E-CMOS EC3221
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.| Part No. | EC3221 |
|---|---|
| Datasheet | EC3221 Download |
| Manufacturer |  E-CMOS |
| Description | Synchronous Step-Down Regulator |
| Buy | Stock & Price |
GENERAL DESCRIPTION
Low output voltage ripple and small external inductor And capacitor sizes 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 Package Types Figure 1. Package Types of EC3221 E-CMOS Corp. ( Page 1 of 16 3F18N-Rev.P001 1.5MHz, Dual 1.5A, Synchronous Step-Down Regulator Pin Assignments EC3221 Figure 2 Pin Configuration of EC3221 Pin
DESCRIPTION
Pin Number 7,5 Exposed paddle 2,4 1,3 8,6 Pin Name EN1,2 GND LX1,2 IN1,2 FB1,2DESCRIPTION
Enable Pin. EN is a digital input that turns the regulator on or off .Drive EN pin high to turn on the regulator, drive it low to turn it off. Ground Pin.. Power Switch Output Pin. SW is the switch node that supplies power to the output.
