Li-Ion Power Gauge?⠍odule

The BQ2150 Power Gauge Module provides a complete and compact solution for capacity monitoring of Li-Ion battery packs. Designed for battery pack integration, the BQ2150 incorporates a BQ2050 Gas Gauge IC, a Current Sense re- sistor, and all other components necessary to accurately monitor and Display the capacity of 2 to 4 series cells. The bq2150L includes five LEDs to Display remaining ca- pacity in 20% increments of the learned capacity. The LEDs are activated with the onboard push-button Switch Contacts are provided on the BQ2150 for direct connec- tion to the battery stack (BAT+, BAT-) and the serial Communications port (DQ). The RBI input provides backup power to the BQ2050 in the event that the cells are removed or the battery is turned off. The BQ2150 hasa1F capacitor onboard connected to RBI to supply backup power for about an hour. In battery packs that use high-side FETs to control the charge/discharge of the Li-Ion cells, the RBI input CAN be wired to a single cell to provide prolonged data retention times. The SD input allows an external signal (active low) to turn the BQ2050 IC off to minimize internal current consumption of the battery pack and maximize storage life of the pack in the system. When turned off, the BQ2050 is non- functional, and the RBI power source maintains Register information. Please refer to the BQ2050 data sheet for the specifics on the operation of the gas gauge. Unitrode configures the BQ2150 based on the informa- tion requested in Table 1. The configuration defines the number of series cells, the nominal battery pack capac- ity, and the Li-Ion battery type (coke or graphite anode). Figure 1 shows how the module connects to the cells By Texas Instruments
Part Manufacturer Description Datasheet Samples
BQ2150MODULE Texas Instruments BQ2150 Gas gauge module with LEDs and switch (L-version), BQ2050 based
BQ2150LMODULE Texas Instruments BQ2150 Gas gauge module with LEDs and switch (L-version), BQ2050 based
BQ2150 's PackagesBQ2150 's pdf datasheet

BQ2150 Pinout, Pinouts
BQ2150 pinout,Pin out
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