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參數(shù)資料
| 型號(hào)： | LM2717 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Dual Step-down DC/DC Converter |
| 中文描述： | 雙降壓直流/直流轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大小： | 673K |
| 代理商： | LM2717 |
LM2717
Dual Step-down DC/DC Converter
General Description
The LM2717 is composed of two PWM DC/DC buck (step-
down) converters. The first converter is used to generate a
fixed output voltage of 3.3V. The second converter is used to
generate an adjustable output voltage. Both converters fea-
ture low R
(0.16
) internal switches for maximum effi-
ciency. Operating frequency can be adjusted anywhere be-
tween 300kHz and 600kHz allowing the use of small external
components. External soft-start pins for each enables the
user to tailor the soft-start times to a specific application.
Each converter may also be shut down independently with
its own shutdown pin. The LM2717 is available in a low
profile 24-lead TSSOP package ensuring a low profile over-
all solution.
Features
n
Fixed 3.3V output buck converter with a 2.2A, 0.16
,
internal switch
n
Adjustable buck converter with a 3.2A, 0.16
, internal
switch
n
Operating input voltage range of 4V to 20V
n
Input undervoltage protection
n
300kHz to 600kHz pin adjustable operating frequency
n
Over temperature protection
n
Small 24-Lead TSSOP package
Applications
n
TFT-LCD Displays
n
Handheld Devices
n
Portable Applications
n
Laptop Computers
Typical Application Circuit
20078501
PRELIMINARY
May 2005
L
2005 National Semiconductor Corporation
DS200785
www.national.com
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| LM2717MT | Dual Step-down DC/DC Converter |
| LM2717MTX | Dual Step-down DC/DC Converter |
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| LM2731XMFX | 0.6/1.6 MHz Boost Converters With 22V Internal FET Switch in SOT-23 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2717_08 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual Step-Down DC/DC Converter |
| LM2717-ADJ | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual Step-Down DC/DC Converter |
| LM2717-ADJ_08 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual Step-Down DC/DC Converter |
| LM2717MT | 功能描述:DC/DC 開(kāi)關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| LM2717MT/NOPB | 功能描述:DC/DC 開(kāi)關(guān)控制器 DUAL STEP-DOWN DC/DC CONVERTER RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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