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參數(shù)資料
| 型號： | LM3544MX-L |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Quad Port USB Power Distribution Switch and Over-Current Protection |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封裝： | SOIC-16 |
| 文件頁數(shù)： | 3/13頁 |
| 文件大?。?/td> | 349K |
| 代理商： | LM3544MX-L |
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please
contact
the
National
Office/Distributors for availability and specifications.
(Note 1)
Semiconductor
Sales
Voltage at IN
X
and OUT
X
pins
Voltage at EN
X
(EN
X
) and FLAG
X
pins
Power Dissipation
Maximum Junction Temperature
Storage Temperature Range
0.3V to 6V
0.3V to 5.5V
(Note 2)
Internally Limited
150C
65C to 150C
Lead Temperature Range
(Soldering, 5 sec.)
ESD Rating (Note 3)
260C
2 kV
Operating Ratings
Supply Voltage Range
Continuous Output Current Range
(Each Output)
Junction Temperature Range
2.7V to 5.5V
0 mA to 500 mA
40C to 125C
DC Electrical Characteristics
Limits in standard typeface are for T
= 25C, and limits in
boldface
type apply over the full operating temperature range. Un-
less otherwise specified: V
IN
= 5.0V, EN
X
= V
IN
(LM3544-H) or EN
X
= 0V (LM3544-L).
Symbol
Parameter
Conditions
V
IN
= 5V, I
OUTX
= 0.5A
V
IN
= 3.3V, I
OUTX
= 0.5A
I
OUT
OUT
X
Continuous Output
Current
I
LEAK-OUT
OUT
X
Leakage Current
EN
X
= 0 (EN
X
= V
IN
);
T
J
= 25C
EN
X
= 0 (EN
X
= V
IN
);
40
≤
T
J
≤
125C
I
SC
OUT
X
Short-Circuit Current
(Note 4)
OC
THRESH
Overcurrent Threshold
V
L_FLAG
FLAG
X
Output-Low Voltage
I(FLAG
X
) = 10 mA
I
LEAK-FLAG
FLAG
X
Leakage Current
2.7
≤
V
FLAG
≤
5.5V
I
LEAK-EN
EN
x
Input Leakage Current
EN
x
/EN
x
= 0V or
EN
x
/EN
x
= V
IN
V
IH
EN/EN Input Logic High
2.7V
≤
V
IN
≤
5.5V
V
IL
EN/EN Input Logic Low
4.5V
≤
V
IN
≤
5.5V
2.7V
≤
V
IN
≤
4.5V
Under-Voltage Lockout
Threshold
EN
x
= V
IN
(EN
x
= 0 );
T
J
= 25C
EN
x
= V
IN
(EN
x
= 0 );
40C
≤
T
J
≤
125C
EN
x
= 0 (EN
x
= V
IN
);
T
J
= 25C
40C
≤
T
J
≤
125C
Min
Typ
90
95
Max
125
130
Units
R
ON
On Resistance
m
3.0V
≤
V
IN
≤
5.5V
0.5
A
0.01
1
μA
10
μA
OUT
X
Connected to GND
0.8
1.25
A
2.0
0.1
0.2
3.2
0.3
1
0.5
A
V
μA
μA
0.5
2.4
V
V
V
V
0.8
0.4
V
UVLO
1.8
I
DDON
Operational Supply Current
375
600
μA
800
μA
I
DDOFF
Shutdown Supply Current
1
μA
5
μA
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device
beyond its rated operating conditions.
Note 2:
The maximum allowable power dissipation is a function of the Maximum Junction Temperature (T
JMAX
), Junction to Ambient Thermal Resistance (
θ
JA
), and
the Ambient Temperature (T
). The LM3544 in the 16-pin SOIC package has a T
of 150C and a
θ
at any temperature is P
MAX
= (T
JMAX
T
A
)/
θ
JA
. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the part will go into
thermal shutdown.
Note 3:
The Human body model is a 100 pF capacitor discharged through a 1.5 k
resistor into each pin.
Note 4:
Thermal Shutdown will protect the device from permanent damage.
L
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