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參數(shù)資料
| 型號(hào)： | LM2733 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 0.6/1.6 MHz Boost Converters With 40V Internal FET |
| 中文描述： | 0.6/1.6兆赫40V的升壓轉(zhuǎn)換器內(nèi)部場(chǎng)效應(yīng)管 |
| 文件頁(yè)數(shù)： | 4/13頁(yè) |
| 文件大?。?/td> | 507K |
| 代理商： | LM2733 |
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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
Machine Model
0.4V to +6V
0.4V to +40V
0.4V to +14.5V
0.4V to +14.5V
265C/W
2 kV
200V
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
1.0
Typical
(Note 5)
Max
(Note 4)
14
Units
V
IN
I
SW
R
DS
(ON)
SHDN
TH
Input Voltage
Switch Current Limit
Switch ON Resistance
Shutdown Threshold
V
A
(Note 6)
I
SW
= 100 mA
Device ON
Device OFF
V
SHDN
= 0
V
SHDN
= 5V
V
IN
= 3V
1.5
500
650
m
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
I
Q
V
FB
= 1.23V
V
SHDN
= 5V, Switching "X"
V
SHDN
= 5V, Switching "Y"
V
SHDN
= 5V, Not Switching
V
SHDN
= 0
2.7V
≤
V
IN
≤
14V
60
2.1
1.1
400
0.024
nA
3.0
2
500
1
mA
μA
FB Voltage Line Regulation
0.02
%/V
F
SW
Switching Frequency
“X” Option
“Y” Option
“X” Option
“Y” Option
Not Switching V
SW
= 5V
1.15
0.40
87
93
1.6
0.60
93
96
1.85
0.8
MHz
D
MAX
Maximum Duty Cycle
%
I
L
Switch Leakage
1
μA
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the
device outside of the limits set forth under the operating ratings which specify the intended range of operating conditions.
Note 2:
The maximum power dissipation which can be safely dissipated for any application is a function of the maximum junction temperature, T
J
(MAX) = 125C,
the junction-to-ambient thermal resistance for the SOT-23 package,
θ
J-A
= 265C/W, and the ambient temperature, T
A
. The maximum allowable power dissipation
at any ambient temperature for designs using this device can be calculated using the formula:
If power dissipation exceeds the maximum specified above, the internal thermal protection circuitry will protect the device by reducing the output voltage as required
to maintain a safe junction temperature.
Note 3:
The human body model is a 100 pF capacitor discharged through a 1.5 k
resistor into each pin. The machine model is a 200 pF capacitor discharged
directly into each pin.
Note 4:
Limits are guaranteed by testing, statistical correlation, or design.
Note 5:
Typical values are derived from the mean value of a large quantity of samples tested during characterization and represent the most likely expected value
of the parameter at room temperature.
Note 6:
Switch current limit is dependent on duty cycle (see Typical Performance Characteristics). Limits shown are for duty cycles
≤
50%.
L
www.national.com
4
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