NR110K

4 A, 31 V, 350 kHz, Buck Converter NR110K Data Sheet Description The NR110K is 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), Under-Voltage 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 energysaving 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 EN pin that turns the regulator on or off, and achieves low power consumption requirements. The package of NR117K is the HSOP8 with an exposed thermal pad on the back side. Features ● Up to 90% Efficiency (VIN = 12 V, VO = 5 V, IO = 1 A) Up to 70% Efficiency at Maximum at Ligh Load (VIN = 12 V, VO = 5 V, IO = 30 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 Under Voltage Lockout (UVLO) Typical Application Package HSOP8 1 8 2 7 3 6 4 5 ...