Overview
The TPS61061DRBR is a synchronous boost converter integrated circuit (IC) designed by Texas Instruments. It features high efficiency and low noise operation, making it ideal for battery-powered applications where power conservation is critical. This device operates across a wide input voltage range, typically from 1.8V to 5.5V, and can deliver output voltages up to 5.5V. Its compact VQFN package (3mm × 3mm) makes it suitable for space-constrained designs in portable electronics.
Structure and Working Principle
The TPS61061DRBR integrates a synchronous rectifier to improve efficiency compared to traditional diode-based boost converters. The IC includes power MOSFETs, control logic, and protection circuits in a single package. When operating, the device uses pulse-width modulation (PWM) to regulate the output voltage. It automatically switches between pulse-frequency modulation (PFM) and PWM modes to optimize efficiency across different load conditions, maintaining high performance while minimizing power consumption.
Key Features
The TPS61061DRBR offers several notable features including high efficiency (up to 95%), low quiescent current (typically 15μA), and a fixed switching frequency of 1.2MHz. These characteristics make it particularly suitable for battery-powered applications. The device also includes built-in protection features such as thermal shutdown, overcurrent protection, and undervoltage lockout. Its small form factor and minimal external component requirements simplify design and reduce board space in compact electronic devices.
Application Areas
This boost converter is commonly used in portable medical devices, handheld instruments, and IoT sensors where efficient power conversion from single-cell or dual-cell batteries is required. Other applications include powering white LEDs in backlight units, boosting voltage for wireless modules, and providing stable power supplies in space-constrained consumer electronics such as smart watches and wireless earbuds.
Maintenance and Precautions
Proper PCB layout is crucial for optimal performance of the TPS61061DRBR. Designers should follow the manufacturer's recommended layout guidelines, particularly for the power traces and grounding scheme. Thermal management should be considered, especially when operating at maximum load. While the device includes thermal shutdown protection, adequate ventilation or thermal vias may be necessary in high ambient temperature environments.
B2B Procurement Guide
When procuring TPS61061DRBR in bulk, buyers should verify the supply chain authenticity due to the prevalence of counterfeit semiconductors. Authorized distributors or direct purchases from Texas Instruments are recommended. Lead times can vary significantly depending on market conditions. For large volume purchases (10,000+ units), buyers may negotiate better pricing, typically in the range of $1.20-$2.00 per unit. Sample quantities are often available for evaluation before committing to large orders.
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