LP3943 - RGB/白光/蓝光 16 LED 趣味闪烁光驱动器

LP3943是TI德州仪器公司的一款背光产品，LP3943是RGB/白光/蓝光 16 LED 趣味闪烁光驱动器，本站介绍了LP3943的封装应用图解、特点和优点、功能等，并给出了与LP3943相关的TI元器件型号供参考。

LP3943 - RGB/白光/蓝光 16 LED 趣味闪烁光驱动器 - 背光 - LED驱动器 - 德州仪器

产品特性

Internal Power-On Reset
Active Low Reset
Internal Precision Oscillator
Variable Dim Rates (From 6.25 ms to 1.6 s; 160 Hz to 0.625 Hz)
16 LED Drivers (Multiple Programmable States: ON, OFF, Input, and Dimming at a Specified Rate)
16 Open-Drain Outputs Capable of Driving up to 25 mA per LED

产品应用

Customized Flashing LED Lights for Cellular Phones
Portable Applications
Digital Cameras
Indicator Lamps
General Purpose I/O Expander
Toys

产品说明

The LP3943 is an integrated device capable of independently driving 16 LEDs. This device also contains an internal precision oscillator that provides all the necessary timing required for driving each LED. Two prescaler registers, along with two PWM registers, provide a versatile duty-cycle control. The LP3943 contains the ability to dim LEDs in SMBUS/I2C applications where it is required, to cut down on bus traffic.

Traditionally, dimming LEDs using a serial shift register such as 74LS594/5 requires a large amount of traffic on the serial bus. The LP3943 instead requires only the setup of the frequency and duty cycle for each output pin; from then on, only a single command from the host is required to turn each individual open drain output to an ON or OFF state, or to cycle a programmed frequency and duty cycle. Maximum output sink current is 25 mA per pin and 200 mA per package. Any ports not used for controlling the LEDs can be used for general purpose input/output expansion.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LP3943	WQFN (24)	4.00 mm × 4.00 mm

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