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SY21197 - Synchronous Step-Down Regulator

Datasheet Summary

Features

  • The SY21197 high-efficiency synchronous stepdown DC/DC regulator operates over a wide input voltage range of 4.5V to 18V, and can deliver an output current up to 6A. It integrates a main switch and a synchronous switch with very low RDS(ON) to minimize conduction loss. The 400kHz pseudoconstant switching frequency enables using small external inductor and capacitor values The SY21197 uses constant-on-time and ripplebased control to provide high efficiency at light loads, and to achieve fast tra.

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Datasheet Details

Part number SY21197
Manufacturer Silergy
File Size 1.28 MB
Description Synchronous Step-Down Regulator
Datasheet download datasheet SY21197 Datasheet
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Full PDF Text Transcription

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SY21197 High Efficiency, 6A, 18V Input Synchronous Step-Down Regulator General Description Features The SY21197 high-efficiency synchronous stepdown DC/DC regulator operates over a wide input voltage range of 4.5V to 18V, and can deliver an output current up to 6A. It integrates a main switch and a synchronous switch with very low RDS(ON) to minimize conduction loss. The 400kHz pseudoconstant switching frequency enables using small external inductor and capacitor values The SY21197 uses constant-on-time and ripplebased control to provide high efficiency at light loads, and to achieve fast transient responses for applications with high step-down ratios. It also provides cycle-by-cycle current limiting and overtemperature protection. The SY21197 is available in a compact TSOT23-6 package.
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