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參數(shù)資料
| 型號： | LM25011AQ1MY |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, 2000 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | MSOP-10 |
| 文件頁數(shù)： | 14/20頁 |
| 文件大?。?/td> | 458K |
| 代理商： | LM25011AQ1MY |
Pin Descriptions
Pin No.
Name
Description
Application Information
1
VIN
Input supply voltage
Operating input range is 6V to 42V. Transient capability is 45V. A low ESR
capacitor must be placed as close as possible to the VIN and SGND pins.
2
RT
On-time Control
An external resistor from VIN to this pin sets the buck switch on-time, and
the switching frequency.
3
PGD
Power Good
Logic output indicates when the voltage at the FB pin has increased to
above 95% of the internal reference voltage. Hysteresis is provided. An
external pull-up resistor to a voltage less than 7V is required.
4
SS
Soft-Start
An internal current source charges an external capacitor to provide the soft-
start function.
5
SGND
Signal Ground
Ground for all internal circuitry other than the current limit sense circuit.
6
FB
Feedback
Internally connected to the regulation comparator. The regulation level is
2.51V.
7
CSG
Current Sense Ground
Ground connection for the current limit sensing circuit. Connect to ground
and to the current sense resistor.
8
CS
Current sense
Connect to the current sense resistor and the anode of the free-wheeling
diode.
9
SW
Switching Node
Internally connected to the buck switch source. Connect to the external
inductor, cathode of the free-wheeling diode, and bootstrap capacitor.
10
BST
Bootstrap capacitor connection of the
buck switch gate driver.
Connect a 0.1 F capacitor from SW to this pin. The capacitor is charged
during the buck switch off-time via an internal diode.
3
www.national.com
LM25011/LM25011QLM25011A/LM25011AQ
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM25011AQ1MY/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 |
| LM25011AQ1MYX | 制造商:TI 制造商全稱:Texas Instruments 功能描述:42V 2A Constant On-Time Switching Regulator With Adjustable Current Limit |
| LM25011AQ1MYX/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 |
| LM25011MY | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:42V, 2A Constant On-Time Switching Regulator with Adjustable Current Limit |
| LM25011MY/NOPB | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 42V,2A CONSTANT ON- TIME 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 |
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