SCT2650STER

Voltage Regulators - DC DC Switching Regulators Overview

The SCT2650STER is a non-synchronous 5A step-down DC-DC converter manufactured by Silicon Content Technology (SCT). It supports an input voltage range of 4.5V to 60V and delivers up to 5A continuous output current. The device features a programmable switching frequency from 100kHz to 1.2MHz, allowing optimization for efficiency or component size. Key electrical parameters include a 0.8V ±1% feedback reference voltage, integrated 80mΩ high-side MOSFET, and low quiescent current of 175μA. It operates within a junction temperature range of -40°C to +150°C and utilizes an ESOP-8 surface-mount package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-side MOSFET with low on-resistance to minimize conduction losses and simplify layout.
• Supports Pulse Skipping Mode (PSM) to maintain high conversion efficiency under light load conditions.
• Features adjustable switching frequency and external clock synchronization for flexible system design.
• Includes comprehensive protection mechanisms such as cycle-by-cycle current limit, thermal shutdown, and over-voltage protection.

Voltage Regulators - DC DC Switching Regulators Applications

• 12-V, 24-V, and 48-V industrial power systems
• Telecommunications infrastructure power supplies
• Industrial automation and motor control circuits
• Vehicle accessory power management

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific datasheet revision when sourcing, as parameter ranges like maximum frequency may vary between versions. Confirm that the ESOP-8 package matches your PCB footprint requirements. Ensure the application circuit accounts for the non-synchronous topology, which differs from synchronous alternatives. Cross-reference the pinout with the target replacement part if performing a direct substitution to avoid wiring errors during assembly.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring wide input voltage tolerance up to 60V with high current capability. It is suitable for applications where minimizing external component count is critical due to the integrated power switch. Consider the PSM mode benefits for battery-operated devices needing extended standby life. Evaluate the thermal performance in enclosed spaces given the high current rating and non-synchronous architecture.

Voltage Regulators - DC DC Switching Regulators Part Context

The SCT2650STER belongs to the SCT2650 series of high-efficiency buck converters designed for robust industrial and telecom environments. It serves as a direct pin-to-pin compatible alternative to certain Texas Instruments parts, facilitating easier supply chain diversification. The series emphasizes reliability through integrated protections and flexible frequency options, catering to diverse power density requirements.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly documented equivalent: TPS54560. Both share identical pinouts and similar electrical specifications, enabling direct PCB replacement without schematic changes.

Voltage Regulators - DC DC Switching Regulators FAQ

Is the SCT2650STER a synchronous rectifier?

No, the SCT2650STER is a non-synchronous buck converter that uses an internal high-side MOSFET and an external diode for the low-side path.

What is the minimum operating input voltage?

The device supports an input voltage range starting from 4.5V up to 60V.

Can the switching frequency be synchronized externally?

Yes, the converter supports external clock synchronization within its adjustable frequency range.