SP7121EK-L

Overview

The SP7121EK-L is a dual-channel LED driver IC manufactured by MaxLinear, housed in a SOT-23-6 package. It supports an input voltage range of 2.7 V to 5.5 V with a maximum power dissipation of 600 mW. The device provides two linear outputs capable of delivering up to 25 mA each. It integrates both linear and PWM dimming capabilities for precise brightness control.

Feature Summary

• Dual-channel output configuration for independent LED control
• Supports both linear analog and PWM dimming methods
• Compact surface-mount packaging suitable for space-constrained designs

Applications

• Backlight illumination for portable electronic devices
• Indicator lighting in consumer electronics
• General-purpose LED status signaling

Procurement Notes

Verify the manufacturer designation, as this component was originally part of the Exar portfolio before acquisition by MaxLinear. Confirm that the specific suffix matches the required pinout and thermal characteristics. Ensure compatibility with the target system's voltage levels and dimming signal requirements before finalizing procurement.

Selection Notes

Select this component when a compact solution for driving two low-current LEDs is required. It is suitable for applications needing simultaneous linear and PWM dimming control. Consider the 600 mW power dissipation limit relative to ambient temperature and PCB copper area for adequate thermal management during operation.

Part Context

This device belongs to the family of dedicated LED drivers designed for portable applications. It bridges functionality between simple discrete transistor solutions and complex multi-channel controllers, offering a balance of performance and simplicity for standard lighting tasks.

Replacement Considerations

Check for direct equivalents such as the SP7121EK-F/TR or SP7121EK-L/TR variants. Verify pin-to-pin compatibility and electrical parameter alignment before substituting.