ZXLD1937ET5TA

Overview

The ZXLD1937ET5TA is a step-up (boost) DC-DC regulator designed for LED lighting applications. It features an internal switch capable of delivering up to 50mA output current. The device supports both analog and PWM dimming control methods. It operates within a supply voltage range typical for single-cell battery applications, stepping up to drive LEDs with a maximum output voltage of 20V. The component is housed in a TSOT-23-5 package.

Feature Summary

• Integrates a boost converter with an internal power switch for compact design
• Supports dual dimming modes including analog and pulse-width modulation
• Optimized for low-power LED driving applications

Applications

• Battery-powered portable LED lighting
• Flashlight driver circuits
• Indicator light modules

Procurement Notes

Verify the specific suffix ET5TA against the manufacturer's latest documentation to confirm packaging and tape-and-reel specifications. Confirm that the component status remains active or obsolete as indicated by distributor listings, as availability may vary. Ensure compatibility with the intended PCB footprint for the TSOT-23-5 package during integration.

Selection Notes

Select this component for applications requiring a simple, low-current boost solution for white LEDs. It is suitable where space is constrained due to the small TSOT-23-5 package. Consider the 50mA current limit when determining the number of series LEDs. Verify input voltage ranges match the power source, typically a single lithium cell.

Part Context

This part belongs to the ZXLD series of LED drivers from Diodes Incorporated. These devices are engineered for high efficiency and minimal external component counts. The series targets cost-sensitive consumer electronics and portable devices requiring reliable LED illumination without complex control circuitry.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided data. Consult official cross-reference lists for compatible alternatives.