OBSOLETE

NR121E

Package Image

Package : eSOIC8

RoHS : YES

Data Sheet(1.3MB)
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NR120E series is buck regulator ICs integrates High-side power MOSFETs.
The feature increasing efficiency at light loads allows the device to be used in the energy-saving applications.
With the current mode control, ultra low ESR capacitors such as ceramic capacitors can be used.
The ICs have protection functions such as Over-Current Protection (OCP), Under-Voltage Lockout (UVLO) and Thermal Shutdown (TSD).
An adjustable Soft-Start by an external capacitor prevents the excessive inrush current at turn-on.
The ON/OFF pin (EN Pin) turns the regulator on or off and helps to achieve low power consumption requirements.
The ICs integrate phase compensation circuit which reduces the number of external components and simplifies the design of customer application.
The NR120E series is available in an 8-pin SOIC package with an exposed thermal pad on the back side.

Data Download

Design Support

  • Technical Documents

Technical Documents

Features

    ・Maximum efficiency: 94％
    ・PWM mode
    ・Low ESR (i.e. ceramic condensers) can be used for output
    ・Built-in protection circuit
    　　Overcurrent protection (OCP): drooping type auto restart
    　　Thermal shutdown (TSD)　: auto restart
    　　Undervoltage (UVLO) circuit
    ・Built-in phase compensation, with no need for external components
    ・Adjustable soft-Start with an external capacitor
    ・ON/OFF function

Application

l LCD-TV
l Blu-Ray
l Stand-by power supply for digital appliances

Specifications

Built-in Power Power IC
Output Method Variable
Output Voltage 14.0 V
Output Current 3.0 A
Input Voltage Range 4.5 to 18 V
Operating Frequency 350 kHz
Synchronous / Asynchronous Asynchronous
Current Mode Control YES
Maximum Input Voltage 18.00 V
Output On / Off YES
Low ESR Capacitor Support YES
Overcurrent Protection Drooping Type
Phase Compensation Built-in
Thermal Protection YES
UVLO YES
Package Weight (Typ.)
Automotive Qualified

Typical Application

Typical Application

Block Diagram

Block Diagram

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