HV9911NG-G-M901

Overview

The HV9911NG-G-M901 is a switch-mode LED driver IC from Microchip Technology, designed for high current accuracy in lighting applications. It operates as a DC-DC controller supporting SEPIC, buck, and boost topologies with a supply voltage range of 9V to 250V. The device features an adjustable switching frequency of 100kHz or 350kHz and supports PWM dimming. Packaged in a 16-SOIC (0.154 inch width) surface-mount enclosure, it functions without an internal switch and operates within a temperature range of -40°C to 85°C.

Feature Summary

• Supports multiple converter topologies including SEPIC, step-down (buck), and step-up (boost) configurations.
• Enables precise LED current regulation through high current accuracy control mechanisms.
• Provides flexible dimming capabilities via pulse-width modulation (PWM) input.
• Operates across a wide input voltage range suitable for diverse power supply architectures.

Applications

• LED backlighting systems
• Automotive LED lighting circuits
• General solid-state lighting fixtures

Procurement Notes

Verify the specific suffix M901 against the official Microchip datasheet to confirm packaging quantity and tape-and-reel specifications. Ensure compatibility with the required switching frequency setting (100kHz vs 350kHz) by checking external resistor values. Confirm that the 16-SOIC footprint matches the PCB design guidelines provided in the component documentation.

Selection Notes

Select this component when designing non-isolated LED drivers requiring support for both buck and boost operations within a single topology framework. Consider the 16-SOIC package constraints and thermal dissipation requirements for the operating environment. Validate that the external passive components align with the specified 9V to 250V input range and desired switching frequency options.

Part Context

This part belongs to the HV9911 series of switch-mode LED driver integrated circuits manufactured by Microchip Technology. The series is characterized by its ability to drive LEDs with high current accuracy using various DC-DC converter topologies. The HV9911 family is commonly utilized in applications demanding efficient power conversion and precise light output control.

Replacement Considerations

The parameter-equivalent part HV9911NG-G is documented as an available alternative. Verify pinout compatibility and electrical specifications before substitution.

FAQ

Does the HV9911NG-G-M901 include an internal power switch?

No, the HV9911NG-G-M901 does not contain an internal switch; it functions as a controller requiring external switching components.

What dimming method is supported by this IC?

The device supports pulse-width modulation (PWM) dimming for controlling LED brightness.