LM2755 Overview
The LM2755 is a charge-pump-based, constant current LED driver capable of driving 3 LEDs with a total output current up to 90mA. The diode current waveforms of each LED can be trapezoidal with timing and level parameters (rise time, fall time, high level, low level, delay, high time, low time) programmed via an I2C-patible interface. The 32 brightness levels found on the LM2755 are exponentially spaced (as opposed...
LM2755 Key Features
- 2 90% Peak Efficiency
- Total solution size < 13mm2
- No Inductor Required: Only 4 Inexpensive
- 3 Independently Controlled Constant Current
- Programmable Trapezoidal Dimming
- Programmable Timing Control Via Internal
- 32 Exponential Dimming Steps with 800:1 Dimming Ratio
- Programmable Brightness Control via I2Cpatible Interface
- Hardware Enable Pin
- Wide Input Voltage Range: 2.7V to 5.5V
