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SC453 - VID Programmed Single Phase Power Supply Controller

Datasheet Summary

Description

The SC453 IC is a single chip high-performance Hysteretic PWM controller.

With its integrated SmartDriver™, it powers advanced graphics and core processors.

It provides sleep mode and boot voltage support.

Features

  • softstart, an open-drain PWRGD signal with power good blanking, and an enable input. Programmable current limiting shuts down the SC453 after 32 current limit pulses. SC453 Features High Speed Hysteretic Controller Single Phase Operation Selectable Analog or VID Controlled Sleep Setting 6 Bit VID programmable Output Integrated Drivers with Soft-High Side Turn-On Programmable Soft-Start Programmable Boot Voltage Programmable Sleep Voltage with Sleep Mode Under-Voltage Lockout on VCCA Over-volta.

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Datasheet preview – SC453

Datasheet Details

Part number SC453
Manufacturer Semtech Corporation
File Size 364.61 KB
Description VID Programmed Single Phase Power Supply Controller
Datasheet download datasheet SC453 Datasheet
Additional preview pages of the SC453 datasheet.

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Full PDF Text Transcription

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Portable, VID Programmed Single Phase Power Supply Controller POWER MANAGEMENT Description The SC453 IC is a single chip high-performance Hysteretic PWM controller. With its integrated SmartDriver™, it powers advanced graphics and core processors. It provides sleep mode and boot voltage support. Automatic "powersave" is present to prevent negative current flow in the low-side FET during light loading conditions saving even more power. The high side driver initially turns on with a weak drive to reduce ringing, EMI, and capacitive turn-on of the low side. A 6-bit DAC, accurate to 0.85%, sets the output voltage reference, and implements the 0.700V to 1.708V range required by the processor.
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