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SN71052 Datasheet(PDF) 1 Page - KODENSHI_AUK CORP. |
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SN71052 Datasheet(HTML) 1 Page - KODENSHI_AUK CORP. |
1 / 6 page KSD-I5P012-000 1 Dec, 2011 REV. 00 SN71052 Constant voltage and constant current controller for battery chargers and adapters ▲ Marking Detail Information ① Device Code ② Week Code Product Marking Package SN71052 702 SOT-26 Description The SN71052 is a highly integrated solution for SMPS applications requiring a dual control loop to perform CV (constant voltage) and CC (constant current) regulation. The SN71052 integrates a voltage reference, Two Op-Amps (with OR-ed open-drain outputs), and a low-side current sensing circuit. The voltage reference, along with one Op-Amp, is the core of the voltage control loop; the current sensing circuit and the other Op-Amp make up the current control loop. The external components needed to complete the two control loops are: ■ A resistor divider that senses the output of the power supply (adapter, battery charger) and fixes the voltage regulation set point at the specified value; ■ A sense resistor that feeds the current sensing circuit with a voltage proportional to the dc output current; this resistor determines the current regulation set point and must be adequately rated in terms of power dissipation; ■ Frequency compensation components (R-C networks) for both loops. Application ◈ Battery chargers ◈ AC to DC adapters S Se em miic co on nd du uc ctto or r http:// www.auk.co.kr ORDERING INFORMATION SOT-26 702(①) □(②) Block Diagram |
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