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TSM1051CDT Datasheet(PDF) 1 Page - STMicroelectronics |
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TSM1051CDT Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 15 page  February 2008 Rev 3 1/15 15 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 ■ Low AC mains voltage rejection Description The device is is a highly integrated solution for SMPS applications requiring CV (constant voltage) and CC (constant current) mode. It integrates one voltage reference, two operational amplifiers (with ORed outputs - common collectors), and a current sensing circuit. The voltage reference combined with one operational amplifier makes it an ideal voltage controller; the current sensing circuit and the other operational amplifier make up the current control loop. The only external components are: – A resistor divider to be connected to the output of the power supply (adaptor, battery charger) to set the voltage regulation by dividing the desired output voltage to match the internal voltage reference value. – A sense resistor having a value and allowable dissipation power which need to be chosen according to the internal voltage threshold. – Optional compensation components (RC). 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 SO-8 SOT23-6 Table 1. Device summary Order codes Package Packaging TSM1051CLT SOT23-6 Tape and reel TSM1051CD SO-8 Tube TSM1051CDT SO-8 Tape and reel www.st.com |
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