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參數(shù)資料
| 型號： | LP3958 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Lighting Management Unit with High Voltage Boost Converter |
| 中文描述： | 照明管理股高電壓升壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/28頁 |
| 文件大?。?/td> | 1091K |
| 代理商： | LP3958 |
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LP3958
Lighting Management Unit with High Voltage Boost
Converter
General Description
LP3958 is a Lighting Management Unit for portable applica-
tions. It is used to drive display backlight and keypad LEDs.
The device can drive 5 separately connected strings of LEDs
with high voltage boost converter.
The keypad LED driver allows driving LEDs from high volt-
age boost converter or separate supply voltage.The MAIN
and SUB outputs are high resolution current mode drivers.
Keypad LED outputs can be used in switch mode and cur-
rent mode. External PWM control can be used for any se-
lected outputs.
The device is controlled through 2-wire low voltage I
2
C
compatible interface that reduces the number of required
connections.
LP3958 is offered in a tiny 25-bump micro-SMD package.
Features
n
High efficiency boost converter with programmable
output voltage
n
2 individual drivers for serial display backlight LEDs
n
3 drivers for serial keypad LEDs
n
Automatic dimming controller
n
Stand alone serial keypad LEDs controller
n
3 general purpose IO pins
n
25-bump micro SMD Package: (2.54mm x 2.54mm x
0.6mm)
Applications
n
Cellular Phones and PDAs
n
MP3 Players
n
Digital Cameras
Typical Application
20175570
February 2006
L
2006 National Semiconductor Corporation
DS201755
www.national.com
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PDF描述 |
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| LP3958TL | Lighting Management Unit with High Voltage Boost Converter |
| LP3958TLX | Lighting Management Unit with High Voltage Boost Converter |
| LP3971 | POWER MANAGEMENT UNIT FOR ADVANCED APPLICATION PROCESSORS |
| LP3971SQ-A514 | POWER MANAGEMENT UNIT FOR ADVANCED APPLICATION PROCESSORS |
| LP3971SQ-B410 | POWER MANAGEMENT UNIT FOR ADVANCED APPLICATION PROCESSORS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3958TL | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Lighting Management Unit with High Voltage Boost Converter |
| LP3958TL/NOPB | 功能描述:LED照明驅(qū)動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP3958TLX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Lighting Management Unit with High Voltage Boost Converter |
| LP3958TLX/NOPB | 功能描述:LED照明驅(qū)動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP395Z | 功能描述:兩極晶體管 - BJT RoHS:否 制造商:STMicroelectronics 配置: 晶體管極性:PNP 集電極—基極電壓 VCBO: 集電極—發(fā)射極最大電壓 VCEO:- 40 V 發(fā)射極 - 基極電壓 VEBO:- 6 V 集電極—射極飽和電壓: 最大直流電集電極電流: 增益帶寬產(chǎn)品fT: 直流集電極/Base Gain hfe Min:100 A 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PowerFLAT 2 x 2 |
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