IW388-20B

Overview

The iW388-20B is a high-performance step-down DC/DC regulator designed for LED lighting applications, supporting input voltages up to 65V. It features high-resolution true DC dimming capabilities and integrates an internal power switch. The device operates within a switching frequency range of 100kHz to 400kHz and provides adjustable output voltage control. It includes comprehensive protection mechanisms such as over-current, over-voltage, and thermal shutdown. The component is housed in a compact package suitable for space-constrained designs.

Feature Summary

• High-resolution true DC dimming functionality for precise LED brightness control
• Integrated high-voltage step-down architecture supporting inputs up to 65V
• Comprehensive protection features including thermal shutdown and current limiting

Applications

• LED lighting systems requiring high-voltage step-down regulation
• Industrial lighting fixtures with dimming requirements
• Commercial illumination applications utilizing DC/DC conversion

Procurement Notes

Verify availability status carefully as the part may be subject to limited supply or factory special orders. Confirm RoHS compliance details through official documentation before procurement. Ensure that the specific ordering suffix matches the required packaging format. Cross-reference the manufacturer number with authorized distributors to avoid counterfeit components. Check for any regional sales restrictions that may apply to your location.

Selection Notes

Select this component when designing LED drivers that require high input voltage tolerance and precise dimming resolution. Consider the 65V maximum input rating for compatibility with higher voltage bus architectures. Evaluate the thermal performance requirements based on the expected load conditions. Ensure the chosen packaging variant aligns with the manufacturing assembly process. Verify that the switching frequency range meets the electromagnetic interference constraints of the target application.

Part Context

The iW388-20B belongs to the iW388 series of power management integrated circuits from Renesas Electronics. This series focuses on providing efficient power solutions for lighting applications. The component falls under the category of switching voltage regulators within the broader PMIC portfolio. It represents a specialized solution for high-voltage LED driving scenarios where efficiency and control precision are critical design parameters.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data.