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LM5146 - 100-V Synchronous Buck DC/DC Controller

Description

The LM5146 100-V synchronous buck controller regulates from a high input voltage source or from an input rail subject to high-voltage transients, minimizing the need for external surge suppression components.

Features

  • 2.

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Full PDF Text Transcription

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LM5146 SNVSBV0A – JUNE 2021 – REVISED JUNE 2021 LM5146 100-V Synchronous Buck DC/DC Controller With Wide Duty Cycle Range 1 Features 2 Applications • Functional Safety-Capable – Documentation available to aid functional safety system design • Versatile synchronous buck DC/DC controller – Wide input voltage range of 5.5 V to 100 V – 150°C maximum junction temperature – 0.8-V reference with ±1% feedback accuracy – Adjustable output voltage from 0.8 V to 60 V – 40-ns tON(min) for high VIN / VOUT ratio – 140-ns tOFF(min) for low dropout – Lossless RDS(on) or shunt current sensing – Optimized for CISPR 11 and CISPR 32 Class B EMI requirements • Switching frequency from 100 kHz to 1 MHz – SYNC in and SYNC out capability – Selectable diode emulation or FPWM • 7.
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