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NR263S - Synchronous Rectification Buck Converter

General Description

The NR263S is synchronous rectification buck converter IC with built-in power MOSFET.

In light load, the IC operates with the pulse skip mode to improve the efficiency.

By using the peak current control method, the IC stably operates with a low ESR capacitor such as a ceramic capacitor.

Key Features

  • Synchronous Rectification.
  • Operation Modes: Normal Load: Current Mode PWM Control Light Load: Pulse Skip Operation.
  • Maximum Efficiency (VIN = 9 V, VOUT = 5 V) Normal Load: 93% Light Load (IOUT = 10 mA): 86%.
  • Stable with a Low ESR Ceramic Output Capacitor.
  • Few External Component Counts (Fixed Output Voltage of 5 V).
  • Soft-start Period Adjustment by External Capacitor.
  • Enable Function.
  • Protections: Overcurrent Protection (OCP): Drooping Type, Autorestart The.

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Datasheet Details

Part number NR263S
Manufacturer Sanken
File Size 556.17 KB
Description Synchronous Rectification Buck Converter
Datasheet download datasheet NR263S Datasheet

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Full PDF Text Transcription (Reference)

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Light Load High Efficiency Synchronous Rectification Buck Converter IC NR263S Data Sheet Description The NR263S is synchronous rectification buck converter IC with built-in power MOSFET. In light load, the IC operates with the pulse skip mode to improve the efficiency. By using the peak current control method, the IC stably operates with a low ESR capacitor such as a ceramic capacitor. The IC has the various protections such as the overcurrent protection, the undervoltage lockout, and the thermal shutdown. The IC achieves the switching regulator circuit with few components and small mounting area.