General description

The EC3221 are high-efficiency 1.5MHz synchronous step-down DC-DC regulator ICs capable of delivering up to 1.5A output currents, respectively.

The EC3221 operates 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 capacitorsizes are achieved with 1.5MHz switching frequency.

Features

● low Rds(on) for internal switches (top/bottom):
● 3-5.5V input voltage range
● 1.5MHz switching frequency minimizes the external components
● Internal softstart limits the inrush current
● 100% dropout operation
● Compact and thermally enhanced package:
● SOP-8(Exposed PAD)

Applications

● LCD TV WiFi
● Card GPS
● Access Point Router
● Set Top Box