NR111E |Sanken Electric



Data sheetdownload (PDF:717.06KB)
Application Notedownload (PDF:1122.77KB)


The NR110E 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 ICs integrate phase compensation circuit which reduces the number of external components and simplifies the design of customer application.
The ON/OFF pin (EN Pin) turns the regulator on or off and helps to achieve low power consumption requirements.
The NR110E series is available in an 8-pin SOIC package with an exposed thermal pad on the back side.


 LCD TV / Blu-Ray / Set top box
 Green Electronic products
 White goods
 Stand-by power supply for digital appliances


・Up to 94% Efficiency
・Up to 68% efficiency at light load
 (VIN=12V, Vo=5V, IO=20mA)
・Current mode PWM control
・Adjustable overcurrent protection (OCP)
・Stable with low-ESR ceramic output capacitors
・Built-in protection circuit
 -Overcurrent protection (OCP):
  drooping type auto restart
 -thermal shutdown (TSD): auto restart
 -Undervoltage (UVLO) circuit
・Built-in phase compensation
・Adjustable soft-Start with an external capacitor
・ON/OFF function



Package Name:eSOIC8

Package Diagram

Design Support


Built-in PowerYES
Output Voltage0.8V to 24V
Output Current4A
Input Voltage Range8V to 31V
Operating Frequency350kHz
Synchronous / AsynchronousAsynchronous
Current Mode ControlYES
Maximum Input Voltage31V
Minimum Input Voltage8V
Output On / OffYES
Low ESR Capacitor SupportYES
Overcurrent ProtectionDrooping Type
Phase CompensationBuilt-in
Thermal ProtectionYES

Representative Circuit

Internal Block Diagram

Pin-out Diagrams

Data sheetdownload (PDF:717.06KB)
Application Notedownload (PDF:1122.77KB)
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