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NR111D - Buck Converter

General Description

The NR111D is a buck converter IC that integrates the power MOSFET.

With the current mode control, ultra low ESR capacitors such as ceramic capacitors can be used.

The IC has protection functions such as Overcurrent Protection (OCP), Undervoltage Lockout (UVLO) and Thermal Shutdown (TSD).

Key Features

  • Up to 94% Efficiency Up to 68% Efficiency at Maximum at Light Load (IO = 20 mA).
  • Current mode PWM control.
  • Stable with Low ESR Ceramic Output Capacitors.
  • No External Components Required by Incorporating Phase Compensation.
  • Soft-start Function Adjustable Soft-start time with an External Capacitor.
  • External ON/OFF Function.
  • Protection Functions: Overcurrent Protection (OCP): Drooping, auto-restart Thermal Shutdown (TSD): Auto-restart Undervoltage Lockout (UVLO).

📥 Download Datasheet

Datasheet Details

Part number NR111D
Manufacturer Sanken
File Size 723.07 KB
Description Buck Converter
Datasheet download datasheet NR111D Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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31 V, Buck Converter NR111D Data Sheet Description The NR111D is a buck converter IC that integrates the power MOSFET. With the current mode control, ultra low ESR capacitors such as ceramic capacitors can be used. The IC has protection functions such as Overcurrent Protection (OCP), Undervoltage Lockout (UVLO) and Thermal Shutdown (TSD). An adjustable Soft-start by an external capacitor prevents the excessive inrush current in startup. The feature increasing efficiency at light loads allows the device to be used in the energy-saving applications. The IC integrates phase compensation circuit which reduces the number of external components and simplifies the design of customer application.