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TI TPS62260DRVR 2.25MHz 600mA Synchronous Step Down Converter

Shenzhen Mingjiada Electronics Co., Ltd., as a professional electronic component supplier, has been supplying the TI TPS62260DRVR synchronous buck converter for an extended period. The TPS62260DRVR, with its high efficiency, compact size, and wide input voltage range, is an ideal choice for power management in portable electronic devices.

TPS62260DRVR Product Overview and Core Features

The TPS62260DRVR is a high-efficiency synchronous buck DC/DC converter specifically designed for portable electronic devices, particularly suited for single-cell lithium-ion battery-powered applications. The TPS62260DRVR device incorporates advanced power management technology, integrating high-performance power switches and controllers into a 2mm × 2mm × 0.8mm WSON-6 package, achieving a solution height of less than 1mm, providing significant convenience for space-constrained applications.

The core operating parameters of the TPS62260DRVR converter include: a wide input voltage range from 2V to 6V, an adjustable output voltage range from 600mV to 6V, and a maximum output current of 600mA. Its fixed switching frequency of 2.25MHz not only effectively reduces the size of external inductors and capacitors but also automatically enters power-saving mode under light load conditions, thereby maintaining high efficiency across the entire load range. Typical application scenarios for the TPS62260DRVR include smartphones, portable media players, low-power DSP power supplies, and various point-of-load (POL) applications.

The TPS62260DRVR has a static current of just 15μA (typical), which can drop below 1μA in shutdown mode, significantly extending the standby time of battery-powered devices. The TPS62260DRVR device also supports a 100% duty cycle operating mode, achieving the lowest voltage drop when the input voltage is close to the output voltage, ensuring stable system operation even as battery voltage decreases. Output voltage accuracy in PWM mode reaches ±1.5%, providing stable and reliable power for sensitive electronic components.

TPS62260DRVR Specifications

Output Voltage:    600 mV to 6 V

Output Current:    600 mA

Number of Outputs:    1 output

Input Voltage - Minimum:    2 V

Input Voltage - Maximum:    6 V

Quiescent Current:    266 uA

Switching Frequency:    2.25 MHz

Minimum Operating Temperature:    -40 °C

Maximum Operating Temperature:    +85 °C

TPS62260DRVR Technical Advantages and Innovative Design

The TPS62260DRVR demonstrates multiple technical innovations and design advantages in power management, setting it apart from competing products. The device adopts a synchronous rectification architecture, achieving significant efficiency improvements compared to traditional asynchronous buck converters, particularly under medium to high load conditions, where efficiency can exceed 95%. This high efficiency directly translates to reduced heat generation and extended battery life, which is particularly important for space-constrained and temperature-sensitive portable devices.

Flexibility in operating modes is another key feature of the TPS62260DRVR converter. In addition to the default automatic PFM/PWM mode switching, the device can be forced into a fixed-frequency PWM mode by pulling the MODE pin high. While this mode sacrifices light-load efficiency, it significantly reduces output voltage ripple, making it ideal for applications sensitive to power supply noise, such as RF circuits and precision analogue circuits. This design enables a single device to accommodate diverse application requirements, reducing the complexity of component selection for designers.

In terms of packaging technology, the TPS62260DRVR offers two packaging options: WSON-6 and SOT-23. The WSON-6 package measures just 2mm × 2mm × 0.8mm, and combined with its high-frequency operating characteristics, it allows the use of 0402 or smaller inductors and capacitors, keeping the overall solution's board area within 10mm². This miniaturised design perfectly aligns with the current trend towards lighter, thinner, shorter, and smaller consumer electronics.

In terms of reliability design, the TPS62260DRVR device operates within a temperature range of -40°C to +85°C, making it suitable for applications in various harsh environments. Built-in over-temperature protection, overcurrent protection, and under-voltage lockout (UVLO) functions effectively prevent abnormal operating conditions from causing damage to the device and system. TI's mature semiconductor manufacturing processes and quality control systems ensure consistency and long-term reliability during mass production.

TPS62260DRVR Application Scenarios and Solutions

The TPS62260DRVR, with its excellent performance parameters and flexible design characteristics, has found widespread application in various electronic devices. In smartphones and tablets, the device is commonly used to power baseband processors, memory, camera modules, and other peripheral circuits. Its high efficiency and compact size make it particularly suitable for space-constrained mobile devices, while the 2.25MHz switching frequency avoids the RF bands commonly used in mobile phones, reducing electromagnetic interference (EMI) issues.

In the field of portable medical devices, such as blood glucose meters, digital thermometers, and portable monitors, the TPS62260DRVR's low static current and wide input voltage range make it an ideal choice. These devices are typically powered by single or dual alkaline batteries, whose voltage gradually decreases with use. The converter provides a stable output voltage throughout the battery's lifespan, ensuring measurement accuracy is not affected by power fluctuations. Its power-saving mode also significantly extends the battery life of such intermittently operated devices.

IoT devices are another important application area. Various sensor nodes, smart tags, and wearable devices often need to remain in low-power standby mode for extended periods, occasionally waking up to collect and transmit data. The TPS62260DRVR's extremely low static current and fast transient response characteristics meet power requirements during sudden load spikes while minimising power consumption during idle periods. Its compact size also makes it suitable for integration into IoT modules with extremely limited space.

In industrial electronics applications, such as handheld test instruments, data acquisition devices, and portable barcode scanners, the TPS62260DRVR demonstrates excellent performance in terms of wide temperature range (-40°C to +85°C) and interference resistance. These devices often operate in harsh environments and require high stability and reliability from the power supply. The device can also be easily combined with other TI power management ICs to build a complete power tree solution, meeting the multi-voltage rail requirements of complex systems.