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參數資料
| 型號： | LP39542 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Zener Diode; Application: Low noise; Pd (mW): 250; Vz (V): 4.3 to 4.7; Condition Iz at Vz (mA): 0.5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: LLD |
| 中文描述： | 高級照明管理單位 |
| 文件頁數： | 1/58頁 |
| 文件大小： | 2547K |
| 代理商： | LP39542 |
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August 2007
LP39542
Advanced Lighting Management Unit
General Description
LP39542 is an advanced lighting management unit for hand-
held devices. It drives any phone lights including display
backlights, RGB, keypad and camera flash LEDs. The boost
DC-DC converter drives high current loads with high efficien-
cy. White LED backlight drivers are high efficiency low voltage
structures with excellent matching and automatic fade in/ fade
out function. The stand-alone command based RGB con-
troller is feature rich and easy to configure. Built-in audio
synchronization feature allows user to synchronize the color
LEDs to audio input. Integrated high current driver can drive
camera flash LED or motor/vibra. Internal ADC can be used
for ambient light or temperature sensing. The flexible I
2
C in-
terface allows easy control of LP39542. Small micro SMD
package together with minimum number of external compo-
nents is a best fit for handheld devices.
Features
■
Audio synchronization for color/RGB LEDs
■
Command based PWM controlled RGB LED drivers
■
Programmable ON/OFF blinking sequences for RGB LED
■
High current driver for flash LED with built-in timing and
safety feature.
■
4+2 or 6 low voltage constant current white LED drivers
with programmable 8-bit adjustment (0...25 mA/LED)
■
High efficiency Boost DC-DC converter
■
I
2
C compatible interface
■
Possibility for external PWM dimming control
■
Possibility for clock synchronization for RGB timing
■
Ambient light and temperature sensing possibility
■
Small package – microSMD-36, 3.0 x 3.0 x 0.6 mm
Applications
■
Cellular Phones
■
PDAs, MP3 players
Typical Applications
30008560
2007 National Semiconductor Corporation
300085
www.national.com
L
相關PDF資料 |
PDF描述 |
|---|---|
| LP39542RL | Zener Diode; Application: Low noise; Pd (mW): 250; Vz (V): 4.6 to 5.0; Condition Iz at Vz (mA): 0.5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: LLD |
| LP39542RLX | Zener Diode; Application: Low noise; Pd (mW): 250; Vz (V): 4.9 to 5.3; Condition Iz at Vz (mA): 0.5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: LLD |
| LP39542TL | Advanced Lighting Management Unit |
| LP39542TLX | Advanced Lighting Management Unit |
| LP3954 | Advanced Lighting Management Unit |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LP39542RL | 制造商:Texas Instruments 功能描述:IC, LIGHTING MGNT UNIT, SMD |
| LP39542RL/NOPB | 功能描述:LED照明驅動器 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: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP39542RLX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Advanced Lighting Management Unit |
| LP39542RLX/NOPB | 功能描述:LED照明驅動器 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: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP39542TL | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Advanced Lighting Management Unit |
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