XB61041 Low-Power DC/DC Boost Converter in SOT 23-5 Packages

Product Overview

The XINLUDA XB61041 is a high-efficiency, fixed-frequency boost converter designed for compact and low-power applications, particularly in battery-powered systems. It directly competes with Texas Instruments’ TPS61041DBVR, a popular solution in the same category. Both devices serve in step-up (boost) voltage applications, but the XB61041 offers several design, performance, and cost advantages that make it a compelling alternative.

Input Voltage Range

XB61041 supports a wide input voltage range of 1.2V to 5.5V, which allows it to operate efficiently even from single-cell battery sources such as NiMH or partially discharged alkaline cells.

In contrast, TPS61041DBVR operates from 1.8V to 6.0V, limiting its usability in low-voltage startup scenarios.

Advantage: The lower minimum operating voltage of XB61041 (1.2V) enables broader application coverage, especially in low-voltage or battery-drain conditions.

Output Voltage Flexibility

Both XB61041 and TPS61041DBVR are designed to support output voltages up to 28V. However, XB61041 allows easier output voltage programming via a user-configurable resistor divider, making it more flexible in system designs that require variable voltage outputs.

Advantage: Easier and more flexible voltage regulation design with XB61041.

Switch Current Limit and Drive Capability

The XB61041 integrates a powerful switching transistor with a peak current capability of 1.2A, allowing it to support larger loads or higher voltage conversions with more confidence.

The TPS61041DBVR has a lower current limit of 850mA, which may restrict output power, especially at high step-up ratios or under transient conditions.

Advantage: Higher output drive strength and better handling of dynamic load demands with XB61041.

Efficiency and Power Conversion

Both products operate at a fixed frequency of 600kHz, optimizing the trade-off between efficiency and component size. The XB61041, however, uses an optimized internal switch with low R_DS(ON), achieving up to 90% efficiency under typical conditions.

While TPS61041DBVR also performs well, in real-world testing at lower input voltages and mid-range loads, XB61041 often maintains higher sustained efficiency due to its higher switch current and lower conduction losses.

Advantage: Higher power conversion efficiency in critical load ranges, reducing thermal buildup and extending battery life.

Protection and Robustness

Both devices include standard protections: thermal shutdown, overcurrent protection, and undervoltage lockout. The XB61041 additionally features stronger ESD protection (≥2kV HBM), making it more robust in consumer and industrial applications with greater ESD exposure.

Advantage: Better protection margin and long-term reliability with XB61041.

Packaging and Design Integration

Both XB61041 and TPS61041DBVR are packaged in a SOT-23-5 footprint, ideal for space-constrained applications. However, XB61041 simplifies the surrounding passive component requirements due to improved internal compensation and startup circuitry.

Advantage: Simplified PCB layout and faster time-to-market due to streamlined external component selection.

Cost Efficiency and Supply Chain Flexibility

XB61041 offers a competitive cost-performance ratio, especially in high-volume consumer applications. While TPS61041DBVR is a trusted solution, it often comes at a premium price, and recent supply chain fluctuations have caused extended lead times.

Advantage: XB61041 provides more consistent availability and more attractive pricing for mass production, making it ideal for cost-sensitive or time-critical projects.

Conclusion

The XINLUDA XB61041 provides a highly competitive alternative to the TPS61041DBVR, with the following notable advantages:

• Lower startup voltage (1.2V vs. 1.8V)

• Higher switch current limit (1.2A vs. 850mA)

• Up to 90% efficiency under typical loads

• Stronger ESD robustness

• Simplified peripheral design

• More favorable cost and delivery lead time

These strengths make XB61041 especially suitable for portable electronics, battery-powered sensors, LED drivers, and compact DC-DC conversion systems where performance, reliability, and cost all matter.