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SC2446 - Dual-Phase Single or Two Output Synchronous Step-Down Controller

Description

The SC2446 is a high-frequency dual synchronous stepdown switching power supply controller.

It provides outof-phase high-current output gate drives to all N-channel MOSFET power stages.

The SC2446 operates in synchronous continuous-conduction mode.

Features

  • ‹ 2-Phase synchronous continuous conduction mode ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ for high efficiency step-down converters Out of phase operation for low input current ripples Output source and sink currents Fixed frequency peak current-mode control 75mV/-110mV maximum current sense voltage Synthesized MOSFET RDS(ON) current-sensing for low-cost.

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Datasheet Details

Part number SC2446
Manufacturer SEMTECH
File Size 850.82 KB
Description Dual-Phase Single or Two Output Synchronous Step-Down Controller
Datasheet download datasheet SC2446 Datasheet

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Full PDF Text Transcription

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Dual-Phase Single or Two Output www.DataSheet4U.com Synchronous Step-Down Controllers POWER MANAGEMENT Description The SC2446 is a high-frequency dual synchronous stepdown switching power supply controller. It provides outof-phase high-current output gate drives to all N-channel MOSFET power stages. The SC2446 operates in synchronous continuous-conduction mode. Both phases are capable of maintaining regulation with sourcing or sinking load currents, making the SC2446 suitable for generating both VDDQ and the tracking VTT for DDR applications. The SC2446 employs fixed frequency peak current-mode control for the ease of frequency compensation and fast transient response.
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