參數(shù)資料
型號： LM2576T-3.3FLOWLB03
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： 3.5 A SWITCHING REGULATOR, 52 kHz SWITCHING FREQ-MAX, PSFM5
封裝： BENT STAGGERED, TO-220, 5 PIN
文件頁數(shù)： 5/24頁
文件大?。?/td> 750K
代理商： LM2576T-3.3FLOWLB03
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
相關(guān)PDF資料
PDF描述
LM2576T-ADJFLOWLF03 3.5 A SWITCHING REGULATOR, 52 kHz SWITCHING FREQ-MAX, PSFM5
LM2576HVT-15/LB03 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSFM5
LM2576TV-005G 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PZFM5
LM2576T-015G 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSFM5
LM2577M-12/NOPB 6 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, PDSO24
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM2576T-5 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Easy Switcher 3.0A Step-Down Voltage Regulator
LM2576T5.0 制造商:National Semiconductor Corporation 功能描述:
LM2576T-5.0 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
LM2576T5.0 DC94 制造商:SEM 功能描述:2576
LM2576T-5.0/LB02 制造商:Texas Instruments 功能描述:Conv DC-DC Single Non-Inv/Inv/Step Up/Step Down 4V to 40V 5-Pin(5+Tab) TO-220
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