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參數資料
| 型號： | LM3224 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 615kHz/1.25MHz Step-up PWM DC/DC Converter |
| 中文描述： | 615kHz/1.25MHz升壓PWM直流/直流轉換器 |
| 文件頁數： | 1/18頁 |
| 文件大小： | 920K |
| 代理商： | LM3224 |
LM3224
615kHz/1.25MHz Step-up PWM DC/DC Converter
General Description
The LM3224 is a step-up DC/DC converter with a 0.15
(typ.), 2.45A (typ.) internal switch and pin selectable operat-
ing frequency. With the ability to convert 3.3V to multiple
outputs of 8V, -8V, and 23V, the LM3224 is an ideal part for
biasing TFT displays. With the high current switch it is also
ideal for driving high current white LEDs for flash applica-
tions. The LM3224 can be operated at switching frequencies
of 615kHz and 1.25MHz allowing for easy filtering and low
noise. An external compensation pin gives the user flexibility
in setting frequency compensation, which makes possible
the use of small, low ESR ceramic capacitors at the output.
An external soft-start pin allows the user to control the
amount of inrush current during start up. The LM3224 is
available in a low profile 8-lead MSOP package.
Features
n
Operating voltage range of 2.7V to 7V
n
615kHz/1.25MHz pin selectable frequency operation
n
Over temperature protection
n
Optional soft-start function
n
8-Lead MSOP package
Applications
n
TFT Bias Supplies
n
Handheld Devices
n
Portable Applications
n
GSM/CDMA Phones
n
Digital Cameras
n
White LED Flash/Torch Applications
Typical Application Circuit
20097631
December 2004
L
2004 National Semiconductor Corporation
DS200976
www.national.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM3224_05 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:615kHz/1.25MHz Step-up PWM DC/DC Converter |
| LM3224MM-ADJ | 制造商:Texas Instruments 功能描述:Conv DC-DC Single Step Up 2.7V to 7V 8-Pin VSSOP T/R 制造商:Texas Instruments 功能描述:BOOST CONVERTER, POWERWISE, 3224, MSOP8 制造商:National Semiconductor Corporation 功能描述:DC-DC Boost Converter,LM3224MM-ADJ 制造商:Texas Instruments 功能描述:DC-DC Boost Converter,LM3224MM-ADJ |
| LM3224MM-ADJ/NOPB | 功能描述:DC/DC 開關控制器 STEP-UP PWM DC/DC CONVERTER RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| LM3224MM-ADJEV | 功能描述:電源管理IC開發工具 LM3224 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM3224MM-ADJEV/NOPB | 功能描述:電源管理IC開發工具 LM3224 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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