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NR111E

Package Image

Package:eSOIC8

The NR110E series are buck converter ICs that integrate the power MOSFET. With the current mode control, ultra low ESR capacitors such as ceramic capacitors can be used. The ICs have 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 ICs integrate phase compensation circuit which reduces the number of external components and simplifies the design of customer application. The IC has the enable function by the EN pin that turns the regulator on or off. The package of NR110E series is the eSOIC8 with an exposed thermal pad on the back side.

Features

    • Up to 94% Efficiency
      Up to 68% Efficiency at Maximum at Light Load
      (VIN = 12 V, Vo = 5 V, 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
    • Enable Function
    • Protection Functions:
      Overcurrent Protection (OCP): Drooping, auto-restart
      Thermal Shutdown (TSD): Auto-restart
      Undervoltage Lockout (UVLO)

Application

    • Audio Visual Equipment
    • Auxiliary Power Supply

Specifications

Built-in Power Power IC
Output Method Variable
Output Voltage 24.0 V
Output Current 4.0 A
Input Voltage Range 8.0 to 31 V
Operating Frequency 350 kHz
Synchronous / Asynchronous Asynchronous
Current Mode Control YES
Maximum Input Voltage 31.00 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.) 0.08 g

Typical Application

Typical Application

Block Diagram

Block Diagram

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