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参数资料
| 型号： | LM3544MX-H/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封装： | SOIC-16 |
| 文件页数： | 7/13页 |
| 文件大小： | 785K |
| 代理商： | LM3544MX-H/NOPB |
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Voltage at IN
X and OUTX pins
0.3V to 6V
Voltage at EN
X(ENX) and FLAGX
pins
0.3V to 5.5V
Power Dissipation
Internally Limited
Maximum Junction Temperature
150C
Storage Temperature Range
65C to 150C
Lead Temperature Range
(Soldering, 5 sec.)
260C
ESD Rating (Note 3)
2 kV
Operating Ratings
Supply Voltage Range
2.7V to 5.5V
Continuous Output Current Range
(Each Output)
0 mA to 500 mA
Junction Temperature Range
40C to 125C
DC Electrical Characteristics
Limits in standard typeface are for T
J = 25C, and limits in boldface type apply over the full operating temperature range. Un-
less otherwise specified: V
IN = 5.0V, ENX =VIN (LM3544-H) or ENX = 0V (LM3544-L).
Symbol
Parameter
Conditions
Min
Typ
Max
Units
R
ON
On Resistance
V
IN = 5V, IOUTX = 0.5A
90
125
m
V
IN = 3.3V, IOUTX = 0.5A
95
130
I
OUT
X Continuous Output
Current
3.0V
≤ V
IN
≤ 5.5V
0.5
A
I
LEAK-OUT
OUT
X Leakage Current
EN
X = 0 (ENX =VIN);
T
J = 25C
0.01
1
A
EN
X = 0 (ENX =VIN);
40
≤ T
J
≤ 125C
10
A
I
SC
OUT
X Short-Circuit Current
OUT
X Connected to GND
0.8
1.25
A
OC
THRESH
Overcurrent Threshold
2.0
3.2
A
V
L_FLAG
FLAG
X Output-Low Voltage
I(FLAG
X)=10mA
0.1
0.3
V
I
LEAK-FLAG
FLAG
X Leakage Current
2.7
≤ V
FLAG
≤ 5.5V
0.2
1
A
I
LEAK-EN
EN
x Input Leakage Current
EN
x/ENx =0Vor
EN
x/ENx =VIN
0.5
A
V
IH
EN/EN Input Logic High
2.7V
≤ V
IN
≤ 5.5V
2.4
V
IL
EN/EN Input Logic Low
4.5V
≤ V
IN
≤ 5.5V
0.8
V
2.7V
≤ V
IN
≤ 4.5V
0.4
V
UVLO
Under-Voltage Lockout
Threshold
1.8
V
I
DDON
Operational Supply Current
EN
x =VIN (ENx =0);
T
J = 25C
375
600
A
EN
x =VIN (ENx =0);
40C
≤ T
J
≤ 125C
800
A
I
DDOFF
Shutdown Supply Current
EN
x = 0 (ENx =VIN);
T
J = 25C
1A
40C
≤ T
J
≤ 125C
5
A
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 (TJMAX), Junction to Ambient Thermal Resistance (θJA), and
the Ambient Temperature (TA). The LM3544 in the 16-pin SOIC package has a TJMAX of 150C and a θJA of 130C/W. The maximum allowable power dissipation
at any temperature is PMAX =(TJMAX TA)/θJA. 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.
LM3544
www.national.com
3
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