NR264S

Light Load High Efficiency Synchronous Rectification Buck Converter IC NR264S Data Sheet Description The NR264S 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. Features ● Synchronous Rectification ● Operation Modes: Normal Load: Current Mode PWM Control Light Load: Pulse Skip Operation ● Maximum Efficiency (VIN = 12 V, VOUT = 5 V) Normal Load: 94% Light Load (IOUT = 10 mA): 86% ● Stable with a Low ESR Ceramic Output Capacitor ● Soft-start Period Adjustment by External Capacitor ● Enable Function ● Frequency Limitation Function (Pulse Skip Frequency in Light Load is Limited to 28 kHz) ● Protections: Overcurrent Protection (OCP): Drooping Type, Autorestart Thermal Shutdown (TSD): Auto-restart Undervoltage Lockout (UVLO) Output Short Circuit Protection: Burst Oscillation Operation (Hiccup) Typical Application Package SOP8 Not to scale Specifications ● Input Voltage, VIN: 8.0 V to 31 V ● Output Voltage, VOUT: 3 V to 18 V ● Output Current, IOUT: 1 A ● Fixed Operating Frequency: 500 kHz Applications ● White Goods ● Audio Visual Equipment ● Of...