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LP3936 - 产品图解：
LP3936-用于六个白光 LED 和一个 RGB 或闪存 LED 的照明管理系统
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TI产品 - LP3936介绍

LP3936 - 用于六个白光 LED 和一个 RGB 或闪存 LED 的照明管理系统

LP3936是TI德州仪器公司的一款背光产品，LP3936是用于六个白光 LED 和一个 RGB 或闪存 LED 的照明管理系统，本站介绍了LP3936的封装应用图解、特点和优点、功能等，并给出了与LP3936相关的TI元器件型号供参考。

LP3936 - 用于六个白光 LED 和一个 RGB 或闪存 LED 的照明管理系统 - 背光 - LED驱动器 - 德州仪器

产品描述

LP3936 is a complete lighting management system designed 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 current 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 converter output voltage is user programmable for adapting to different LED types and for efficiency optimization. All functions are software controllable through an I2C and MicroWire/SPI compatible interface and 16 internal registers.

产品特性

  • High Efficiency 250 mA Magnetic Boost DC-DC Converter with Programmable Output Voltage
  • PWM controlled RGB LED drivers with programmable color, brightness, turn on/off slopes and blinking
  • FLASH function with 3 drivers, each up to 120 mA current
  • 4 constant current White LED drivers with programmable 8-bit adjustment (0 … 25 mA/LED)
  • 2 constant current White LED drivers with programmable 8-bit adjustment (0 … 25 mA/LED)
  • 8-bit ADC for ambient light sensor with averaging
  • Combined MicroWire/SPI and I2C compatible serial interface
  • Low current Standby mode (software controlled)
  • Low voltage digital interface down to 1.8V
  • Space efficient 32-pin TLGA laminate package

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