SY20122E -

Features

·       Low RDS(ON) for Internal Switches

   (top/bottom):110mΩ/80mΩ

·       2.7-5.5V Input Voltage Range

·       2AContinuous  Load Current Capability

·       1MHz Switching Frequency Minimizes the External Components

·       Internal Soft-start Limits the Inrush Current

·       Forced PWM Operation

·       Reliable Hic-cup Short Circuit Protection:

·       Reliable Non-latch off Over-voltage Protection:

·       100% Dropout Operation

·       RoHS Compliant and Halogen Free

·       Compact Package: SOT23-6

Typical Application

Description

The SY20122E is a high-efficiency, high frequency synchronous step-down DC-DC regulator IC capable of delivering up to2Aoutput current. The SY20122E   operates over a wide input voltage range from 2.7V 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 1MHz switching frequency.


SY20122E integrates short circuit and over-voltage protection.

Applications

·       LCD TV

·       Set Top Box

·       Net PC

·       Mini-Notebook PC

·       Access Point Router