參數(shù)資料
型號： LM5010MHX
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述： 1.5 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO14
封裝： TSSOP-14
文件頁數(shù)： 16/19頁
文件大?。?/td> 453K
代理商： LM5010MHX
Applications Information
(Continued)
INCREASING THE CURRENT LIMIT THRESHOLD
The current limit threshold is nominally 1.25A, with a mini-
mum guaranteed value of 1.0A. If, at maximum load current,
the lower peak of the inductor current (I
in
Figure 13
)
exceeds 1.0A, resistor R
must be added between S
and I
to increase the current limit threshold to equal or
exceed that lower peak current. This resistor diverts some of
the recirculating current from the internal sense resistor so
that a higher current level is needed to switch the internal
current limit comparator. I
PK-
is calculated from:
(11)
where I
is the maximum load current, and I
is
the minimum ripple current calculated using Equation 10.
R
CL
is calculated from:
20119934
FIGURE 15. Efficiency vs V
IN
Circuit of
Figure 14
20119935
FIGURE 16. Efficiency vs Load Current and V
IN
Circuit of
Figure 14
20119936
FIGURE 17. Output Voltage Ripple vs V
IN
Circuit of
Figure 14
20119937
FIGURE 18. Frequency vs V
IN
Circuit of
Figure 14
L
www.national.com
16
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM5010MHX/NOPB 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
LM5010SD 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
LM5010SD/MEY8 制造商:Texas Instruments 功能描述:
LM5010SD/NOPB 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 HIGH VOLTAGE 1A STEP DOWN SWITCHING REG 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
LM5010SDX 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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