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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)： | 13/36頁 |
| 文件大?。?/td> | 498K |
| 代理商： | LT3581IMSE#TRPBF |
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LT3581
0
3581f
applicaTions inForMaTion
The slave switch, by not performing a current sense
operation like the master switch, can sustain fairly large
current spikes when the flying capacitors charge up.
Since this current spike flows through SW2, it does
not affect the operation of the current comparator (A4
in Block Diagram).
The master switch, immune from the capacitor current
spike (seen only by the slave switch) can sense the
inductor current more accurately.
Since the slave switch can sustain large current spikes,
the diodes that feed current into the flying capacitors do
not need current limiting resistors, leading to efficiency
and thermal improvements.
High VOUT Charge Pump Topology
The LT3581 can be used in a charge-pump topology as
shown in Figure 12, multiplying the output of an inductive
boost converter. The master switch (SW1) can be used to
drive the inductive boost converter (first stage of charge
pump), while the slave switch (SW2) can be used to drive
one or more other charge pump stages. This topology is
useful for high voltage applications including VFD bias
supplies.
Single Inductor Inverting Topology
If there is a need to use just one inductor to generate a
negative output voltage whose magnitude is greater than
VIN,thesingleinductorinvertingtopology(showninFigure
13) can be used. Since the master and slave switches are
isolated by a Schottky diode, the current spike through C1
will flow only through the slave switch, thereby preventing
the current comparator, (A4 in the Block Diagram), from
falsely tripping. Output disconnect is inherently built into
the single inductor topology.
VIN
12V
VOUT2
97V
140mA
VOUT1
65V
70mA
24k
2.2F
10H
2.2F
0.47F
43.2k
100pF
1nF
100k
2.2F
370k
SW1 SW2
FB
VC
SS
GND
SYNC
GATE
CLKOUT
VIN
RT
FAULT
SHDN
LT3581
3581 F12
8.06k
2.2F
Figure 12. High VOUT Charge Pump Topology Can Be Used to
Build VFD Bias Supplies
ENABLE
CVC2
VIN
COUT
VOUT < 0V
AND |VOUT| > |VIN|
SW1
SW2
GATE
FB
VC
SS
GND
SYNC
CLKOUT
VIN
RT
FAULT
SHDN
LT3581
100k
L1
D1
D2
D3
C1
RFB
CVC1
CSS
CIN
RVC
RT
3579 F13
Figure 13. Single Inductor Inverting Topology
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(shù)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(chǎn)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(diào)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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