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參數(shù)資料
| 型號： | AAT4610IGV-T1 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | Current Limited Load Switch in SOT-23 Package |
| 中文描述： | 電流限制負(fù)荷開關(guān)采用SOT - 23封裝 |
| 文件頁數(shù)： | 9/10頁 |
| 文件大?。?/td> | 312K |
| 代理商： | AAT4610IGV-T1 |
Operation in Current Limit
When a heavy load is applied to the output of the
AAT4610, the load current is limited to the value of
I
LIM
determined by R
SET
. See the figure "Overload
Operation". Since the load is demanding more cur-
rent than I
LIM
, the voltage at the output drops. This
causes the AAT4610 to dissipate a larger than nor-
mal quantity of power, and its die temperature to
increase. When the die temperature exceeds an
over temperature limit, the AAT4610 will shut down
until is has cooled sufficiently, at which point it will
startup again. The AAT4610 will continue to cycle
on and off until the load is removed, power is
removed, or until a logic high level is applied to ON
(pin 4).
Enable Input
In many systems, power planes are controlled by
integrated circuits which run at lower voltages than
the power plane itself. The enable input ON (pin 4)
of the AAT4610 has low and high threshold volt-
ages that accommodate this condition. The thresh-
old voltages are compatible with 5 volt TTL, and 2.5
volt to 5 volt CMOS.
Reverse Voltage
The AAT4610 is designed to control current flowing
from IN to OUT. If a voltage is applied to OUT which
is greater than the voltage on IN, large currents may
flow. This could cause damage to the AAT4610.
AAT4610
Current Limited Load Switch in SOT-23 Package
4610.2001.
9
.0.9
7
9
Overload Operation
0
-0.05
1
2
3
4
5
0
0.05
0.1
0.15
0.2
0.25
0.3
Time ( s )
O
0
0.25
0.5
0.75
1
O
Output Current
Output Voltage
1
load is turned on at time = 0
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