Single-cell fuel gauge with I²C readout
The Maxim Integrated DS2782G+ is a single-cell battery monitor for Lithium Ion/Polymer packs, communicating over an I²C interface. It tracks voltage, current, and temperature to report remaining capacity — the basic fuel-gauge function for a portable design that needs a gauge without a full smart-battery SMBus stack. The part is specified over -20°C to 70°C ambient, which covers handheld consumer gear, medical disposables, and indoor IoT nodes but not automotive cabin or industrial enclosures.
10-TDFN with exposed pad — layout consideration
Housed in a 10-WFDFN exposed-pad package (3x4 mm body, supplier code 10-TDFN), the DS2782G+ takes minimal board area. The exposed paddle must be soldered to a PCB thermal land and stitched with vias to a ground plane — without that, the junction temperature rises quickly under continuous measurement. The tube shipping medium means pick-and-place feeders need a tube-to-tape conversion or a tray adapter; verify with your CM for high-volume assembly.
Active, ROHS3 — no near-term LTB risk
Marked Active on the lifecycle record with ROHS3 compliance. No NRND flag, no last-time-buy notice on file. For a BOM line that needs a single-cell fuel gauge with I²C, this part is safe to qualify into a new production build without worrying about a surprise EOL within the next product generation. ROHS3 covers the current exemption sunset schedule — no recertification needed through 2026 at least.
Sourcing posture
This is a current-production Maxim (now Analog Devices) part, available through franchised and independent channels. No stock promise here, but the Active status means the factory pipeline is open; lead times typically run a few weeks out of Asia for tube quantities. If you need a quick spot check on where this sits in the cycle, send the RFQ.