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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)： | 6/16頁 |
| 文件大?。?/td> | 528K |
| 代理商： | LM2731 |
Electrical Characteristics
(Continued)
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)
Typical
(Note 5)
Max
(Note 4)
1
Units
I
L
Switch Leakage
Not Switching V
SW
= 5V
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.
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).
Note 7:
Guaranteed limits are the same for Vin = 3.3V input.
Note 8:
L = 10 μH, C
OUT
= 4.7 μF, duty cycle = maximum
L
www.national.com
6
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| LM27313XMF | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
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