MAX1737 is a switch-mode lithium-ion (Li+) battery charger that charges one to four cells. It provides a regulated charging current and a regulated voltage with only a ±0.8% total voltage error at the battery ter- minals.
The MAX1737 is a stand‑alone switch‑mode lithium‑ion battery‑charger controller that can charge one to four cells. It provides regulated voltage and current with high efficiency and includes safety features such as a timer and input‑current limiting. The device is offered in a compact 28‑pin QSOP package and is intended for applications like Li+ battery packs, desktop cradle chargers, notebook computers, and hand‑held instruments.
Key sections of the datasheet include a general description, absolute maximum ratings, detailed electrical characteristics, pin descriptions, and package dimensions. The document also lists typical operating characteristics, efficiency data, and recommended external components for stable operation.
| DCIN Input Voltage Range | 6 V – 28 V |
|---|---|
| Reference Voltage (REF) | 4.20 V |
| Conversion Efficiency | 90 % |
| Package Type | 28‑Pin QSOP |
The MAX1737 accepts a DCIN input voltage from 6 V to 28 V.
It can charge up to four lithium‑ion cells in a stand‑alone configuration.
The device achieves about 90 % conversion efficiency.
The MAX1737 is supplied in a 28‑pin QSOP package.