TK65421 Overview
The TK654xx low power step-down converter is designed for portable battery systems, capable of operating from a single Li-ion battery cell or multiple alkaline or rechargeable (NiCd or NiMH) battery cells (up to 6 V). The TK654xx provides the power switch, synchronous rectifier, and the control circuit for a buck step-down converter. Only two external ponents are required to plete the stepdown conversion.