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參數(shù)資料
| 型號(hào)： | FDG901D |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | MOSFETs |
| 英文描述： | 20 AMP MINIATURE POWER RELAY |
| 中文描述： | BUF OR INV BASED MOSFET DRIVER, PDSO5 |
| 封裝： | SC-70, 5 PIN |
| 文件頁數(shù)： | 4/6頁 |
| 文件大?。?/td> | 205K |
| 代理商： | FDG901D |
FDG901D rev. D (W)
Typical Application
Battery powered systems make extensive usage of load switching, turning the power to
subsystems off, in order to extend battery life. Power MOSFETs are used to accomplish this
task. In PDA’s and Cell phones, these MOSFETs are usually low threshold P-Channels. Since
the loads typically include bypass capacitor components (high capacitive component), a high
inrush current can occur when the load is switched on. This inrush current can cause transients
on the main power supply disturbing circuitry supplied by it.
The simplest method of limiting the inrush current is to control the slew rate of the MOSFET
switch. This can be done with external R/C circuits, but this approach can occupy significant PCB
area, and involves other compromises in performance. The slew rate control driver IC FDG901D
is specifically designed to interface low voltage digital circuitry with power MOSFETs and reduce
the rapid inrush current in load switch applications. The IC limits inrush current by controlling the
current, which drives the gate of the P-Channel MOSFET switch.
The control input is a CMOS compatible input with a minimum high input voltage of 2.55V with a
power rail voltage of 6V. Therefore, it is compatible with any CMOS logic voltages between
2.55V and 5V and under these conditions there is no additional configuration required.
Load
Ig
Application Circuit
1
3
5
4
2
Slew Rate
Control
Logic
Signal
I
Source
Gate
Drain
VDD
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FDG901D_Q | 功能描述:電源開關(guān) IC - 配電 Control Driver IC P-Ch Slew Rate RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時(shí)間（最大值）:400 us 關(guān)閉時(shí)間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| FDG910D | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FDG-E1-D01-0S | 制造商:Fraen Corporation 功能描述:FDG Series Lenses For OSRAM Golden Dragontm LEDs |
| FDG-E1-D01-HS | 制造商:Fraen Corporation 功能描述:FDG Series Lenses For OSRAM Golden Dragontm LEDs |
| FDG-M1-D01-HS | 制造商:Fraen Corporation 功能描述:FDG Series Lenses For OSRAM Golden Dragontm LEDs |
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