Sunnyvale, Calif.Maxim Integrated Products is calling its DS2788 the industry's smallest stand-alone fuel gauge to integrate LED drivers and a pushbutton input for multiple Li+ cells into a single IC.
Designed for the tight space of a battery pack, it is packaged in a lead-free 14-pin TSSOP. The DS2788 is intended for displaying the remaining battery capacity of power tools, ebikes, portable household appliances, and ultra-mobile PCs.
The DS2788 reports a battery pack's remaining capacity in both "mAh remaining" and "percentage of full" to the host system, and it displays the results using either four or all five of its integrated LED driver outputs. Capable of directly sinking current, each LED driver pin requires only a single resistor to set its current in the LED display, thus reducing board space and system cost. A programmable I/O pin that can be configured as a debounced-pushbutton input enables the LED display.
Prices start at $2.72 (1000-up, FOB USA).
Maxim Integrated Products, www.maxim-ic.com