NJU7680 Series
2ch Switching Regulator IC

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  • Description

    The NJU7680 is a high-speed low voltage operation switching regulator control IC. It features a totem pole driver that can directly drive an external MOS-FET.Each channel has an on/off switch. Therefore, the power sequence can be activated externally.Internal soft-start function, dead time control and timer latch function are included, and those functions can be easily controlled by external component.

  • Spec
    Input Voltage Range 2.3 V to 7 V (8 V)
    Operating Temperature Range -40°C to 85°C
    Supply Current Typ. 1000 µA
    Standby Current 3 (max.) µA
    Output Voltage Range 1 V to - V
    Output Voltage Accuracy ± 1.5 %
    Oscillator Frequency 300kHz to 1MHz
    Control PWM switching control
    Function Soft-Start Function Internal (4ms typ. or adjustable)
    Timer Latch for Short Circuit Protection
    Dead Time Control
    Channel ON/OFF Function
    Note Step-Down,Step-Up/SEPIC circuit

    Protections / Functions

    TSD ILX OCP OVP UVLO OVLO Reverse Shutdown Soft Start SSCG PGOOD Auto Discharge Anti-ringing Sequencing Max Duty Ext. Phase LED Adjust
  • Technical
    • Related Links

      • Prime Designer

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        Registration to myNISD is required to use some of the functions, such as simulations.

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  • 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.

Download Datasheet

Functional Description

TSD Thermal Shutdown Function
ILX LX Current Limit Function
OCP Overcurrent Protection
OVP Overvoltage Protection
UVLO Undervoltage Lockout Protection
OVLO Overvoltage Lockout Protection
Reverse Reverse Current Protection Circuit
Shutdown Shutdown Function
Soft Start Soft Start Function
SSCG Spread Spectrum Clock Generator Function
PGOOD Power Good Output
Auto Discharge Auto Discharge Function
Anti-ringing Anti-ringing Switch Function
Sequencing Start-up Sequencing Control
Max Duty Maximum Duty Cycle
Ext. Phase Externally Adjustable Phase Compensation
LED Adjust LED High-speed Dimming Control

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