TPS61055YZGT

Overview

The TPS61055YZGT is a DC-DC step-up (boost) regulator designed for LED lighting applications. It features a 2 MHz switching frequency and supports PWM dimming control. The device delivers up to 700 mA output current, with specific configurations supporting 500 mA flash currents. It operates within an input voltage range of 2.5 V to 6 V and is housed in a 12-pin DSBGA package. The component includes load disconnect functionality during shutdown to minimize quiescent current consumption.

Feature Summary

• Integrated 2 MHz fixed-frequency boost converter topology
• Supports PWM dimming for brightness control
• Includes load disconnect feature during shutdown mode

Applications

• White LED backlight drivers
• Portable electronic device illumination
• Flash light circuits

Procurement Notes

Verify the obsolete status of this specific part number before procurement planning. Confirm availability of parametric equivalents or updated series replacements from Texas Instruments. Ensure that any substitute components match the required pinout, thermal characteristics, and electrical specifications for the target application design.

Selection Notes

Select this component for designs requiring high-efficiency boost conversion at 2 MHz to allow for smaller passive components. Consider the 700 mA output capability for driving multiple white LEDs in series. Evaluate the 12-DSBGA package constraints for PCB layout and thermal management requirements in compact portable devices.

Part Context

This part belongs to the TPS6105x family of LED driver ICs from Texas Instruments. These devices are optimized for single-cell lithium-ion battery powered applications. The family provides integrated solutions for constant current regulation and dimming control in space-constrained environments.

Replacement Considerations

TPS61054YZGR is listed as a parametric equivalent substitute. Verify compatibility regarding package type and electrical parameters before substitution.