NC2780
FEATURES
GENERAL DESCRIPTION
- Input Voltage (Maximum Rating):
4.0 V to 34 V (36 V)
- Start-Up Voltage:
4.5 V
- Output Voltage:
0.7 V to 5.3 V
- Feedback Voltage Tolerance:
0.64 V ± 1 %
- Quiescent Current:
Typ. 15 µA (PFM at no load)
The NC2780 is a CMOS-based controller-type buck switching regulator that operates using external high-side and low-side NMOSFETs. Equipped with a PFM function, it achieves high efficiency even at light loads, enabling low consumption in the system. Also, the switching frequency can be adjusted in the range of 250 k Hz to 1 MHz by an external resistor.
- Oscillation Frequency:
250 k Hz to 1 MHz
- Soft-Start:
500 µs (When CSS is open)
Can be optimized with external capacitance.
- Minimum On-Time:
Typ. 100 ns
- Minimum OFF-Time:
Typ. 120 ns
- Duty-Over:
Oscillation Frequency × 1 to 1 / 4
HSOP-18-AK 5.2 mm x 6.2 mm x 1.5 mm
- Operating mode:
Auto switch mode,
Force PWM mode, PLL sync mode
- Operating Temperature Range: -40 °C to 105...
