SY8009 PDF Datasheet


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Description

This is Synchronous Step Down Regulator. Applications Note: AN_SY8009 High Efficiency 1.5MHz, 1MHz, 1.5A, 2A Synchronous Step Down Regulator Preliminary Spec General Description The SY8009A and SY8009B are high-efficiency , high frequency synchronous step-down DC-DC regulator ICs capable of delivering up to 1.5A, 2A output currents. The SY8009 family operate over a wide input voltage range from 3V to 5.5V and integrate main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. Low output voltage ripple and small external inductor and capacitor sizes are achieved with greater than 1MH- switching frequency. Features low Rds(on) for internal switches (top, bottom) SY8009A: 200mohm, 150mohm, 1.5A, SOT23-5 SY8009B:150mohm, 120mohm,2.0A, SSOT23-6 3-5.5V input voltage range High switching frequency minimizes the external components SY8009A: 1.5MH- SY8009B: 1MH- Internal softstart limits the inrush current 100% dropout operation Compact package: SOT23-5 and Super SOT23-6 are pin-compatible..