12 채널 LED 드라이버 -LED1202
(LED DRIVER 19 CLICK)
개요
- 본 제품은 12 채널 LED 드라이버 -LED1202 입니다.
- LED1202 칩을 기반으로 디자인되었으며 5V 전압을 출력하고 각각의 채널에 최대 20mA까지 공급이 가능한 제품입니다.
- 각 채널은 4096 PWM 스텝 조절이 가능합니다.
특징
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HOW DOES IT WORK?
LED Driver 19 Click is based on the LED1202, a 12-channel low quiescent current LED driver from STMicroelectronics. Its internal non-volatile memory can store up to 8 different patterns, each with a particular output configuration, thus enabling automatic sequencing without MCU intervention. Each channel has an output PWM dimming frequency of 220Hz in a 12-bit resolution. Analog dimming range is from 1 up to 20mA, in 256 steps per channel, and common to all patterns. In addition, using one of the PWM or analog modes, you can use both of them to achieve full control of LED brightness. This LED driver also features a built-in open LED detection and thermal shutdown function that turns OFF all output drivers during an over-temperature condition.
The LED Driver 19 Click uses a standard I2C 2-Wire interface to communicate with the host MCU. The I2C address can be selected via two ADDR SEL jumpers, where 0 is selected by default on both. The LED1202 driver can generate an interrupt on the INT pin if a fault or condition occurs; by that, it means an open LED, overtemperature, pattern end, and frame start. The INT pin informs the system about those statuses with active LOW.
This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.
SPECIFICATIONS
Type LED Drivers Applications Can be used for color mixing and backlight application for amusement products, LED status signalization, home automation projects, and more On-board modules LED1202 - 12-channel low quiescent current LED driver from STMicroelectronics Key Features 12 individual LED channels, 12-bit PWM control, 8-bit analog control, thermal shutdown protection, low power consumption, 8 programmable pattern sequences in non-volatile memory, fault flag pin, high efficiency and performance, and more Interface I2C Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V or 5V