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车规 ET6037
General Description
ET6037 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.
ET6037 uses the I2C BUS structure, it can adjust arbitrary channel’s current by the code set.
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
18 constant-current output channels
Constant output current invariant to load voltage change
Excellent output current accuracy
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:2~45mA @VDD=5V ,2~30mA @VDD=3.3V
I2C interface, four chip-address can be set
RGB LED brightness adjustment function of any color
Soft shutdown, shutdown current is less than 5uA@VDD=5V, 3uA@VDD=3.3V
Supply voltage：2.7V～5.5V (TYP.)
Package: QFN24(4mm ×4mm) ,SSOP24
Pin Configuration
Block Diagram
Application Circuits
