- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384605 > LP3954TLX (NATIONAL SEMICONDUCTOR CORP) Advanced Lighting Management Unit PDF資料下載
參數(shù)資料
| 型號： | LP3954TLX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | Advanced Lighting Management Unit |
| 中文描述： | LED DISPLAY DRIVER, PBGA36 |
| 封裝： | 3 X 3 MM, 0.60 MM HEIGHT, 0.50 MM PITCH, MICRO, SMD-36 |
| 文件頁數(shù)： | 7/56頁 |
| 文件大?。?/td> | 5801K |
| 代理商： | LP3954TLX |
第1頁第2頁第3頁第4頁第5頁第6頁當(dāng)前第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁
Modes of Operation
RESET:
In the RESET mode all the internal registers are reset to the default values and the chip goes to STANDBY
mode after reset. NSTBY control bit is low after reset by default. Reset is entered always if Reset Register
is written or internal Power On Reset is active. There is no dedicated Reset pin available. LP3954 can be
reset by writing any data to Reset Register in address 60H. Power On Reset (POR) will activate during the
chip startup or when the supply voltage VDD2 falls below 1.5V. Once VDD2 rises above 1.5V, POR will
inactivate and the chip will continue to the STANDBY mode.
The STANDBY mode is entered if the register bit NSTBY is LOW. This is the low power consumption mode,
when all circuit functions are disabled. Registers can be written in this mode and the control bits are effective
immediately after power up.
When NSTBY bit is written high, the INTERNAL STARTUP SEQUENCE powers up all the needed internal
blocks (Vref, Bias, Oscillator etc..). To ensure the correct oscillator initialization, a 10ms delay is generated
by the internal state-machine. If the chip temperature rises too high, the Thermal Shutdown (THSD) disables
the chip operation and STARTUP mode is entered until no thermal shutdown event is present.
BOOST STARTUP:
Soft start for boost output is generated in the BOOST STARTUP mode. The boost output is raised in PFM
mode during the 10ms delay generated by the state-machine. The Boost startup is entered from Internal
Startup Sequence if EN_BOOST is HIGH or from Normal mode when EN_BOOST is written HIGH. During
the 10ms Boost Startup time all LED outputs are switched off to ensure smooth start-up.
NORMAL:
During NORMAL mode the user controls the chip using the Control Registers. The registers can be written
in any sequence and any number of bits can be altered in a register in one write
STANDBY:
STARTUP:
20132207
7
www.national.com
L
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP3958 | Lighting Management Unit with High Voltage Boost Converter |
| 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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3954TLX/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 |
| LP3958 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Lighting Management Unit with High Voltage Boost Converter |
| 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。