KTD2690ERAA-TA

Overview

The KTD2690ERAA-TA is a single-output DC-DC boost LED driver IC designed for camera flash applications. It features a programmable current source delivering up to 1.5A per channel. The device operates with an output voltage range of 2.7V to 5.5V and supports switching frequencies of 2MHz and 4MHz. Control and dimming are managed via an I2C interface. It functions within an operating temperature range of -40°C to 85°C and is housed in an 8-WLCSP package measuring 0.81x1.52mm.

Feature Summary

• Integrates a high-efficiency step-up (boost) DC-DC regulator optimized for driving high-current LEDs.
• Provides precise programmable constant current control for consistent flash brightness.
• Enables digital configuration and dimming through a standard I2C communication interface.

Applications

• Camera flash systems
• Mobile device illumination
• Compact optical lighting modules

Procurement Notes

Verify the specific manufacturer datasheet for the KTD2690ERAA-TA to confirm final electrical characteristics and mechanical drawings. Ensure compatibility with system voltage rails and I2C logic levels before integration. Confirm that the 8-WLCSP footprint matches the PCB layout requirements. Check for any specific handling or reflow profile recommendations provided by Kinetic Technologies for this component type.

Selection Notes

Select this component when a compact, digitally controlled boost driver is required for single-channel LED flashes. It is suitable for space-constrained designs needing up to 1.5A output current. Consider the 2MHz or 4MHz frequency options based on external inductor size constraints. Verify that the I2C address and command set align with the host microcontroller's capabilities.

Part Context

This part belongs to the Kinetic Technologies KTD269x series of LED drivers. It differs from the KTD2691, which is a linear driver, by utilizing a DC-DC boost topology for higher efficiency in flash applications. The EAA suffix typically denotes specific packaging or tape-and-reel configurations within the product line.

Replacement Considerations

The KTD2691ERAA-TA is a related part but uses a linear regulation topology rather than a boost converter. Direct substitution requires verifying if the system can tolerate the thermal dissipation differences and if the voltage headroom requirements match the linear vs. switching architecture.

FAQ

What is the maximum output current capability of the KTD2690ERAA-TA?

The device provides a programmable output current of up to 1.5A per channel.

How is the LED brightness controlled in this IC?

Brightness and timing are controlled digitally via an I2C interface, allowing for precise dimming and flash duration settings.