1.5 A, 31 V, 30 kHz, Buck Converter
NR117K
Data Sheet
Description
The NR117K is buck converter ICs that integrate the ...
1.5 A, 31 V, 30 kHz, Buck Converter
NR117K
Data Sheet
Description
The NR117K 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 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 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 87% Efficiency (VIN = 12 V, VO = 5 V, IO = 0.3 A) Up to 68% Efficiency at Maximum at Ligh Load (VIN = 12 V, VO = 5 V, IO = 10 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 ● Frequency: 30 kHz (EMI considered) ● Protection Functions: ● Overcurrent Protection (OCP): Drooping, auto-restart
Thermal Shutdown (TSD): Auto-restart Under
Voltage Lockout (UVLO)
Typical Application...