LM2793LDEV [Texas Instruments]

The LM2793 is a highly efficient, semi-regulated 1.5x CMOS charge pump that provides dual constant current outputs for driving white LEDs. It features an input voltage range of 2.7V to 5.5V, dual regulated current outputs up to 16mA each with ±0.3% matching, and dual-function brightness control via analog voltage or PWM signal. Pre-regulation minimizes input noise, and the fixed 500kHz switching frequency ensures low-noise operation. The device includes soft-start for inrush current limiting and consumes only 3µA in shutdown mode. It is available in a compact LLP-10 package (3.0mm x 3.0mm x 0.8mm), requiring no inductors for a small solution size.