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參數(shù)資料
| 型號： | LM2731 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 0.6/1.6 MHz Boost Converters With 22V Internal FET Switch in SOT-23 |
| 中文描述： | 0.6/1.6兆赫加強(qiáng)與22V的內(nèi)部場效應(yīng)管開關(guān)轉(zhuǎn)換器采用SOT - 23 |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 528K |
| 代理商： | LM2731 |
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 1)
Storage Temperature Range
Operating Junction
Temperature Range
Lead Temp. (Soldering, 5 sec.)
Power Dissipation (Note 2)
65C to +150C
40C to +125C
300C
Internally Limited
FB Pin Voltage
SW Pin Voltage
Input Supply Voltage
Shutdown Input Voltage
(Survival)
θ
J-A
(SOT23-5)
ESD Rating (Note 3)
Human Body Model
0.4V to +6V
0.4V to +22V
0.4V to +14.5V
0.4V to +14.5V
265C/W
2 kV
Electrical Characteristics
Limits in standard typeface are for T
= 25C, and limits in
boldface type
apply over the full operating temperature range
(40C
≤
T
J
≤
+125C). Unless otherwise specified: V
IN
= 5V, V
SHDN
= 5V, I
L
= 0A.
Symbol
Parameter
Conditions
Min
(Note 4)
2.7
5.4
8
13
8.25
10.5
14
3.75
5
8.75
5
5.5
9
1.8
1.4
Typical
(Note 5)
Max
(Note 4)
14
Units
V
IN
V
OUT (MIN)
Input Voltage
Minimum Output Voltage
Under Load
V
V
R
L
= 43
X Option
(Note 8)
V
IN
= 2.7V
V
IN
= 3.3V
V
IN
= 5V
V
IN
= 2.7V
V
IN
= 3.3V
V
IN
= 5V
V
IN
= 2.7V
V
IN
= 3.3V
V
IN
= 5V
V
IN
= 2.7V
V
IN
= 3.3V
V
IN
= 5V
7
10
17
10
12
16
5
6.5
11
6
7.5
11
2
R
L
= 43
Y Option
(Note 8)
R
L
= 15
X Option
(Note 8)
R
L
= 15
Y Option
(Note 8)
I
SW
Switch Current Limit
(Note 6)
A
R
DS
(ON)
Switch ON Resistance
I
SW
= 100 mA
Vin = 5V
I
SW
= 100 mA
Vin = 3.3V
Device ON
Device OFF
V
SHDN
= 0
V
SHDN
= 5V
V
IN
= 3V
260
400
500
450
550
m
300
SHDN
TH
Shutdown Threshold
1.5
V
0.50
I
SHDN
Shutdown Pin Bias
Current
0
0
μA
2
V
FB
Feedback Pin Reference
Voltage
Feedback Pin Bias
Current
Quiescent Current
1.205
1.230
1.255
V
I
FB
V
FB
= 1.23V
60
500
nA
I
Q
V
SHDN
= 5V, Switching "X"
V
SHDN
= 5V, Switching "Y"
V
SHDN
= 5V, Not Switching
V
SHDN
= 0
2.7V
≤
V
IN
≤
14V
2
3.0
2
500
1
mA
1.0
400
0.024
μA
FB Voltage Line
Regulation
0.02
%/V
F
SW
Switching Frequency
(Note 7)
“X” Option
“Y” Option
“X” Option
“Y” Option
1
1.6
0.60
93
96
1.85
0.8
MHz
0.40
86
92
D
MAX
Maximum Duty Cycle
(Note 7)
%
L
www.national.com
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