User's Manual

Description of TC-700 Desktop Charger

Ⅰ. General Description

The charger is developed & designed for TC-700 wireless series. The charger adopts bq2000T——a

programmable multi-chemistry fast-charge management IC.

The charger is for fast-charge management of nickel cadmium (Ni-Cd), nickel metal-hydride (Ni-MH), or

lithium-ion (Li-Ion) batteries in single or multi-chemistry applications.

High-frequency switching controller for efficient and simple charge design, provides over 90% efficiency

rating.

Ⅱ. General description of bq2000T functions

The bq2000T detects the battery chemistry and proceeds with the optional charging and termination

algorithms. This process eliminates undesirable undercharged or overcharged conditions and allows

accurate and safe termination of fast charge.

Depending on the chemistry, the bq2000T provides a number of charge termination criteria:

z Peak voltage detection (PVD) (for NiCd and NiMH)

z Minimum charging current (for Li-Ion)

z Maximum temperature

z Maximum charge time

Pin Connections