using: P
JA
Parameter
, for the LM2722, it is 172˚C/W. For a T
(Continued)
Condition
EN = 5V
EN = 0V
When PWM_IN pin goes
high from 0V
When PWM_IN pin goes
low from 5V
JMAX
of 150˚C and T
5
A
of 25˚C, the maximum allowable power dissipation is 0.7W.
JMAX
Min
, the junction-to-ambient thermal resistance,
2.4
−2
−2
MAX
Typ
55
55
= (T
JMAX
-T
20028903
A
) /
Max
0.8
2
2
JA
. The junction-to-
www.national.com
JA
, and the
Units
µA
ns
V
A
=