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LT8645S - 8A Synchronous Step-Down Silent Switcher

Description

The LT®8645S/LT8646S synchronous step-down regulator

Features

  • n Silent Switcher®2 Architecture n Ultralow EMI Emissions on Any PCB n Eliminates PCB Layout Sensitivity n Internal Bypass Capacitors Reduce Radiated EMI n Optional Spread Spectrum Modulation n High Efficiency at High Frequency n Up to 95% Efficiency at 1MHz, 12VIN to 5VOUT n Up to 94% Efficiency at 2MHz, 12VIN to 5VOUT n Wide Input Voltage Range: 3.4V to 65V n Ultralow Quiescent Current Burst Mode Operation n 2.5μA IQ Regulating 12VIN to 3.3VOUT (LT8645S) n Output Ripple < 10mVP-P n External Co.

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Datasheet Details

Part number LT8645S
Manufacturer Analog Devices
File Size 3.17 MB
Description 8A Synchronous Step-Down Silent Switcher
Datasheet download datasheet LT8645S Datasheet
Additional preview pages of the LT8645S datasheet.

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Full PDF Text Transcription

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LT8645S/LT8646S 65V, 8A Synchronous Step-Down Silent Switcher 2 with 2.5µA Quiescent Current FEATURES n Silent Switcher®2 Architecture n Ultralow EMI Emissions on Any PCB n Eliminates PCB Layout Sensitivity n Internal Bypass Capacitors Reduce Radiated EMI n Optional Spread Spectrum Modulation n High Efficiency at High Frequency n Up to 95% Efficiency at 1MHz, 12VIN to 5VOUT n Up to 94% Efficiency at 2MHz, 12VIN to 5VOUT n Wide Input Voltage Range: 3.4V to 65V n Ultralow Quiescent Current Burst Mode Operation n 2.5μA IQ Regulating 12VIN to 3.3VOUT (LT8645S) n Output Ripple < 10mVP-P n External Compensation: Fast Transient Response and Current Sharing (LT8646S) n Fast Minimum Switch On-Time: 40ns n Low Dropout Under All Conditions: 60mV at 1A n Adjustable and Synchronizable: 200kHz to 2.
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