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參數(shù)資料
| 型號： | LT3581IMSE#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PDSO16 |
| 封裝： | LEAD FREE, PLASTIC, MSOP-16 |
| 文件頁數(shù)： | 14/36頁 |
| 文件大?。?/td> | 498K |
| 代理商： | LT3581IMSE#TRPBF |
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LT3581
3581f
VOUT
10V/DIV
SS
1V/DIV
IL
5A/DIV
VIN
5V/DIV
3581 F14
1s/DIV
applicaTions inForMaTion
Figure 14. Inrush Current Is Well Controlled in Spite Of Hot-
Plugging the Re-configured Boost Converter in Figure 18
HOT-PLUG
The high inrush current associated with hot-plugging VIN
can be largely rejected with the use of an external PMOS. A
simple hot-plug controller can be designed by connecting
an external PMOS in series with VIN, with the gate of the
PMOS being driven by the GATE pin of the LT3581. Since
the GATE pin pull-down current is linearly proportional to
theSSvoltage,andtheSSchargeuptimeisrelativelyslow,
the GATE pin pull-down current will increase gradually,
thereby turning on the external PMOS slowly. Controlled
in this manner, the PMOS acts as an input current limiter
when VIN hot-plugs or ramps up sharply.
Likewise, when the PMOS is connected in series with the
output, inrush currents into the output capacitor can be
limitedduringahot-plugevent.Toillustratethis,thecircuit
in Figure 18 was re-configured by adding a large 1500F
capacitor to the output. An 18Ω resistive load was used
and a 2.2F capacitor was placed on SS. Figure 14 shows
theresultsofhot-pluggingthisre-configuredcircuit.Notice
how the inductor current is well behaved.
相關PDF資料 |
PDF描述 |
|---|---|
| LT3581IMSE#PBF | SWITCHING REGULATOR, PDSO16 |
| LT3581IDE#PBF | SWITCHING REGULATOR, PDSO14 |
| LT3682IDD#TRPBF | SWITCHING REGULATOR, PDSO12 |
| LT3682EDD#TRPBF | SWITCHING REGULATOR, PDSO12 |
| LT3682EDD#PBF | SWITCHING REGULATOR, PDSO12 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LT3582 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:I2C Programmable Boost and Single Inductor Inverting DC/DC Converters with OTP |
| LT3582-12 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:I2C Programmable Boost and Single Inductor Inverting DC/DC Converters with OTP |
| LT3582-5 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:I2C Programmable Boost and Single Inductor Inverting DC/DC Converters with OTP |
| LT3582EUD#PBF | 功能描述:IC REG BOOST INV ADJ DL 16QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關:2MHz 電流 - 輸出:500mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 包裝:帶卷 (TR) 供應商設備封裝:6-SON（1.45x1） 產品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LT3582EUD#TRPBF | 功能描述:IC REG BOOST INV ADJ DL 16QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關:600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應商設備封裝:8-SOIC |
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