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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：30mA
- 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 HV9923N8-G is a three-pin switch-mode LED lamp driver IC manufactured by Microchip Technology. It utilizes a buck topology to provide constant current regulation for LED loads. The device operates within an input voltage range of 20 V to 400 V and supports an output current configurable from 20 mA to 150 mA using external resistors. It functions at a switching frequency of 170 kHz and includes an integrated MOSFET. The component is available in an SOT-89 surface-mount package and is rated for operation between -40°C and +85°C.
Feature Summary
- Integrates a power MOSFET to minimize external component count
- Configurable constant current output via external resistor
- Operates without requiring a microcontroller
- Supports high-voltage input ranges up to 400 V
Applications
- LED lamp drivers
- General lighting applications
- High-voltage LED string regulation
Procurement Notes
Verify the specific suffix 'N8' confirms the SOT-89 package variant, as other suffixes may indicate different packaging or thermal ratings. Confirm RoHS compliance status through official Microchip documentation prior to integration. Ensure the design accommodates the specified 170 kHz switching frequency and thermal dissipation requirements for the target application environment.
Selection Notes
Select this component when a compact, single-inductor buck solution is required for high-voltage LED strings. It is suitable for designs needing adjustable current settings between 20 mA and 150 mA without complex control logic. Consider the SOT-89 package constraints for thermal management and PCB space compared to through-hole alternatives like the HV9922N3-G.
Part Context
This part belongs to the HV9923 family of 3-pin switch-mode LED drivers. It shares functional similarities with the HV9922 series but differs primarily in package type and pinout configuration. The HV9923N8-G specifically denotes the surface-mount SOT-89 version, distinguishing it from through-hole options while maintaining identical electrical performance characteristics.
Replacement Considerations
The HV9922N8-G is a direct substitute if pin compatibility and package dimensions are verified. Other HV9923 variants may require schematic adjustments due to differing pinouts.
