SY8366HQQC

Product Overview

SY8366HQQC is a Silergy high-efficiency synchronous step-down DC/DC regulator designed for high-current point-of-load power conversion. The device operates from a wide 4V to 28V input range and can deliver 6A continuous output current with up to 12A peak capability. Its integrated low-RDS(ON) power switches, Instant PWM architecture and 800kHz pseudo-constant switching frequency provide fast transient response, high efficiency and reduced external component size for televisions, set-top boxes, notebooks and high-power wireless access equipment.

Key Features

• Manufacturer: Silergy

• Part Number: SY8366HQQC

• Product Family: SY8366H

• Product Type: Synchronous Step-Down DC/DC Regulator

• Converter Topology: Buck

• Number of Outputs: 1

• Input Voltage Range: 4V to 28V

• Continuous Output Current: 6A

• Peak Output Current Capability: 12A

• Switching Architecture: Instant PWM

• Switching Frequency: 800kHz Pseudo-Constant Frequency

• High-Side MOSFET RDS(ON): 40mΩ

• Low-Side MOSFET RDS(ON): 20mΩ

• Internal Power MOSFETs: Integrated

• Reference Voltage: 0.6V

• Reference Accuracy: ±1.5%

• Internal Soft-Start Time: Approximately 600µs

• Peak Current Limit: Programmable

• Power Good Indicator: Integrated

• Output Discharge Function: Integrated

• Short-Circuit Protection: Hiccup Mode

• Input Undervoltage Lockout: Integrated

• Overtemperature Protection: Integrated

• Light-Load Operation: Optimized for High Efficiency

• Typical Quiescent Current: Approximately 100µA

• Operating Temperature Range: -40°C to +150°C

• Package Type: QFN-12 EP

• Package Dimensions: 3 × 3mm

• Pin Count: 12

• Mounting Type: Surface Mount

• Moisture Sensitivity Level: MSL 3

• Environmental Compliance: RoHS Compliant and Halogen Free

Applications

SY8366HQQC is suitable for high-current low-voltage power rails in LCD TVs, network televisions, 3D TVs, set-top boxes, notebook computers, high-power wireless access points and other embedded electronics. Its 28V input capability and 6A continuous output rating make it useful where an intermediate system rail must be efficiently converted to lower processor, memory or peripheral supply voltages.

Design & Selection Considerations

SY8366HQQC uses an Instant PWM architecture to provide fast response to sudden load changes while maintaining high efficiency at light load. Designers should select the feedback network for the required output voltage and verify inductor saturation current against the device's 6A continuous and 12A peak capability. The 800kHz switching frequency allows relatively compact inductors and capacitors, while the integrated 40mΩ high-side and 20mΩ low-side MOSFETs reduce conduction losses. Proper PCB layout around the QFN exposed pad, input bypass capacitors and high-current switching loops is important for thermal performance, noise control and stable regulation.

Quality & Sourcing

Antrex Electronics can support SY8366HQQC sourcing with stock availability checks, RFQ quotation, package confirmation, date code review and shipment arrangement. For project-based purchasing, customers can provide quantity requirements, delivery schedules, input and output voltage requirements and application details for faster quotation support.

For quality assurance, Antrex Electronics can assist with product photos, marking verification, visual inspection and third-party testing services when required. Consumer electronics manufacturers, power-supply designers, industrial equipment companies and electronic component buyers are welcome to submit BOM lists or hard-to-find Silergy power-management IC requirements for sourcing assistance.