OBSOLETE

NR887D

Package Image

Package:DIP8

3D CAD Data

The NR887D is synchronous buck regulator ICs integrates High-side and Low-side power MOSFETs.
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 NR887D is available in an 8-pin DIP package.

Features

    ・Current mode PWM control
    ・Maximum efficiency: 95%
    ・Stable with low-ESR ceramic output capacitors
    ・Built-in Protection functions:
     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 Power supply for digital appliances

Specifications

Built-in Power Power IC
Output Method Variable
Output Voltage 14.0 V
Output Current 2.0 A
Input Voltage Range 4.5 to 18 V
Operating Frequency 500 kHz
Synchronous / Asynchronous Synchronous
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.) g

Typical Application

Typical Application

Block Diagram

Block Diagram

Physical Dimensions

Physical Dimensions

Questions or Comments?

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