NCP81147MNTXG

The NCP81147 is a simple single phase solution with differential phase current sensing, power saving operation, and gate drivers to provide accurately regulated power. The adaptive non overlap gate drive and power saving operation circuit provide a low switching loss and high efficiency solution for server, notebook, and desktop systems. A high performance operational error amplifier is provided to simplify compensation of the system. The NCP81147 features also include soft-start sequence, accurate overvoltage and over current protection, UVLO for VCC and VCCP, and thermal shutdown.

• High Performance Operational Error Amplifier
• Internal Soft-Start/Stop
• ±0.5% Internal Voltage Accuracy, 0.8 V voltage reference
• OCP accuracy, Four Re-entry Times Before Latch
• “Lossless” Differential Inductor Current Sensing
• Internal High Precision Current Sensing Amplifier
• Oscillator Frequency Range of 100 kHz - 1000 kHz
• 20 ns Adaptive FET Non-overlap Time of Internal Gate Driver
• 5.0 V to 12 V Operation
• Support 1.5 V to 19 V Vin
• Vout from 0.8 V to 3.3 V (5 V with 12 VCC)
• Chip Enable through OSC pin
• Latched Over Voltage Protection (OVP)
• Internally Fixed OCP Threshold
• Guaranteed Startup Into Pre-Charged Loads
• Thermally Compensated Current Monitoring
• Thermal Shutdown Protection
• Integrated MOSFET Drivers
• Integrated BOOST Diode with internal Rbst = 2.2
• Automatic Power Saving Mode to Maximize Efficiency During Light Load Operation