HV9803LG-G

Overview

The HV9803LG-G is a single-output LED lighting driver IC from Microchip Technology, housed in an SOIC-8 package. It supports both boost and buck topologies with an adjustable output voltage. The device operates on a supply voltage range of 7 V to 13.2 V and functions at a switching frequency of 100 kHz. It provides average constant current regulation and supports PWM dimming. The component is rated for operation between -40°C and +125°C, with a maximum power dissipation of 650 mW and a maximum supply current of 2.5 mA.

Feature Summary

• Provides average constant current regulation for LED loads
• Supports PWM dimming control interface
• Integrates boost and buck converter topologies

Applications

• LED lighting driver circuits
• General illumination systems requiring constant current sources

Procurement Notes

Verify the specific suffix 'LG' against the official Microchip datasheet to confirm pinout and thermal characteristics. Confirm RoHS compliance status as distributor listings may vary. Ensure the application input voltage remains within the 7 V to 13.2 V range to maintain specified performance. Check for humidity sensitivity handling requirements during assembly.

Selection Notes

Select this component when a low-voltage (under 13.2 V) LED driver is required. It is suitable for designs needing both step-up and step-down capabilities within a single channel. Consider the SOIC-8 package size and thermal dissipation limits of 650 mW for PCB layout planning. Verify compatibility with the system's PWM dimming signal levels.

Part Context

This part belongs to the Microchip HV9803 series of LED drivers. It is distinct from high-voltage variants like the HV9801 or HV9931, which support inputs up to 450 V. The HV9803 is specifically designed for lower voltage applications, differentiating it from the broader family through its restricted input voltage range and specific topology support.

Replacement Considerations

HV9803BLG-G is listed as a related variant within the same product line.