Maxim Unveils MAX4880-MAX4884 Protection Controllers

Maxim Integrated Products Inc. (Sunnyvale, CA) unveiled its new over-voltage protection controllers, the MAX4880-MAX4884, which have an integrated battery disconnect switch with a current-limit range of 0.525 A to 1.1 A, depending on which part is used. The MAX4880-MAX4884 provide over-voltage protection to 28 V. Over-voltage trip levels range from 4.5 V to 5.6 V, and under-voltage trip levels range from 2.55 V to 4.35 V. Additional features include FLAG signals (over-voltage, over-current, and battery voltage trip) and an internal charge pump.

Also featured are thermal shutdown protection, 15 kV ESD protection, and a built-in startup delay that allows the adapter voltage to settle down before turning on the external MOSFET. The integration of the current-limit switch in a 3 mm x 3 mm TDFN package reduces both overall external system component count and necessary board space, making the devices suitable for such space-constrained applications as cell phones, digital still cameras, personal digital assistants, and MP3 players.

The new over-voltage protection controllers are specified to operate over the extended -40 °C to +85 °C temperature range. The MAX4880-MAX4884 are housed in a 3 mm x 3 mm, 10-pin, TDFN package. Prices start at $1.40 for 1,000-piece quantities.