TPS68401C4YFFR

Overview

The TPS68401C4YFFR is a Texas Instruments LED driver IC featuring three output channels with a switched capacitor (charge pump) topology. It operates as a DC-DC regulator with I2C dimming control, supporting up to 150mA per channel. The device functions within a supply voltage range of 2.7V to 5.5V and includes an internal switch. It utilizes a 20-DSBGA package and operates at a frequency of 1.25MHz across a temperature range of -30°C to 85°C.

Feature Summary

• I2C dimming control interface
• Switched capacitor charge pump topology
• Three independent output channels

Applications

• Backlight systems

Procurement Notes

Verify component status carefully as the TPS68401C4YFFR is listed as obsolete in official distributor records. Confirm availability through authorized channels or approved substitute part numbers such as the LP5521TMX/NOPB. Ensure all procurement activities account for end-of-life management protocols and validate that replacement components meet original electrical specifications and pin compatibility requirements.

Selection Notes

Select this component for applications requiring precise I2C-controlled LED brightness regulation via a charge pump architecture. Consider the 20-DSBGA surface-mount package constraints and the specific current limits of 150mA per channel. Evaluate thermal performance within the -30°C to 85°C operating range and ensure system power supplies remain within the 2.7V to 5.5V input window for stable operation.

Part Context

This device belongs to the Texas Instruments PMIC LED driver family, specifically designed for regulated lighting applications. It integrates a DC-DC regulator with a switched capacitor topology to provide efficient power conversion for LED arrays. The component supports digital control interfaces for dynamic adjustment, fitting into portable electronics and display backlighting solutions where space and efficiency are critical design factors.

Replacement Considerations

The LP5521TMX/NOPB is identified as a similar replacement option from Texas Instruments. Verify functional equivalence regarding output configuration and control interface before substitution.

FAQ

What is the switching frequency of the TPS68401C4YFFR?

The device operates at a switching frequency of 1.25MHz.

Does the TPS68401C4YFFR include internal switching elements?

Yes, the component features an internal switch as part of its switched capacitor topology.