XB61040 Low-Power DC/DC Boost Converter in SOT 23-5 Packages

Product Overview

The XINLUDA XB61040 is a high-efficiency, fixed-frequency boost converter designed for applications requiring compact, reliable, and efficient power conversion. It competes directly with the TPS61040DBVR, a widely used boost converter from Texas Instruments. Both devices are designed for step-up voltage regulation in low-power systems, but XB61040 offers several technical and practical advantages in terms of efficiency, operating voltage range, switch current capability, and cost-effectiveness.

Input Voltage Range

The XB61040 supports an input voltage range of 1.2V to 5.5V, making it suitable for both single-cell and multi-cell battery systems, including Alkaline, NiMH, and Li-Ion chemistries.

In contrast, the TPS61040DBVR supports an input range of 1.8V to 6.0V, which excludes direct use in some single-cell systems without external biasing.

Advantage: XB61040 offers a lower minimum startup voltage (1.2V), making it ideal for energy-harvesting, low-voltage, or partially discharged battery applications.

Switch Current Limit and Output Power Capability

The XB61040 integrates a high-current internal switch with a peak switch current limit of up to 1.2A, allowing higher output currents or support for greater voltage step-up ratios.

The TPS61040DBVR has a maximum switch current limit of 850mA, which can be limiting when higher load currents or larger step-ups are required.

Advantage: XB61040 provides superior output drive capability and improved margin in demanding load conditions, such as powering white LEDs or sensor arrays.

Efficiency and Frequency

The XB61040 operates at a fixed frequency of 600kHz, which allows for a good balance between component size and efficiency. With optimized internal MOSFETs, it delivers high conversion efficiency—typically up to 85–90% depending on the load and voltage conditions.

Similarly, the TPS61040DBVR also operates at 600kHz, and while it is also efficient, the slightly higher internal resistance and lower switch current limit may impact peak efficiency under higher load scenarios.

Advantage: In real-world applications with moderate-to-high load demands, XB61040 can maintain better efficiency due to its higher current handling and optimized internal switch.

Package and PCB Integration

Both the XB61040 and TPS61040DBVR are packaged in a SOT-23-5 form factor, which is compact and widely adopted in space-constrained designs.

However, XB61040 uses a simplified external component network for compensation and stability, which reduces design complexity and board space compared to typical TI reference designs.

Advantage: Simplified external circuitry in XB61040 leads to easier PCB layout and faster design-in process for engineers.

Protection Features and Reliability

Both devices provide essential protection functions including:

• Overcurrent protection

• Thermal shutdown

• Under-voltage lockout

However, the XB61040 integrates enhanced ESD protection (±2kV HBM), which improves its robustness in electrostatically sensitive environments, such as portable or handheld electronics.

Advantage: XB61040 offers increased system reliability under harsh handling or high-ESD conditions.

Cost-Performance Ratio

A major advantage of the XB61040 is its competitive cost-performance ratio. It delivers equal or superior performance in most key areas when compared to TPS61040DBVR, while offering cost savings for high-volume applications.

This makes XB61040 particularly attractive in cost-sensitive consumer electronics, LED driver circuits, IoT devices, and general-purpose DC-DC boost applications.

Advantage: Superior value proposition without compromising on performance or reliability.

Conclusion

In summary, the XINLUDA XB61040 demonstrates clear technical and application-level advantages over the TPS61040DBVR, including:

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

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

• Comparable or better efficiency

• Simplified external circuitry

• Better ESD protection

• More competitive pricing

These advantages make the XB61040 an ideal alternative to the TPS61040DBVR in designs requiring efficient, compact, and cost-effective boost regulation, especially in portable and battery-powered systems.