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Product Detailed Parameters
- Description：IC LED DRVR OFFL TRIAC SOT89-3
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：AC DC Offline Switcher
- Topology：Step-Down (Buck)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：20V
- Voltage - Supply (Max)：400V
- Voltage - Output：-
- Current - Output / Channel：50mA
- Frequency：-
- Dimming：Triac
- Applications：Lighting
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-243AA
- Supplier Device Package：SOT-89-3
- Grade：-
- Qualification：-
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Overview
The HV9922N8-G is a switch-mode LED lamp driver IC manufactured by Microchip Technology. It operates as a buck converter with a single output channel capable of delivering up to 50 mA. The device supports an input voltage range from 20 V to 400 V and functions at a switching frequency of 170 kHz. It is housed in a SOT-89 (TO-243AA) surface-mount package with three leads. The component is rated for an operating temperature range of -40°C to +85°C and features constant current regulation.
Feature Summary
- Provides constant current regulation for LED loads
- Supports triac dimming functionality
- Integrates a buck topology for efficient step-down conversion
Applications
- LED lighting drivers
- AC/DC offline switcher circuits
- Step-down LED lamp applications
Procurement Notes
Verify the specific suffix 'N8' corresponds to the SOT-89 package and tape-and-reel packaging configuration. Confirm that the triac dimming capability aligns with the target application requirements. Ensure the input voltage range of 20 V to 400 V matches the system design constraints. Check for any recent product change notifications regarding manufacturing origin or specifications.
Selection Notes
Select this component for designs requiring a single-channel, high-voltage input LED driver with integrated triac dimming. The SOT-89 package suits space-constrained surface-mount applications. Consider the 170 kHz switching frequency when designing external passive components. Verify thermal management capabilities given the 1.6 W power dissipation rating in the specified package.
Part Context
This part belongs to Microchip's HV9922 series of switch-mode LED lamp drivers. The series includes variants with different packages such as TO-92-3 and SOIC-8. The N8 suffix specifically denotes the SOT-89 surface-mount package option within this family of constant current controllers designed for general illumination.
Replacement Considerations
Cross-reference with other HV9922 variants like HV9922N3-G for through-hole options or HV9925SG-G for PWM dimming if triac compatibility is not required. Verify pinout and electrical parameters before substitution.
