HV9961NG-G

Overview

The HV9961NG-G is a single-output DC-DC controller IC designed for LED lighting applications, manufactured by Microchip Technology. It operates in constant off-time average current mode to provide high-precision LED current regulation without peak-to-average error. The device supports buck topology and accepts supply voltages from 8V to 450V. It features analog and PWM dimming capabilities and functions within an operating temperature range of -40°C to 125°C. The component is housed in a 16-SOIC surface-mount package.

Feature Summary

• Implements average-mode constant current control in constant off-time mode to eliminate peak-to-average error and improve regulation accuracy.
• Supports both analog and PWM dimming methods for flexible brightness control.
• Operates with a wide input voltage range up to 450V, suitable for various power supply configurations.
• Functions as a buck converter controller without requiring loop compensation or high-side current sensing.

Applications

• LED backlighting systems
• General LED illumination
• Signage displays

Procurement Notes

Verify the specific ordering suffix when purchasing. The base part number HV9961NG-G typically uses tube packaging, while variants like HV9961NG-G-M901 utilize tape and reel. Confirm the required packaging format matches your assembly line equipment before placing orders to ensure compatibility with automated pick-and-place processes.

Selection Notes

Select this component for designs requiring precise average current control without complex compensation networks. It is suitable for buck topologies where input voltages may reach up to 450V. Ensure the application requires a single-channel output and compatible dimming signals. Verify that the 16-SOIC package dimensions fit the PCB layout constraints.

Part Context

This part belongs to the HV9961 family of LED driver controllers from Microchip Technology. It serves as an advanced alternative to previous models like the HV9910B, offering improved accuracy by avoiding peak-to-average errors. The family focuses on simplifying design through reduced external component counts and enhanced regulation performance.

Replacement Considerations

HV9910BNG-G is listed as a parameter-equivalent substitute. Verify functional compatibility regarding control mode and pinout before substitution.