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