July 2007

Rev 1

1/21

AN2448

Application note

EVALTSM1052: Ultra small battery charger using TSM1052

Introduction

This document describes a low power adapter that can be used in travel battery charger

applications. It uses the new Constant Voltage Constant Current (CVCC) controller

TSM1052, which is housed in one of the smallest packages available (SOT23-6L). Thanks

to its low consumption and low operating voltage, good electrical performance is achieved.

Another important feature of this SMPS is the absence of the Y1 safety capacitor between

primary and secondary grounds.

Figure 1.

EVALTSM1052 demo board

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