Part # TSM1051 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: Constant voltage and constant current controller for battery chargers and adaptors

Part Details:

TSM1051 Constant voltage and constant current controller for battery chargers and adaptors Features Constant voltage and constant current control Low voltage operation Precision internal voltage reference Low external component count Current sink output stage Easy compensation SO-8 SOT23-6 Low AC mains voltage rejection Description The only external components are: The device is is a highly integrated solution for ­ A resistor divider to be connected to the SMPS applications requiring CV (constant output of the power supply (adaptor, battery voltage) and CC (constant current) mode. charger) to set the voltage regulation by It integrates one voltage reference, two dividing the desired output voltage to match operational amplifiers (with ORed outputs - the internal voltage reference value. common collectors), and a current sensing circuit. ­ A sense resistor having a value and allowable dissipation power which need to The voltage reference combined with one be chosen according to the internal voltage operational amplifier makes it an ideal voltage threshold. controller; the current sensing circuit and the other operational amplifier make up the current ­ Optional compensation components (RC). control loop. Housed in one of the smallest package available, it is ideal for space-shrunk applications such as adaptors and battery chargers. Applications Adaptors Battery chargers Table 1. Device summary Order codes Package Packaging TSM1051CLT SOT23-6 Tape and reel TSM1051CD SO-8 Tube TSM1051CDT SO-8 Tape and reel February 2008 Rev 3

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TSM1051.pdf Datasheet