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Product Detailed Parameters
- Description：IC LED DRIVER OFFL PWM 8SOIC
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Type：AC DC Offline Switcher
- Topology：Flyback
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：80VAC
- Voltage - Supply (Max)：264VAC
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：100kHz
- Dimming：PWM
- Applications：-
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The HV9971LG-G is an offline constant current LED driver IC from Microchip Technology, designed for isolated flyback topologies. It supports AC input voltages ranging from 80 VAC to 264 VAC and operates at a fixed switching frequency of 100 kHz. The device is housed in an 8-lead SOIC narrow package and functions within a temperature range of -40°C to +125°C. It provides galvanic isolation to meet UL compliance requirements for solid-state lighting fixtures.
Feature Summary
- Enables solid-state lighting fixtures to achieve UL compliance through integrated galvanic isolation
- Provides constant current regulation for single-output LED applications
- Supports PWM dimming control capabilities
Applications
- Isolated solid-state lighting fixtures
- Offline LED driver circuits requiring UL compliance
- Flyback topology LED power supplies
Procurement Notes
Verify component authenticity and datasheet revisions before integration. Confirm that the obsolete status does not impact long-term supply chain stability for your specific production timeline. Ensure design compatibility with the specified 80V to 264VAC input range and 100kHz switching frequency constraints.
Selection Notes
Select this component when designing isolated LED drivers that must satisfy UL safety standards for galvanic isolation. It is suitable for applications requiring a fixed 100kHz switching frequency and operation across a wide industrial temperature range. Consider the SOIC-8 package constraints and power dissipation limits during thermal management planning.
Part Context
This part belongs to the HV9972/HV9971 family of high-voltage LED drivers from Microchip Technology. These devices are engineered specifically for offline AC-DC conversion in lighting applications, offering a compact solution for integrating constant current regulation with necessary safety isolation in a small surface-mount package.
Replacement Considerations
The product status is listed as Obsolete. Verify official Microchip documentation for any recommended replacement parts or end-of-life notices prior to finalizing designs.
