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IK3052S2T Datasheet(PDF) 1 Page - IK Semicon Co., Ltd |
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IK3052S2T Datasheet(HTML) 1 Page - IK Semicon Co., Ltd |
1 / 4 page TECHNICAL DATA 2011, February, Rev. 01 Constant Voltage and Constant Current Controller for Adaptors and Battery Chargers Description IK3052 is a highly integrated solution for SMPS applications requiring constant voltage and constant current mode. IK3052 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, and the other low voltage reference combined with the other operational amplifier makes it an ideal current limiter for output low side current sensing. The current threshold is fixed and precise. The only external components are: • A resistor bridge to be connected to the output of the power supply (adapter, 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 (R and C). IK3052, is ideal for smallest package available, is ideal for space shrinked applications such as adapters and battery chargers. Features • CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROL • LOW VOLTAGE OPERATION • PRECISION INTERNAL COMPONENT COUNT • CURRENT SINK OUTPUT STAGE • EASY COMPENSATION • LOW AC MAINS VOLTAGE REJECTION PIN CONNECTION (top view) Pin Definitions and Functions SOT23-6 Pin out Name Pin# Type Function Vcc 6 Power Supply Positive Power Supply Line GND 2 Power Supply Ground Line. 0V Reference For All Voltages Vctrl 1 Analog Input Input Pin of the Voltage Control Loop Ictrl 4 Analog Input Input Pin of the Current Control Loop Out 3 Current Sink Output Output Pin. Sinking Current Only Vsense 5 Analog Input Input Pin of the Current Control Loop IK3052 ORDERI NG I NFORM ATI ON Device Operating Temperature Range Package Shipping IK3052S2T TA = 0° to 85° C for all packages Plastic SOT23-6 Tape& Reel |
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