Product Overview: Texas Instruments TPS61122PWR

The Texas Instruments TPS61122PWR is a high-performance, adjustable, step-up DC-DC converter designed to meet the power management requirements of a wide range of applications. This compact and efficient integrated circuit is housed in a 14-TSSOP (Thin Shrink Small Outline Package) and is part of the TPS6112x family of boost converters that are known for their reliability and versatility.

With an input voltage range of 2.0V to 6.0V, the TPS61122PWR is particularly well-suited for portable devices that are powered by either a single-cell Li-Ion battery or multiple Alkaline/NiMH cells. The device's ability to boost the input voltage up to a maximum output voltage of 28V makes it ideal for driving white LEDs used in backlighting of small to medium-sized LCD panels, and it can also be used for other purposes such as powering OLED displays or providing a bias voltage for TFT panels.

The TPS61122PWR incorporates a fixed-frequency, pulse-width modulation (PWM) control scheme that minimizes ripple and ensures stable operation. The switching frequency of 600 kHz allows for the use of small, low-profile inductors and capacitors, thereby reducing the overall footprint and cost of the power supply solution. Additionally, the device offers a high efficiency of up to 90%, which is critical for battery-powered applications where extending battery life is a priority.

To protect the device and the load, the TPS61122PWR features several built-in protection mechanisms, including over-voltage protection, thermal shutdown, and under-voltage lockout. Furthermore, the device has an integrated soft-start function that limits inrush current during startup, contributing to the longevity of the system.

The TPS61122PWR is easy to implement in a variety of designs due to its minimal external component requirements and the availability of application notes and design tools from Texas Instruments. Its robust feature set and high performance make it an excellent choice for designers looking to create compact, efficient, and reliable power solutions.