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參數(shù)資料
| 型號： | LM2576HVT-ADJFLOWLB03/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, ZFM5 |
| 封裝： | BENT STAGGERED, TO-220, 5 PIN |
| 文件頁數(shù)： | 5/24頁 |
| 文件大?。?/td> | 750K |
| 代理商： | LM2576HVT-ADJFLOWLB03/NOPB |
LM2576 Series Buck Regulator Design Procedure (Continued)
PROCEDURE (Adjustable Output Voltage Versions)
EXAMPLE (Adjustable Output Voltage Versions)
Given: V
OUT = Regulated Output Voltage VIN(Max) =
Maximum Input Voltage I
LOAD(Max) = Maximum Load
Current F = Switching Frequency (Fixed at 52 kHz)
Given: V
OUT = 10V VIN(Max) = 25V ILOAD(Max) = 3A F =
52 kHz
1. Programming Output Voltage (Selecting R1 and R2,
as shown in Figure 2) Use the following formula to select
the appropriate resistor values.
R
1 can be between 1k and 5k. (For best temperature
coefficient and stability with time, use 1% metal film resis-
tors)
1. Programming Output Voltage (Selecting R1 and R2)
R
2 = 1k (8.13 1) = 7.13k, closest 1% value is 7.15k
01147613
FIGURE 7. LM2576(HV)-ADJ
LM2576/LM2576HV
www.national.com
13
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| LM2576SX-12/NOPB | 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5 |
| LM2576SX-15/NOPB | 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5 |
| LM2576HVT-15FLOWLB03 | 3.5 A SWITCHING REGULATOR, 52 kHz SWITCHING FREQ-MAX, PSFM5 |
| LM2576T-3.3FLOWLB03 | 3.5 A SWITCHING REGULATOR, 52 kHz SWITCHING FREQ-MAX, PSFM5 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2576HVT-ADJNOPB | 制造商:National Semiconductor Corporation 功能描述:Swithed-Mode Power Supply Controller, Voltage Mode Type, Bi-Polar, 5 Pin, Plastic, SIP |
| LM2576HVT-ADJP+ | 制造商:National Semiconductor Corporation 功能描述:LM2576HVT-ADJP+ 制造商:Texas Instruments 功能描述:LM2576HVT-ADJP+ |
| LM2576K-12 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Simple Switcher⑩ 3 Amp Step-Down Voltage Regulator |
| LM2576K-15 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Simple Switcher⑩ 3 Amp Step-Down Voltage Regulator |
| LM2576K-5.0 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Simple Switcher⑩ 3 Amp Step-Down Voltage Regulator |
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