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Product Detailed Parameters
- Description：IC LED DRV OFFL TRIAC TO92-3
- Series：-
- Mfr：Microchip Technology
- Package：Bag
- 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：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA)
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The HV9923N3-G is a pulse-width modulated (PWM), high-efficiency LED driver control IC from Microchip Technology. It operates as a standalone switch-mode buck converter, supporting input voltages from 20 V to 400 V. The device provides a constant output current of 30 mA with an adjustable voltage range. Operating at a fixed frequency of 170 kHz, it features triac dimming capability and open LED protection. Packaged in a TO-92-3 through-hole case, it functions within a temperature range of -40°C to +85°C.
Feature Summary
- Integrated PWM control for efficient LED string operation from high-voltage sources
- Supports triac dimming functionality for compatibility with standard lighting controls
- Includes built-in open LED protection to enhance system reliability
Applications
- LED lamp drivers requiring high-voltage input
- Triac-dimmable LED lighting fixtures
- Buck topology LED power supplies
Procurement Notes
Verify the specific suffix 'N3' against the official Microchip datasheet to confirm package type and temperature grade. Ensure the application circuit supports the 20 V to 400 V input range and 30 mA output current. Confirm that the TO-92-3 through-hole package aligns with the PCB design requirements. Check for RoHS compliance documentation if required by regional regulations.
Selection Notes
Select this component when a simple, cost-effective solution for high-voltage LED driving is needed. It is suitable for applications where triac dimming is required without complex external circuitry. Consider the 30 mA current limit and TO-92 thermal constraints. It is ideal for replacing older linear or less efficient switching drivers in retrofit lighting designs.
Part Context
This part belongs to the HV9923 family of switch-mode LED lamp driver ICs. These devices are designed specifically for AC/DC offline applications, allowing direct connection to rectified mains voltages. The family emphasizes simplicity and efficiency in compact packages, targeting general illumination markets.
Replacement Considerations
Check Microchip's official substitution guide for equivalent parts. Verify pinout compatibility and electrical specifications such as input voltage range and output current before substituting.
