ZXLD1322DCCTC

Overview

The ZXLD1322DCCTC is a DC-DC converter IC designed for driving single or multiple LEDs in series, featuring an internal switch and supporting up to 700mA output current. It utilizes Buck-Boost topology with a typical switching frequency of 600kHz. The device operates within a supply voltage range of 2.5V to 15V and delivers a maximum output voltage of 18V. It supports PWM dimming and functions across a temperature range of -40°C to 125°C. The component is housed in a 14-UFDFN (DFN4030-14) package with exposed pad.

Feature Summary

• Integrates an internal power switch for compact LED driver designs
• Supports both Buck and Boost topologies for flexible input-output voltage configurations
• Enables precise brightness control through PWM dimming capability

Applications

• LED backlighting systems
• General LED lighting applications

Procurement Notes

Verify the specific ordering suffix matches the required tape-and-reel configuration. Confirm that the DFN4030-14 footprint aligns with PCB layout requirements. Ensure thermal management strategies account for the exposed pad design. Check for AEC-Q100 qualification if automotive reliability standards are mandatory for the target application environment.

Selection Notes

Choose this component when a Buck-Boost regulator is necessary to maintain constant current despite varying LED forward voltages or input sources. The 700mA limit suits medium-power LED strings. Consider the 600kHz frequency for balancing efficiency and passive component size. Verify that the 18V output ceiling accommodates the total series LED voltage drop under all operating conditions.

Part Context

This part belongs to the ZXLD1322 family from Diodes Incorporated, specialized for high-efficiency LED driving. It addresses the need for robust, space-saving solutions in portable and fixed lighting. The DFN package offers thermal performance advantages over traditional plastic packages, supporting higher power densities in constrained board areas.

Replacement Considerations

Direct pin-to-pin replacements may not exist due to unique topology combinations. Evaluate alternatives based on matching 700mA current rating, Buck-Boost functionality, and 14-DFN package dimensions. Cross-reference electrical specifications such as switching frequency and dimming interface compatibility before substitution.