Battery monitor

Diodes has announced a miniature current monitor delivering what it claims is the world’s smallest solution size for battery current measurement in portable applications.

Packaged in the 4-pin 1.2 x 1.8 mm DFN package, the ZXCT1023 will support system management functions aimed at extending active run times.

A current monitor, the device has a fixed gain of 50 and needs a single external current sense resistor for accurate current monitoring.

Consuming a typical quiescent current of 3.5 µA, the device will help reduce power drain and prolong battery life.

The monitor’s wide operating voltage range, from 2.5 to 20 V, means it will suit a broad range of Li-Ion and Li-polymer battery cell configurations.

Typical uses include battery charging, battery capacity measurement and overcurrent monitoring in applications including PDAs, mobile phones and MP3 players.