HV9803BLG-G

Overview

The HV9803BLG-G is a linear LED driver IC from Microchip Technology, packaged in an 8-SOIC surface-mount device. It operates as an open-loop average-mode current controller in constant off-time mode. The component supports a supply voltage range of 7V to 16V and delivers a maximum output current of 165mA with a power dissipation limit of 625mW. It features analog and PWM dimming capabilities for backlight and lighting applications.

Feature Summary

• Linear LED driver integrated circuit designed for constant current control
• Supports both analog and PWM dimming methods for brightness adjustment
• Open-loop average-mode current control operating in constant off-time mode

Applications

• LED backlighting systems
• General lighting applications
• Portable electronic displays

Procurement Notes

Verify the specific suffix 'BLG-G' against the official Microchip datasheet to confirm package type and temperature grade. Confirm that the 8-SOIC footprint matches your PCB design requirements. Check for end-of-life status or obsolescence notices on the manufacturer's website before finalizing procurement plans.

Selection Notes

Select this component when a simple linear solution is required for low-power LED driving. Ensure the application voltage stays within the 7V to 16V input range. Consider thermal management carefully due to the 625mW power dissipation limit inherent to linear regulation architectures.

Part Context

This part belongs to the HV9803 family of LED drivers. It is distinct from switching regulators like the MIC2287, offering a simpler topology for specific low-voltage, low-current use cases where efficiency is secondary to cost and complexity reduction.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Microchip Technology directly for cross-reference recommendations or updated product line information.