Product Description
The NCP1547 is a 1.5 A buck regulator IC operating at a fixed frequency of 340 kHz. The device employs the V
2™ control architecture to provide unmatched transient response, the best overall regulation and the simplest loop compensation. The NCV8842 accommodates input voltages from 4.0 V to 40 V and contains synchronization circuitry. The on-chip NPN transistor is capable of providing a minimum of 1.5 A of output current and is biased by an external boost capacitor to ensure saturation, thus minimizing on-chip power dissipation. Protection circuitry includes thermal shutdown, cycle-by-cycle current limiting and frequency foldback short-circuit protection.
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Features |
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Benefits |
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Ultra-fast Transient Response, Improved Regulation and Simplified Design
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2.0% Error Amp Reference Voltage Tolerance
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Cycle-by-Cycle Current Limiting
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Limits Switch and Inductor Current
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Switch Frequency Decrease of 4:1 in Short Circuit
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Reduces Short Circuit Power Dissipation
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Bootstrapped Operation (BOOST)
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Increased Efficiency and Minimized On-Chip Power Dissipation
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Synchronization to External Clock (SYNC)
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Synchronization to External Clock (SYNC)
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1.0 A Shutdown Quiescent Current
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Minimize Current Consumption when SHDNB is Asserted
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Protect IC from Over-Temperature
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Decrease Inrush Current and Minimize Output Over-shoot During Start-Up
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Pb-Free Packages are Available
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Applications |
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End Products |
- Industrial Control
- Point-of-Load Voltage Regulation
- Consumer Audio and video
- Computer and Computer Peripheral
- Automotive Version Available As NCV8843
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