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NJM2309 Series
Switching Regulator Control IC for Step-Down

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  • Description

    The NJM2309 is a step-down Switching regulator IC with a wide operating voltage.It features an open collector driver that can configure step-down applications.Internal soft-start function and timer latch function for short circuit protection are included, requiring no external components.

  • Spec
    Consumer
    Input Voltage Range 3.6 V to 32 V (36 V)
    Operating Temperature Range -40°C to 85°C
    Supply Current Typ. 5500 µA
    Output Voltage Range 0.52 V to 30 V
    Output Voltage Accuracy ± 2 %
    Oscillator Frequency 5kHz to 500 kHz
    Maximum Duty Cycle Duty Cycle (0% to 100%)
    Package DMP8
    SOP8 JEDEC 150mil
    SSOP8
    Control PWM switching control
    Function Soft Start function
    Timer Latch for Short Circuit Protection
    Note Under Voltage Lockouts (U.V.LO)
    Download Datasheet

    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
    Functional Description
  • Technical
    Documents

    • Related Links

      • Prime Designer

        Online Design Tool

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

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  • Quality &
    Packages
    Product Name Compatibility Package Marking Reliability
    NJM2309M
    • gradeConsumer
    		 DMP8 - NJM-1-s-fr
    NJM2309E
    • gradeConsumer
    		 SOP8 JEDEC 150mil(EMP8) - NJM-1-s-fr
    NJM2309V
    • gradeConsumer
    		 SSOP8 - NJM-1-s-fr
    • 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.
  • Sample / Buy
Similar Products

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

Search for similar products under conditions below.

Category:DC/DC Switching Regulators

Topology Buck
VIN
min (V)		 3.6
VIN
max (V)		 32
VOUT
min (V)		 0.52
VOUT
max (V)		 30
ISS
(µA)		 5500