[Sunken Electric New Product Information] Output voltage variable type switching regulator IC "NR264S" equipped with lightweight load high efficiency function.

The NR264S is a synchronous rectification switching regulator IC that incorporates a power MOSFET. To achieve high efficiency under light load conditions, it operates in pulse skip mode during light loads. It operates stably with low ESR capacitors such as ceramic capacitors due to its peak current control method. It is equipped with comprehensive protection features including overcurrent protection, low input voltage protection, and thermal protection.
【Features】
- Synchronous rectification type
- Operating modes
Steady state: Current mode PWM control
Light load: Pulse skip operation
- Maximum efficiency (VIN = 12 V, VOUT = 5 V)
Steady state: 94%
Light load (Iout = 10 mA): 86%
- Stabilizes output with low ESR ceramic capacitors
- Reduces the number of external components (fixed output 5 V)
- Allows setting of soft start time with external capacitors
- Enable function
- Frequency limitation function (limits pulse skip frequency at light load to 28 kHz)
- Protection features
Overcurrent protection (OCP): Latch type, automatic recovery
Thermal shutdown protection (TSD): Automatic recovery
Low input voltage malfunction prevention circuit (UVLO)
Output short-circuit protection: Burst oscillation operation (Hiccup)

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