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參數資料
| 型號： | LM2599T-5.0 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 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, PZFM7 |
| 封裝： | TO-220, 7 PIN |
| 文件頁數： | 26/31頁 |
| 文件大小： | 812K |
| 代理商： | LM2599T-5.0 |
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Application Information
(Continued)
lNVERTING REGULATOR
The circuit in Figure 26 converts a positive input voltage to a
negative output voltage with a common ground. The circuit
operates by bootstrapping the regulator’s ground pin to the
negative output voltage, then grounding the feedback pin,
the regulator senses the inverted output voltage and regu-
lates it.
This example uses the LM2599-5 to generate a 5V output,
but other output voltages are possible by selecting other out-
put voltage versions, including the adjustable version. Since
this regulator topology can produce an output voltage that is
either greater than or less than the input voltage, the maxi-
mum output current greatly depends on both the input and
output voltage. The curve shown in Figure 27 provides a
guide as to the amount of output load current possible for the
different input and output voltage conditions.
The maximum voltage appearing across the regulator is the
absolute sum of the input and output voltage, and this must
be limited to a maximum of 40V. In this example, when con-
verting +20V to 5V, the regulator would see 25V between
the input pin and ground pin. The LM2599 has a maximum
input voltage rating of 40V.
DS012582-42
FIGURE 25. Typical Circuit Using Shutdown /Soft-start and Error Flag Features
DS012582-43
FIGURE 26. Inverting 5V Regulator With Shutdown and Soft-start
L
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相關PDF資料 |
PDF描述 |
|---|---|
| LM2599T-ADJ | SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator, with Features |
| LM2619MTC | 500mA Step-Down DC-DC Converter |
| LM2619MTCX | 500mA Step-Down DC-DC Converter |
| LM2621MM | Low Input Voltage, Step-Up DC-DC Converter |
| LM2621 | |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM2599T50 | 制造商:Texas Instruments 功能描述:SWITCHING REG 3A 5.0V 2599 TO-220 |
| LM2599T-ADJ | 功能描述:直流/直流開關轉換器 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 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| LM2599T-ADJ | 制造商:Texas Instruments 功能描述:SWITCHING REG 3A ADJ 2599 TO2207 |
| LM2599T-ADJ/NOPB | 功能描述:直流/直流開關轉換器 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 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| LM26 | 制造商:Psiber Data Systems 功能描述:LanMaster 26 Pro Link Tester and Accesory Kit |
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