General Description

The SY8286A develops a high efficiency synchronous

step-down DC/DC regulator capable of delivering 6A

current. The device integrates main switch and

synchronous switch with very low RDS(ON) to minimize

the conduction loss.

The SY8286A operates over a wide input voltage range

from 4V to 23V. The DC/DC regulator adopts the

instant PWM architecture to achieve fast transient

responses for high step down applications and high

efficiency at light loads. The device provides various

protection features for reliable operation. In addition, it

operates at pseudo-constant frequency of 600kHz to

minimize the size of inductor and capacitor.

Features

Low RDS(ON) for Internal Switches (Top/Bottom):

38/19 mΩ

Wide Input Voltage Range: 4-23V

Instant PWM Architecture to Achieve Fast

Transient Responses

Internal 1.3ms Soft-start Limits the Inrush Current

Pseudo-constant Frequency: 600kHz

6A Output Current Capability

±1% Internal Reference Voltage

PFM/PWM Selectable Light Load Operation Mode

Optional Bypass Input

Power Good Indicator

Output Discharge Function

Output Current Limit Protection

Hiccup Mode Output Short Circuit Protection

Output Over Voltage Protection

Input UVLO

Over Temperature Protection with Auto Recovery

RoHS Compliant and Halogen Free

Compact Package: QFN3×3-20

Applications

LCD-TV/Net-TV/3DTV

Set Top Box

Notebook

High Power AP