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參數(shù)資料
| 型號： | LM2599S-3.3 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator, with Features |
| 中文描述： | 7.5 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, PSSO7 |
| 封裝： | TO-263, 7 PIN |
| 文件頁數(shù)： | 28/31頁 |
| 文件大小： | 812K |
| 代理商： | LM2599S-3.3 |
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Application Information
(Continued)
quirement however, that there be a minimum load of 1.2A on
the regulated positive output for the charge pump to work
correctly. Also, resistor R1 is required to limit the charging
current of C1 to some value less than the LM2599 current
limit (typically 4.5A).
This method of generating a negative output voltage without
an additional inductor can be used with other members of
the Simple Switcher Family, using either the buck or boost
topology.
TYPICAL THROUGH HOLE PC BOARD LAYOUT, FIXED OUTPUT (1X SIZE), DOUBLE SIDED
DS012582-48
FIGURE 31. Charge Pump for Generating a
Low Current, Negative Output Voltage
DS012582-51
C
IN
:
C
OUT
:
D1:
L1:
R
PULL UP
:
C
DELAY
:
C
SD/SS
:
Thermalloy Heat Sink
#
7020
— 470 μF, 50V, Aluminum Electrolytic Panasonic, “HFQ Series”
— 330 μF, 35V, Aluminum Electrolytic Panasonic, “HFQ Series”
— 5A, 40V Schottky Rectifier, 1N5825
— 47 μH, L39, Renco, Through Hole
— 10k
— 0.1 μF
— 0.1 μF
L
www.national.com
28
相關(guān)PDF資料 |
PDF描述 |
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| LM2599S-ADJ | SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator, with Features |
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| LM2599S-5.0 | SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator, with Features |
| LM2599T-12 | SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator, with Features |
| LM2599T-3.3 | SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator, with Features |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2599S-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 |
| LM2599S-5.0/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 |
| LM2599S-5.0P+ | 制造商:Texas Instruments 功能描述:7.5 A SWITCHING REGULATOR, 173 KHZ SWITCHING FREQ-MAX, PSSO7, TO-263, 7 PIN |
| LM2599SADJ | 制造商:National Semiconductor 功能描述:Conv DC-DC Single Step Down 4.5V to 40V 8-Pin(7+Tab) TO-263 T/R |
| LM2599S-ADJ | 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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