Nisshinbo NC2780 Buck Switching Regulator
Nisshinbo NC2780 Buck Switching Regulator is a CMOS-based controller-type buck switching regulator that operates with external high-side and low-side NMOSFETs. This regulator is equipped with a PFM function, which achieves high efficiency even at light loads, enabling low system consumption. The NC2780 switching regulator operates at a 4V to 34V (36V) input voltage range, 250kHz to 1MHz oscillation frequency range, and 0.7V to 5.3V output voltage range. This regulator provides protection features like Overvoltage Detection (OVD), Undervoltage Detection (UVD), Short-Circuit (SC), and output OverCurrent (OC). The NC2780 switching regulator operates from a -40°C to 105°C temperature range. Typical applications include digital TV, DVD players, printers, fax machines, mobile communication equipment, cameras and video instruments, and battery-powered equipment.
Features
- 4V to 34V (36V) input voltage range (Vout)
- 4.5V start-up voltage
- 0.7V to 5.3V output voltage range
- 0.64V ± 1% feedback voltage tolerance
- 250kHz to 1MHz oscillation frequency range
- 100ns typical minimum on-time
- 120ns typical minimum off-time
- Power-Good
- Anti-phase clock output
- 3.3V (typical) Under Voltage Lockout (UVLO) function
- Overvoltage Detection (OVD) and Undervoltage Detection (UVD)
- 160°C typical thermal shutdown
- Output OverCurrent (OC) protection: hiccup mode/latch mode
- Short-Circuit (SC) protection function: SW to VIN or GND
- 5.2mm x 6.2mm x 1.5mm dimensions
- HSOP-18-AK package
Applications
- Digital TVs
- DVD players
- Printers
- Fax machines
- Mobile communication equipment
- Cameras and video instruments
- High-voltage battery-powered equipment
Typical Application Circuit Diagram
Block Diagram
Dimension Diagram
Associated Board
Nisshinbo NC2780 Evaluation Board
Based on the NC2780 switching regulator, which operates with external high- and low-side NMOSFETs.