NR111D |Sanken Electric

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NR111D

Data Sheetdownload (PDF:872.00KB)
Application Notedownload (PDF:1235.40KB)

Description

NR110D 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 DIP package.

Application

・Power supply for LCDTV, PDP
・Power supply for DVD, BD, STB
・On-board local power supplies
・Switching power supply

Features

・Up to 90% 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 function
 -Overcurrent protection (OCP)
  Drooping type auto restart
 -Thermal shutdown (TSD) auto restart
 -Undervoltage (UVLO) circuit
・Built-in phase compensation,
 with no external components required
・Adjustable Soft-Start with an external capacitor
・ON/OFF function

Remarks

Package

Package Name:DIP8

Package Diagram

Design Support

Specifications

Built-in PowerYES
Output Voltage0.8V to 24V
Output Current4A
Input Voltage Range6.5V to 31V
Operating Frequency350kHZ
Synchronous/AsynchronousAsynchronous
Current Mode ControlYES
Maximum Input Voltage35V
Minimum Input Voltage6.5V
Output on/offYES
Low ESR Capacitor SupportYES
Overcurrent ProtectionDrooping Type
Phase CompensationBuilt-in
Thermal ProtectionYES
UVLOYES

Representative Circuit

Internal Block Diagram

Pin-Out Diagrams

Data Sheetdownload (PDF:872.00KB)
Application Notedownload (PDF:1235.40KB)
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