Multi-chemistry charger for 1–3 cell packs
The Maxim Integrated MAX1501ETE+ is a multi-chemistry battery charger IC in a 16-TQFN (5x5) package, designed to charge 1 to 3 series cells with a programmable constant-current profile up to 1.4 A. It handles Li-ion, Li-Poly, NiMH, and NiCd chemistries from a single supply rail up to 6.25 V, with built-in overvoltage fault protection. This part suits portable instruments, handheld medical devices, and battery-backed industrial equipment where a single charger BOM must cover multiple pack types across the -40°C to 85°C operating range.
1.4 A programmable charge current — sizing the thermal budget
The 1.4 A maximum charge current is the key rating for BOM thermal planning. At full current, the 16-TQFN exposed pad must be soldered to a sufficient copper area on the PCB.
Overvoltage protection — one less external supervisor
The integrated overvoltage fault protection monitors the battery voltage and disables charging if the cell voltage exceeds the safe threshold. This eliminates the need for a separate battery-protection IC or external comparator for many designs, saving board space and BOM cost in space-constrained 16-TQFN layouts.
Active lifecycle — no LTB pressure for production builds
The MAX1501ETE+ carries an Active product status with ROHS3 compliance. No last-time-buy window is open, and no successor has been announced. For ongoing production, this part can be specified into new designs without near-term obsolescence risk.