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IR3891 - Synchronous Buck Regulator

Description

The IR3891 SupIRBuck® is an easy-to-use, fully integrated and highly efficient DC/DC regulator.

The onboard PWM controller and MOSFETs make IR3891 a space-efficient solution, providing accurate power delivery for low output voltage.

Features

  • Single 5V to 21V.

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Full PDF Text Transcription

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Dual output, 4A/Phase, Highly Integrated SupIRBuck® Single-Input Voltage, Synchronous Buck Regulator IR3891 FEATURES • Single 5V to 21V application • Wide Input Voltage Range from 1V to 21V with external Vcc • Output Voltage Range: 0.5V to 0.86*PVin • Dual output, 4A/Phase • Enhanced Line/Load Regulation with Feed- Forward • Programmable Switching Frequency up to 1.5MHz • Internal Digital Soft-Start • Enable input with Voltage Monitoring Capability • Thermally compensated current limit and Hiccup Mode Over Current Protection • External synchronization with Smooth Clocking • Precision Reference Voltage (0.
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