NCS1002ADR2G

ON SEMICONDUCTOR  NCS1002ADR2G  SECONDARY SIDE CTRL, VOLT/CURRENT, SOIC8 新

The NCS1002A is a performance upgrade from the NCS1002 focused on reducing power consumption in applications that require more efficient operation. It is a highly integrated solution for Switching Mode Power Supply SMPS applications requiring a dual control loop to perform Constant Voltage CV and Constant Current CC regulation. The NCS1002A integrates a 2.5 V voltage reference and two precision op amps. The voltage reference, along with Op Amp 1, is the core of the voltage control-loop. Op Amp 2 is an independent, uncommitted amplifier specifically designed for the current control. Key external components needed to complete the two control loops are: a A resistor divider that senses the output of the power supply battery charger and fixes the voltage regulation set point at the specified value. b 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. The NCS1002A comes in a small 8-pin SOIC package and is ideal for space-shrunk applications such as battery chargers.

Features

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Low Input Offset Voltage: 0.5 mV, Typ

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Input Common-Mode Range includes Ground

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Low Quiescent Current: 75 µA per Op Amp at VCC = 5 V

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Large Output Voltage Swing

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Wide Power Supply Range: 3 V to 36 V

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High ESD Protection: 2 kV