SY21228AQQC (SY8368AQQC)

High Efficiency Fast Response 8A Continuous, 16A Peak, 28V Input Synchronous Step Down Regulator

SY21228AQQC High Efficiency Fast Response 8A Continuous, 16A Peak, 28V Input Synchronous Step Down Regulator Datasheet

Parameters
Features
Description

Part number	SY21228AQQC
Channel(#)	1
Vin (min) (V)	4
Vin (max) (V)	28
Switching frequency (min)(kHz)	800
Switching frequency (max)(kHz)	800
Vout (min) (V)	0.6
Vout (max) (V)	5
Iout (max) (A)	8
Vout2 (min)(V)
Vout2 (max )(V)
Iout2 (max)(A)
Vref accuracy (±%)	1
Vout accuracy(±%)
Control mode	COT+Ripple
Duty cycle (max)(%)
Operation mode	FCCM/PFM Selectable
Iq (typ) (uA)	100
Features
Package
Operating temperature range(°C)
Functional safety category

· 4.0-28V Wide Input Voltage Range

· Low R_DS(ON) for Internal Switches: 20/10mΩ

· Instant PWM Architecture to Achieve Fast Transient Response

· Internal 600μs Soft-start Limits the Inrush Current

· Pseudo-constant Frequency: 800kHz

· 8A Continuous, 16A Peak Output Current Capability

· ±1% 0.6V Reference Voltage

· Hiccup Mode SCP, OVP

· Thermal Shutdown with Auto Recovery

· RoHS Compliant and Halogen Free

The SY8368A develops a high efficiency synchronous step-down DC/DC regulator capable of delivering 8A continuous, 16A peak current. The SY8368A operates over a wide input voltage range from 4.0V to 28V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.

Evaluation Board

Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board

EVB_SY21228AQQC

EVB File

The EVB_SY21228AQQC is intended for evaluating fast response, 8A continuous, 16A peak current, 28V input synchronous Buck regulator. It features Enable control, output voltage selection inputs.

Technical Documentation

Title	Date
Silergy_Catalog_Q3_2026	2026-11-04