흰색 LED 드라이버 -MP3309C, I2C
(LED DRIVER 15 CLICK)
개요
- 본 제품은 흰색 LED 드라이버 -MP3309C, I2C입니다.
- 부스트 흰색 LED 드라이버 MP3309C칩을 기반으로 디자인된 제품입니다.
- 직렬로 연결결된 흰색 LED를 최대 8개까지 지원합니다.
- 프로그래밍 가능한 switching freqency, 아날로그 및 PWM 디밍을 지원합니다.
특징
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HOW DOES IT WORK?
LED Driver 15 Click is based on the MP3309C, a white LED step-up converter from Monolithic Power Systems that uses peak current mode to regulate the current through the LED string using an external low-side resistor. The MP3309C offers high efficiency and features a programmable switching frequency to optimize efficiency. It delivers up to 40mA of LED current supporting up to 8 white LEDs in series connected to the LED terminal. The MP3309C also has integrated protection circuitry to guard against thermal overstress and electrical damage featuring LED open protection, cycle-by-cycle current limit protection, under-voltage protection (UVP), and thermal shutdown protection.
The MP3309C provides two dimming methods, PWM and analog dimming mode. It uses a PWM signal from the mikroBUS™ socket for PWM dimming. When the PWM signal is in a low logic state, the MP3309C stops switching and resumes Normal operation when the PWM signal is in a high logic state. Using a 100Hz to 2kHz PWM dimming frequency for most dimming ratio requests is recommended. The MP3309C set the LED current amplitude for analog dimming through the I2C interface. LED Driver 15 Click communicates with MCU using the standard I2C 2-Wire interface that supports Standard-Mode (100 kHz) and Fast-Mode (400 kHz) operation.
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 various amusement products, LED status signalization, home automation projects, and other applications On-board modules MP3309C - synchronous boost white LED driver from Monolithic Power Systems Key Features WLED driver, programmable switching frequency, digitally set LED current, I2C interface, analog and PWM dimming, high efficiency and performance, low power consumption, protection features, and more Interface I2C,PWM Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V or 5V