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參數資料
| 型號： | LP3936 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Lighting Management System for Six White LEDs and One RGB or FLASH LED |
| 中文描述： | 照明管理系統6個白光LED和一個RGB或閃光燈LED |
| 文件頁數： | 1/20頁 |
| 文件大小： | 520K |
| 代理商： | LP3936 |
LP3936
Lighting Management System for Six White LEDs and
One RGB or FLASH LED
General Description
LP3936 is a complete lighting management system de-
signed for portable wireless applications. It contains a boost
DC/DC converter, 4 white LED drivers to drive the main LCD
panel backlight, 2 white LED drivers for sub-LCD panel and
1 set of RGB LED drivers.
Both WLED groups have 8-bit programmable constant cur-
rent drivers that are separately adjustable and matched to
1% (typ.). For efficient backlighting the backlight intensity
can be adjusted using the 8-bit ADC with ambient light
detection circuit.
The RGB LED drivers are PWM-driven with programmable
color, intensity and blinking patterns. In addition, they feature
a FLASH function to support picture taking with camera-
enabled cellular phones.
An efficient magnetic boost converter provides the required
bias operating from a single Li-Ion battery. The DC/DC con-
verter output voltage is user programmable for adapting to
different LED types and for efficiency optimization. All func-
tions
are
software
controllable
through
an
I
2
C
and
MicroWire/SPI compatible interface and 16 internal regis-
ters.
Features
n
High Efficiency 250 mA Magnetic Boost DC-DC
Converter with Programmable Output Voltage
n
PWM controlled RGB LED drivers with programmable
color, brightness, turn on/off slopes and blinking
n
FLASH function with 3 drivers, each up to 120 mA
current
n
4 constant current White LED drivers with
programmable 8-bit adjustment (0 … 25 mA/LED)
n
2 constant current White LED drivers with
programmable 8-bit adjustment (0 … 25 mA/LED)
n
8-bit ADC for ambient light sensor with averaging
n
Combined MicroWire/SPI and I
2
C compatible serial
interface
n
Low current Standby mode (software controlled)
n
Low voltage digital interface down to 1.8V
n
Space efficient 32-pin thin CSP laminate package
Applications
n
Cellular Phones
n
PDAs
Typical Application
20081401
June 2004
L
2004 National Semiconductor Corporation
DS200814
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LP3936SL | Lighting Management System for Six White LEDs and One RGB or FLASH LED |
| LP3936SLX | Lighting Management System for Six White LEDs and One RGB or FLASH LED |
| LP3939 | Power Amplifier Driver For Dual Band CDMA Handsets |
| LP3939ILQ | Power Amplifier Driver For Dual Band CDMA Handsets |
| LP3939ILQX | Power Amplifier Driver For Dual Band CDMA Handsets |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LP3936SL | 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 |
| LP3936SL/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 |
| LP3936SLX | 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 |
| LP3936SLX/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 |
| LP3937ILQ-AL | 制造商:Texas Instruments 功能描述:Electronic Component |
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