NJM2839 Series
Positive/Negative 2ch Low Dropout Voltage Regulator

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  • Description

    The NJM2839 is a positive/negative 2-channel low dropout voltage regulator featuring a low noise, high precision of ±1.5% (both channels), high ripple rejection ratio of 75dB (positive typ.),65dB (negative typ.), and 100mA output current (both outputs).It also offers useful functions of an ON/OFF control, thermal overload protection and short circuit current limit, and it can use ceramic capacitor of 1µF as an output capacitor. Further taking voltage output sequence into consideration, the NJM2839 provides an soft-start function and output shunt switch in negative voltage channel. It is available in a small surface mount 8-lead MSOP (VSP) package. It is suitable for a power supply circuit for CCD and others.

  • Spec
    Input Voltage Range -12 V to 18 V (20 V)
    Operating Temperature Range -40°C to 85°C
    Standby Current 0.1 (max.) µA
    Output Voltage Range 15/-7.5V,13/-7.5V,12/-7.5V,12/-6.3V,12/-6.0V,11.6/-6.0V,12/-6.5V,12/-8.0V,13/-7.0V
    Output Voltage Accuracy Typ. ±1.5 %
    Dropout Voltage Typ. Positive CH : 0.10V (Io1=60mA)
    Negative CH : 0.13V (Io2=60mA)
    Output Current Io1(max.)=100 mA
    Output Noise Voltage Typ. Vno1 = 45µVrms / Vno2 = 100μVrms
    Package MSOP8(VSP8)
    Ceramic Capacitor Output capacitor with 1.0µF ceramic capacitor.
    Note Internal Thermal Overload Protection
    Internal Short Circuit Current Limit
    ON/OFF Control (with output shunt SW)

    Protections / Functions

    TSD Reverse Current Limit ISC Inrush Constant Slope ECO mode Auto Discharge External Driver
  • Technical
  • Quality &
    • Refer to the datasheets for the details on the product.
    • The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.

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Functional Description

TSD Thermal Shutdown Function
Reverse Current Protection Reverse Current Protection
Current Limit Overcurrent Protection
ISC Short Current Protection
Inrush Current Limit Inrush Current Protection
Constant Slope Constant Slope Function
ECO mode ECO Function
Auto Discharge Auto Discharge Function
External Driver External Output Driver Transistor

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Functions Constant Slope