LM2759SDX/NOPB

The LM2759SDX/NOPB is a high-performance, low-noise, step-up (boost) DC-DC converter designed by Texas Instruments. It is particularly well-suited for applications requiring a compact power supply solution, such as portable devices, battery-powered equipment, and LED drivers.

Key Features:

1. Input Voltage Range: The LM2759 operates over a wide input voltage range, typically from 2.5V to 5.5V, making it compatible with various battery types, including lithium-ion and alkaline batteries.

2. Output Voltage: The device can boost the input voltage to a higher output voltage, which can be set to a specific level using external resistors. The output voltage can be adjusted up to 28V, allowing for flexibility in design.

3. Efficiency: The LM2759 is designed for high efficiency, often exceeding 85% under typical operating conditions. This efficiency helps to extend battery life in portable applications.

4. Switching Frequency: The converter operates at a fixed switching frequency, typically around 1.2 MHz, which allows for the use of small external components, such as inductors and capacitors, contributing to a compact design.

5. Low Noise: The device features low output ripple and noise, making it suitable for sensitive applications, such as RF and audio systems.

6. Protection Features: The LM2759 includes several built-in protection features, such as overcurrent protection, thermal shutdown, and under-voltage lockout, ensuring reliable operation and safeguarding the device and connected components.

7. Package Type: The LM2759SDX/NOPB is available in a small, thermally efficient package, typically a 10-pin VQFN (Very Thin Quad Flat No-lead) or similar, which aids in space-constrained designs.

8. Applications: Common applications for the LM2759 include powering LEDs, driving RF amplifiers, and supplying power to microcontrollers and other digital circuits in portable devices.

Electrical Characteristics:

• Quiescent Current: The device has a low quiescent current, which is beneficial for battery-operated applications where minimizing power consumption is critical.
• Load Regulation: The LM2759 provides excellent load regulation, ensuring stable output voltage even with varying load conditions.

Conclusion:

The LM2759SDX/NOPB from Texas Instruments is a versatile and efficient boost converter that meets the demands of modern electronic designs. Its combination of high efficiency, low noise, and compact size makes it an ideal choice for a wide range of applications, particularly in portable and battery-powered devices.