The TEA1102x are fast charge ICs which are able fast charge NiCd and NiMH, SLA and Lilon batteries. The main fast charge termination for NiCd and NiMH batteries are∆T/∆t and peak voltage detection, both of which are well proven techniques. The TEA1102x automatically switches over from∆T/∆t to peak voltage detection if the thermistor fails or is not present. The∆T/∆t
detection sensitivity is temperature dependent, thus avoiding false charge termination. Three charge states can be distinguished; fast, top-off and trickle.