ET6037Y Etek
Microelectronics
玉石汗蒸18-bit Constant Current LED Sink Driver
General Description
ET6037Y is designed for LED displays with 128 steps linear current adjustable, built-in 18 independent low-resistance color LED driver channel, each can provide 2~45mA（register fixbrit_ledn data=52H）constant current. ET6037Y us the I2C BUS structure, it can adjust arbitrary channel’s current by the code t. The total 128 steps current’s range is 0%~190%. OUT0~OUT17, every three channel share one enable switch. The RGB LED’s brightness can be changed by controlling the enable switch signal.
Features
周而复始造句18 constant-current output channels
Constant output current invariant to load voltage change
Excellent output current accuracy:
Normal between channels: <±1.5% (typical); normal between ICs: <±3% (typical)
Output current adjusted through an external resistor
Each channel can be adjusted its current（scope：0%~190%, 128 steps, while register fixbrit_ledn data=52H current =100%）
Constant output current range:2～45 mA;(VDD=5V:2~45 mA; VDD=3.3V:2~30 mA )
I2C interface, four chip-address
RGB LED brightness adjustment function of any color
Soft shutdown, shutdown current is less than 5uA@5V, 3uA@3.3V
Supply voltage：2.7V～5.5V（TYP.）
Pin. Function
Functions Description
1. Serial Port Interface (I2C)
Bus Interface
Baband Processor can transmit data with ET6037Y each other through SDA and SCL port. SDA and SCL composite bus interface, and a pull-up resistor to the power supply should be connected.
Data Validity
全球人口排名When the SCL signal is HIGH, the data of SDA port is valid and stable. Only when the SCL signal is low, the level on the SDA port can be changed.
刻章证明Start (Re-start) and Stop Working Conditions
看的反义词是什么
When the SCL signal is high, SDA signal from high to low reprents start or re-start working conditions, while the SCL signal is high, SDA signal from low to high reprents stop working conditions.
中国乐曲Byte format
Each byte of data line contains 8 bits, which contains an acknowledge bit. The first data is transmitted MSB.
Acknowledge
During the writing mode, ET6037Y will nd a low level respon signal with one period width to the SDA port. During the reading mode, ET6037Y will not nd respon signal and the host will nd a high respon
MSB=Most Significant Bit
S=Start Conditions RS=Restart Conditions P=Stop Conditions
Fastest Transmission Speed =400KBITS/S
Restart: SDA-level turnover as expresd by the dashed line waveform
Chip-Address
2
描写生活的句子
Chip Addr=Chip Address=01000110b
ACK=Acknowledge
CMDADR= cmdadr（xxxxx + REG’s 3bit address） ACK Acknowledge
Command Reg data 1=（Command data cmd1） ACK= Acknowledge ……………
Command Reg data n=（Command data cmdn） ACK= Acknowledge
Stop
Note：(1) Set each LEDs’ fix brightness value(constant current) according to Table 3, and using the switch signal of table 2, we can adjust the brightness of the RGB, n:0 5, RGB LED configuration is shown in
application circuit figure.
梵蒂冈城
(2) If table 2 switch is always on, we also can adjust each LED’s brightness by changing the data of table3.
