TPS68402A0RHFR

Overview

The TPS68402A0RHFR is a regulated LED driver IC manufactured by Texas Instruments. It integrates three output DC-DC regulators utilizing switched capacitor (charge pump) topology with internal switches. The device supports I²C dimming control and operates within an input voltage range of 2.7V. It provides a maximum output current of 150mA per channel. The component is housed in an 8-SOIC package with a width of 3.90mm and functions as a surface-mount device designed for backlight applications.

Feature Summary

• Integrates three independent DC-DC regulator outputs using switched capacitor charge pump topology
• Supports digital brightness control via I²C interface
• Includes internal power switches to minimize external component count

Applications

• LED backlighting systems
• Portable electronic displays
• Mobile device illumination circuits

Procurement Notes

Verify the obsolete part status before procurement planning, as availability may be limited or restricted to specific distributors. Confirm the 8-SOIC package dimensions and pinout compatibility with existing PCB footprints. Ensure I²C address configuration matches system requirements. Check RoHS compliance and lead content specifications against environmental regulations. Validate operating temperature ranges for the intended application environment.

Selection Notes

Select this component when a compact solution for multi-channel LED driving is required without external inductors. The charge pump topology offers efficiency benefits in space-constrained designs. Consider the I²C interface for precise digital control over brightness levels. Evaluate the 150mA output capability against specific LED string requirements. Assess the 2.7V minimum input voltage suitability for battery-powered systems.

Part Context

This part belongs to Texas Instruments' portfolio of power management integrated circuits, specifically within the LED driver category. It is designed to replace discrete solutions for backlighting, offering integration of regulation and control functions. The TPS68402 series typically targets mobile and portable electronics where board space and power efficiency are critical design constraints.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, alternative sourcing should focus on authorized distributors holding remaining stock or verified equivalent components from other manufacturers with matching electrical characteristics and package types.