Starrystone Tech DC-DC Converters

About DC-DC Converters

High-efficiency DC-DC converters including buck, boost, and buck-boost topologies for various voltage conversion applications.

As an authorized distributor of Starrystone Tech, BeiLuo provides a comprehensive range of DC-DC Converters products. These products are widely used in industrial control, automotive electronics, consumer electronics, and communication equipment. We offer a complete product line with multiple series to meet various application requirements. All products are genuine and original, backed by professional technical support and comprehensive after-sales service.

Selection Guide: How to Choose the Right DC-DC Converters

Product List

2 products available

Part Number ↕	Input Voltage ↕	Output Voltage ↕	Max Output Current ↕	Switching Frequency ↕	Efficiency ↕	Package ↕	Stock Status	Action
STR-B3401	4.5V to 18V	0.8V to 16V (adjustable)	3A	500kHz	Up to 95%	SOT23-5	In Stock	View Details
STR-C3501	2.5V to 14V	2.5V to 14V (configurable)	2A	1MHz	Up to 95%	QFN-16 (3x3mm)	In Stock	View Details

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Frequently Asked Questions

What is the difference between buck, boost, and buck-boost converters?

Buck converters step down voltage (output < input) with high efficiency. Boost converters step up voltage (output > input). Buck-boost converters can both step up and step down, making them suitable for applications where input voltage varies above and below the output (like battery-powered systems). Starrystone Tech offers all three types: STR-B series for buck, STR-U series for boost, and STR-C series for buck-boost applications.

Select topology based on input/output voltage relationship. Contact us for topology selection guidance.

What is the efficiency of Starrystone Tech DC-DC converters?

Starrystone Tech DC-DC converters achieve high efficiency, typically 90-95% at moderate to heavy loads. Synchronous rectification eliminates diode losses, improving efficiency especially at low output voltages. Efficiency varies with input voltage, output voltage, and load current. Light-load efficiency is optimized through features like automatic PFM mode switching. Refer to efficiency curves in datasheets for specific operating conditions.

For battery-powered applications, efficiency directly impacts runtime. Review efficiency curves for your operating conditions.

What protection features are included in Starrystone Tech DC-DC converters?

Starrystone Tech DC-DC converters include comprehensive protection features: over-current protection (OCP) prevents damage from excessive load current

over-voltage protection (OVP) safeguards against output voltage faults

under-voltage lockout (UVLO) ensures proper startup

over-temperature protection (OTP) prevents thermal damage

and short-circuit protection (SCP) handles output faults. These protections ensure reliable operation and protect both the IC and connected circuits.

The integrated protections simplify design and improve reliability. Review datasheet for specific protection thresholds.

How do I select the right inductor for DC-DC converters?

Inductor selection affects efficiency, ripple current, and transient response. Choose inductance value based on switching frequency and desired ripple current (typically 20-40% of output current). Higher inductance reduces ripple but may slow transient response. Consider saturation current rating (should exceed maximum load plus ripple) and DCR (affects efficiency). Shielded inductors reduce EMI. Starrystone Tech datasheets provide recommended inductor values and part numbers.

Follow datasheet recommendations for inductor selection. Contact our FAE team for optimization guidance.

What package options are available for Starrystone Tech DC-DC converters?

Starrystone Tech DC-DC converters are available in compact packages suitable for space-constrained applications. Common packages include SOT23-5/6, SOP-8, ESOP-8, and QFN (2x2mm to 4x4mm). The small packages enable high power density designs for portable electronics and compact modules. Thermal performance varies by package, with larger packages offering better heat dissipation. Select package based on space constraints, thermal requirements, and manufacturing considerations.

Choose package based on space and thermal requirements. Review PCB layout guidelines in datasheets.