Synchronous PWM Switching Converter

  The NCP3170 is a flexible synchronous PWM Switching Buck Regulator. The NCP3170 operates from 4.5 V to 18 V, sourcing up to 3 A and is capable of producing output voltages as low as 0.8 V. The NCP3170 also incorporates current mode control. To reduce the number of external components, a number of features are internally set including soft start, power good detection, and switching frequency. The NCP3170 is currently available in an SOIC−8 package.

Features

• 4.5 V to 18 V Operating Input Voltage Range

• 90 m High-Side, 25 m Low-Side Switch

• FMEA Fault Tolerant During Pin Short Test

• 3 A Continuous Output Current

• Fixed 500 kHz and 1 MHz PWM Operation

• Cycle-by-Cycle Current Monitoring

• 1.5% Initial Output Accuracy

• Internal 4.6 ms Soft-Start

• Short-Circuit Protection

• Turn on Into Pre-bias

• Power Good Indication

• Light Load Efficiency

• Thermal Shutdown

• These are Pb-Free Devices

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