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參數(shù)資料
| 型號： | LM25007MM |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 42V, 0.5A Step-Down Switching Regulator |
| 中文描述： | 0.9 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 615K |
| 代理商： | LM25007MM |
N - Channel Buck Switch and
Driver
(Continued)
An external re-circulating diode from the SW pin to ground is
necessary to carry the inductor current after the internal
Buck switch turns off. This external diode must be of the
Ultra-fast or Schottky type to reduce turn-on losses and
current over-shoot. The reverse voltage rating of the re-
circulating diode must be greater than the maximum line
input voltage.
10V, 400mA Demo Board Bill of Materials (See Typical Application Circuit)
Thermal Protection
Internal Thermal Shutdown circuitry is provided to protect the
integrated circuit in the event the maximum junction tem-
perature is exceeded. When thermal protection is activated,
typically at 165 degrees Celsius, the controller is forced into
a low power reset state, disabling the output driver. This
feature is provided to prevent catastrophic failures from ac-
cidental device overheating.
ITEM
C1
C2
C3
C4
C5
PART NUMBER
C4532X7R2A105M
C4532X7R1E156M
C1206C104K5RAC
C1206C103K5RAC
C3216X7R2A104KT
DESCRIPTION
CAPACITOR, CER, TDK
CAPACITOR, CER, TDK
CAPACITOR, CER, KEMET
CAPACITOR, CER, KEMET
CAPACITOR, CER, TDK
VALUE
1μ, 100V
15μ, 25V
0.1μ, 50V
0.01μ, 50V
0.1μ, 100V
D1
MURA110T3
DIODE, 100V, ON SEMI
L1
SLF7045T-101MR60-1
BUCK INDUCTOR, TDK
100μH
R1
R2
R3
R4
R5
CRCW12062003F
CRCW12061003F
CRCW12063011F
CRCW12061001F
CRCW12061R00F
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
200K
100K
3.01K
1K
1
U1
LM25007
REGULATOR, NATIONAL
L
www.national.com
10
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| LM25007SDX | 42V, 0.5A Step-Down Switching Regulator |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM25007MM/NOPB | 功能描述:直流/直流開關調(diào)節(jié)器 42V,0.5A STEP-DOWN SWITCHING REG RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| LM25007MMX | 功能描述:直流/直流開關轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率: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 安裝風格:SMD/SMT |
| LM25007MMX/NOPB | 功能描述:直流/直流開關轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率: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 安裝風格:SMD/SMT |
| LM25007SD | 功能描述:直流/直流開關轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率: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 安裝風格:SMD/SMT |
| LM25007SD/NOPB | 功能描述:直流/直流開關轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率: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 安裝風格:SMD/SMT |
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